# Aspden on Light: Source Texts

**What Harold Aspden wrote about how light travels through his aether, why its two frames counter-move at c/2, the dual displacement, gyroscopic effects, space domains and screening, quoted from all 719 texts on aetherscience.org**

By Doug Westmoreland (project lead: direction and review) and Claude, Anthropic (research and analysis) · Version 1.0, 2 November 2026 (draft 0.1, published as written) · Source material for *Aspden's Aether from the Bottom Up, Part 1B: How Light Travels in Aspden's Aether*. The quotations are Aspden's; the "Reading" paragraphs and the summaries in sections 0, 7, 8 and 9 are ours. Each source is given with the identifier of its page on this site, so that every passage can be read in its full context.

**Method.** Text searches over all 719 texts (books, papers, OCR PDFs, lectures, tutorials, essays, notes, feedback). Search terms: dual displacement, dispersion and its variants, pair creation, natural, resonant or tuned frequency, displacement current, refractive index, dielectric, wave propagation, transverse and lateral, E-, G-, I- and C-frame, c/2 and its OCR variants (½c, 3c, 4c, $c), countermotion and counterflow, dynamic balance, jitter, synchronism, phase-lock, gyro, vacuum spin, angular momentum, space domain, planar boundary, plasma, screening and cancellation, transparency, curl, wave equation. Every passage quoted below was read in its full surrounding context, not as a snippet.

**Conventions.**
- Each source is cited as **[short name, date]** with its `id`, title and url.
- `[...]` marks an omission.
- `[sic]` and `[= ...]` give OCR corrections. The OCR garbling is kept in the quotation and the correction is given in brackets.
- In the OCR'd book chapters (PWE, PU, POC, MAS) and the PDF papers, mis-read Greek letters and operators have been restored without comment where the reading is unambiguous: σ for "a", "o" or "¢"; φ for "g" or "@"; Ω for "Q" or "2"; π for "n"; ½ for "3" or "4" before c; ∇² for "4" or "A". Printed equation numbers are kept exactly.
- Dates are those of first writing or publication as the text states them. Web pages often reproduce older work with later notes, and both dates are given.

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## 0. Headline findings

1. **The "dual displacement" is not the c/2 counter-motion of the quon lattice and the continuum.** In every place Aspden names the second, counter-displacing system, it is the muon sea (the I-frame), sometimes "virtual muons as well as gravitons". It is never the σ continuum orbiting at c/2. This holds in the commentary on 1982a, in TU18 (1999) and in POC ch. 9 (2003). The 1982 text itself says only "secondary structure".
2. **Aspden's own reason for building in the c/2 counter-motion is dynamic and inertial balance (centrifugal and momentum), not wave propagation.** Two texts tie the relative speed c to the medium. PWE 1969 says it explains why the continuum can stay uniformly spread: its magnetic self-interaction at speed c "exactly cancels its mutual electrostatic action". TG 1960 says "the disturbance is propagated relative to the aether particle system or the continuum". No text argues that the c/2 orbit makes the vacuum transparent.
3. **Every explicit statement on what carries light names the quon lattice (the E-frame).** These are PWE 1969 ch. 4 and ch. 6, PU 1980 ch. 3 and ch. 5, RN9804 (1998) and POC 2003 ch. 9. PWE 1969 explicitly rules out the continuum: "the G frame moved in a fixed orbit [...] Wave disturbance, therefore, no doubt involves displacement of the particle lattice."
4. **The only equations Aspden gives for light in the vacuum** are these:
   - (i) Lorentz electron theory applied to the lattice, with a **separate spring** k = 4πσe (PWE 1969, eqs. 6.23–6.34; POC 2003 eq. 6.7 points back to it). This is Part 1A's "resonance picture", and its natural frequency is p₀ = Ω/√2, not Ω.
   - (ii) The 1984 E₁/E₂ codification, eqs. (3)–(6). These are kinematic bookkeeping, not equations of motion.
   - (iii) A Fresnel-drag set, PU 1980 eqs. 59–63 and POC 2003 eqs. 9.15–9.20.
   - (iv) Symmetrised Maxwell equations with a factor j (1986/87; TU12 1999).

   None gives the equations of motion of a second structure that would cancel the lattice's plasma response.
5. **Aspden himself calls the aether "a cold neutral ionized plasma", a one-component plasma (1998).** He also says outright that the lattice displacement cancels the field of an intruding charge: "the electric field of the charge e has [...] been cancelled by displacement of this electrical medium" (PU 1980); "charge displacement in the aether cancels that electric field but does not cancel the magnetic field!" (ESR8, 1996). He never computes a plasma cutoff, and nowhere explains why a distant test charge still feels Coulomb's law.
6. **Two mechanisms may matter for modelling.** He relies on both, but never puts either into a wave equation.
   - (a) A **synchronising "phase-lock" constraint** imposed by the surrounding aether on every quon orbit. It is a collective, non-Coulomb constraint. It supplies the energy of translational lattice displacement, turns translation into a **lateral** orbit shift, and turns a radial E into "vacuum spin". This has a gyroscopic character.
   - (b) **Planar domain boundaries**, which he says are *required* to obtain the restoring force 4πσq at all; a spherically bounded lattice gives one third (1983k). This matches Part 1A §4.1 and §4.4.

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## 1. Dual displacement and dispersion

### 1.1 The Wireless World article (October 1982), reproduced in Lecture 24 (1998)

**[Lecture 24 / Wireless World 88, 37–39, 1982; web 1998]** `www-energyscience-org-uk-le-le24` | LECTURE NO. 24, "The Ether – An Assessment" | https://aetherscience.org/www-energyscience-org-uk-le-le24/

On the natural frequency (the formula itself is missing from the web text):
> "From the optical characteristics of ionic crystals it is known that there is dispersion, significant at frequencies in the vicinity of the natural resonant frequency of the crystal. One should than bear in mind that energy quanta of sufficient strength can induce the creation of electron-positron pairs in the vacuum. This suggests that the ether sets a critical frequency threshold (the Compton electron frequency) and so may have an electrical structure conforming with this resonant frequency. Thus, in proposing a kind of crystal structure for the vacuum medium and establishing, as I have [7], that it has a natural frequency given by: [formula not reproduced] one is led directly into the question of frequency dispersion."

On light speed and charge density:
> "Lorentz has shown that, according to classical electron theory, the speed of light in matter depends upon electron density and the oscillation period of such electrons in such material media. Electron density does not depend upon rotation, nor is it a vector. therefore, the speed of light (as opposed to its direction) should be unaffected by rotation."

The dual-displacement passage itself:
> "For translational motion with the Earth, the vacuum structure acquires a linear displacement. Clearly, any displacement of electric charge in the vacuum must be transitory and oscillatory, unless it is balanced by a matching counterflow or reverse displacement of some of the charge present. Otherwise there would be a steady build-up of charge and an ever-increasing electric field. One may, therefore, visualize the vacuum as having two charge structures capable of moving through one another in opposite directions. This is quite possible because there are no rigid bonds between the chargers, just electric field interactions. It is this dual structure for charge displacement that is the key. The primary structure moves forward with the Earth. The secondary structure moves through the primary structure in the reverse direction and, by analogy with an optical effect named after Fresnel, we expect this reverse flow to affect the speed of light through the primary structure. [...] The Michelson-Morley experiment verifies that Maxwell's electric displacement theory can be a dual and reciprocal phenomenon. Oscillations of the electrical structure of the vacuum can occur at the resonant Compton electron frequency with no reverse motion of the secondary structure or counter-displacement. However, we may expect light propagation at lower frequencies to involve counter-displacement and it is this that brings a new and important dimension to Maxwell's theory. With it comes a solution to the dispersion problem. Note that the frequency of an electromagnetic wave has no meaning at a point in space and time. [...] However, given dual displacement at a point in space, as we now have in the theory just presented, the frequency can be codified by the relative strengths of the two displacement parameters. The frequency of the signal is, in fact, preserved in transit through the vacuum medium, because the medium propagates two electric displacement signals in anti-phase, and the relative amplitude of the signal strengths determines the frequency. As we shall now see, this involves the vacuum adjusting to the signal in transit to adopt a locally-tuned condition having the resonant frequency of the signal. The frequency at which electron-position pair creation occurs is the limit frequency beyond which there is no counter-displacement. However, the interesting point is that there is no forced oscillation and so no dispersion characteristic in the vacuum, since the vacuum adapts to any frequency and exhibits the properties of a tuned LC system. Such analysis assures us that the vacuum medium does not forcibly respond to the dynamic frequency characteristics of a signal. It propagates the primary and secondary displacements and the local vacuum resonates at the optimum frequency set by these displacements. In this way the signal frequency is preserved over vast distances."

On Heaviside:
> "Now, electromagnetic waves propagate through the ether without distortion and, though the ether is not subject to resistance and leakance, it does have inductance and capacitance, because there are magnetic fields and electric fields in the vacuum. Nature, anticipating Heaviside's contribution to telegraphic communication, has provided that extra something in the ether to secure distortionless signal propagation."

### 1.2 Aspden's later commentary on 1982a: the secondary structure is the muon field

**[Bibliography commentary on 1982a, 1990s]** `www-energyscience-org-uk-papers-bib-1982a` | 1982a | https://aetherscience.org/www-energyscience-org-uk-papers-bib-1982a/
> "The article deals with the major problem confronting aether theory, namely the issue of its non-dispersion property. It is vital to keep in mind that any dynamic system has to have inertial balance. One simply cannot have waves as electric charge suffering lateral displacement as oscillations propagate through space and not have something that oscillates in counterbalance. Maxwell's theory prescribes electric wave displacement but offers no inertial balance. [...] The counterpart in the aether is the response of the muon energy sea in providing the dynamic counterbalance. It is the same response that accounts for its adaptation to the Earth's motion in a way that precludes sensing of linear motion by optical techniques. [...] Here, however, our dual wave response, which involves the aether lattice oscillations being kept in dynamic balance by a muon field, is affected because one wave is attenuated in amplitude more than the other."

### 1.3 1983j, Lettere al Nuovo Cimento (December 1983): "reciprocal displacement", "partial dynamic balance"

**[1983j]** `pdf:www-aspden-org/papers/bib/1983j` | "The Scope for First-Order Tests of Light Speed Anisotropy", Lett. Nuovo Cimento 38, 568 | https://aetherscience.org/www-aspden-org/papers/bib/1983j.pdf
> "Some insight into the processes regulating the propagation of light waves may be gained from a consideration of the dispersionless property of the vacuum when conveying these waves. It is quite possible, as the author has suggested elsewhere (1), that the vacuum itself may have the special property of adjusting its response locally so as to be in tune with the instantaneous rate of change (frequency) of the propagated signal. This was inferred because otherwise the physical properties of the vacuum medium, if regulating propagation speed, should (as in a real medium) cause the speed to depend upon frequency. [...] The author (1) has presented a physical illustration of the field medium to account for its compliant nature. The essential feature of this model is the introduction of a reciprocal displacement to provide a partial dynamic balance offsetting the normal Maxwell displacement and so causing the natural resonance of the medium to adjust automatically to the frequency of the signal in transit. This condition holds up to a critical frequency deemed to be that corresponding to the threshold at which electro-magnetic energy creates electron-positron pairs. Our object here, however, is not to speculate on such physical processes [...]"
>
> "The field medium is able to respond to one-way propagation and follow changes in frequency of a composite signal because it has to respond momentarily only to one value of the signal rate of change and one value of its strength, It faces a dilemma in trying to respond to two signals travelling through one another in opposite directions."

### 1.4 1984e, Lettere al Nuovo Cimento 41, 252 (13 October 1984): the only equations

**[1984e, original OCR]** `pdf:www-aspden-org/papers/bib/1984e` | "The Steady-State Free-Electron Population of Free Space" | https://aetherscience.org/www-aspden-org/papers/bib/1984e.pdf
> "There is something very special about the true vacuum that is never mentioned in this context. It has the ability to transmit waves without frequency dispersion [...] The author (10) has recently discussed this zero dispersion vacuum property and argues that space itself must adapt to the local wave disturbance so as always to be in tune locally with the signal in transit. Furthermore, this frequency property must somehow be codified at each point in space-time without regard to whatever happens at adjacent points and without involving the propagation speed c. The author has shown that this state of affairs applies if one accepts that the electric field vector E is a composite of two electric field vector components E₁ and E₂ having separate physical significance. This allows us to write two equations: (3) [E = E₁ − E₂], (4) [dE/dt = (E₁ − E₂)F(E₁/E₂)], where t is time and F is a function of the ratio of E₁ and E₂. [...] The function F is governed by the condition that there is zero frequency dispersion, at least up to the threshold frequency at which electrons and positrons are created. One can infer that at this limit E₂ is zero, whereas at frequencies in the radio and optical spectrum E₁ and E₂ are approximately equal, even though their actual ratio is a crucial indicator of the frequency. [...] The analysis involves analogy with a simple harmonic oscillator for which the linear restoring force rate is a variable giving a resonant frequency f, where (5) [f² = kν²]. The variable k is equal to E/E₁, this being 1 − E₂/E₁. It gives E₂ = 0 when f = ν, as already mentioned, ν being the Compton frequency of the electron. For a sinusoidal planar wave the amplitude of dE/dt is 2πfE or 2πνk^½(E₁ − E₂) [...] Also, E₁ and E₂, though approximately equal in magnitude over much of the frequency spectrum, are associated with relatively very different charge densities and inversely so related to very different physical displacements. This causes one of them to be the seat of almost all wave energy loss [...] (6) [(1/f)∂f/∂x = (1/4W)∂W/∂x] [...] We arrive, therefore, at the remarkable proposition that the dual-component electric displacement, needed to explain the zero dispersion property of the vacuum, gives it the property of attenuating the frequency of waves in transit at one quarter of the rate at which the wave energy is absorbed"

The OCR renders eq. 3 as "i= E,—E#," and eq. 5 as "p= ke'". The readings in brackets are confirmed by TU18 (1999) and Lecture 11 (1998). Lecture 11 prints eq. 3 as **E = E₁ + E₂** (see Contradictions, item 2).

The same paper on electron–positron pairs:
> "The electron-positron pairs will not obstruct the passage of electromagnetic waves because they have a mutual inertial balance and are collectively neutral in their response to electric fields."

This is a principle that could, by analogy, be applied to the quon–continuum pair. Aspden does not apply it so.

**[Lecture 11, 25 February 1998]** `www-energyscience-org-uk-le-le11` | LECTURE NO. 11 | https://aetherscience.org/www-energyscience-org-uk-le-le11/

Reproduces 1984e with corrections, including the absorbing cross-section divided by 4 and the Hubble time 4.5×10¹⁷ s (14.3 billion years) in place of the original 3.6×10¹⁷ s. It adds:
> "It was shortly after that that the experimental research findings of Dave Gieskieng came to my attention. They confirmed to me that the aether does have the self-tuning, dual displacement property, which sustains natural oscillations at the signal frequency of electromagnetic waves."

### 1.5 Appendix to Lecture 10 (Gieskieng and Aspden, 1986/87; web 1998): two constituents; balance at zero frequency

**[Lecture 10 Appendix, 1986/87]** `www-energyscience-org-uk-le-le10app` | "An Antenna with Anomalous Radiation Properties" | https://aetherscience.org/www-energyscience-org-uk-le-le10app/

On the two constituents:
> "If the field arises from electric displacement currents, there is the question of what is actually displaced and relative to what is it displaced? [...] Considering the threshold frequency condition and the prospect from the above-mentioned experiments by Graham and Lahoz that a mass property must be associated with the vacuum medium, Aspden [8] has shown that the displacement is a relative displacement. There are two constituents in the field medium which move in opposition when an electromagnetic wave is in transit in a natural propagation mode. It is only by this means that the medium can have an inertial property which is hidden from us under normal circumstances and does not cause frequency dispersion in long range wave propagation."

On dispersion and response time:
> "The field medium has a response time of the order of 10⁻²⁰ s and will follow these field oscillations with negligible dispersion. [...] First, if the field medium has a natural threshold frequency and so a related inertial property, then such a wave must eventually suffer frequency dispersion. Yet, in the true vacuum that we associate with outer space, Warner and Nather [11] have found that the group velocity of light is constant to better than 5 parts in 10¹⁷. We must, therefore, at least have a suspicion that the accepted form of wave oscillation shown in Fig. 1 is not of the type which really does penetrate the vast distances of interstellar space."

On the counter-displacement and low frequencies:
> "Indeed, there is a counter-displacement which offsets the electric field condition and adapts to the frequency of the signal in transit so as always to be in resonance at a level set by the energy density of the wave. This resonance is not excited in the forced wave mode of Fig. 1. [...] Secondly, it is of interest to note that at zero frequency the counter-displacement state mentioned above is wholly balanced against any forward displacement. This is the state for which the vacuum medium has adapted to the local frame of the notional Earth-bound observer and moves with him through the cosmic space. However, in radio propagation we are concerned with the lateral displacements and these always have a partial, though nearly equal, electrical counterbalance displacement. Only at ultra high frequencies does this counter displacement become small, being zero at the threshold at which electrons and positrons are created."

References [8] and [9] are Wireless World 88, 37 (1982) and Lett. Nuovo Cimento 41, 252 (1984).

### 1.6 Tutorial Note 18 (1999): E₁ and E₂ in different charge systems; the "unity" dielectric

**[TU18, 1999]** `www-energyscience-org-uk-tu-tu18` | TUTORIAL NOTE 18, "Michelson–Morley Revisited" | https://aetherscience.org/www-energyscience-org-uk-tu-tu18/

On the unity dielectric constant:
> "When there is no matter present n² reduces to that value of unity but, hidden in the meaning of that unity term, is the oscillating system of the aether itself. We can formulate a simple harmonic oscillatory state by equating the restoring force of an electric displacement with an inertial reaction and, assigning the Compton electron frequency as the natural frequency of this oscillation. The standard electromagnetic wave theory then tells us that the unity dielectric constant of the vacuum (the aether) is implied by such an equation, namely the aether has a mode of oscillation that is at the Compton electron frequency."

On the second wave and the jitter:
> "Maxwell's theory tells us about the undulating lateral displacement of charge accompanying the passage of a wave. He overlooked the need for a secondary wave action which provides the dynamic balance. We can have dynamic balance in an inertial sense. We do not have the balance of the electric field action, but we must have two components in that electric wave. [...] the aether, owing to its adaptable fluid crystal type properties, comprises basically a system of charges, quons, which share a universal jitter motion. This is a quantum oscillation in two dimensions, a condition needed to assure dynamic balance with the graviton system. Superimposed on this motion there is, when an electromagnetic wave is being propagated, a lateral oscillation of those quon charges. [...] the quons also are compliant in a dynamically balanced sense in adopting a component of motion having the frequency of oscillation of that electromagnetic wave. This latter component of motion is represented by the composition of two lateral displacements indicated by the electric field E1 and E2. They act in opposition to give the net field effect that we sense as the electric field of the wave. They are seated in different systems of charge, because the quons exist in a background of heavier aether charges, virtual muons as well as gravitons, and there is on-going transmutation of form as energy is conserved in their quantum-electrodynamic interplay. The overall result, however, is the dynamic balance of the two components of the electromagnetic wave in its transit through aether. In contrast with its motion through matter it cannot call upon the substance of that matter acted upon by the presence of the electric field oscillations to provide the inertial reaction. This difference is vital when we come to judge why it is that light suffers frequency dispersion in passage through matter but not in passage through the structure constituting the aether."

On K and frequency:
> "The aether determines the function F by adapting itself so as to be always responsive in its reaction to the superimposed lateral motion occasioned by the passage of the wave in just such a way as to keep in tune with the frequency of that wave. It adapts its resonance mode by allowing the electric field E of the wave to separate it into two opposed displacement states, corresponding to E1 and E2, respectively. Thus, expressing the wave frequency f in terms of the Compton electron frequency fo, we can determine K as: K = (f/fo)² where K is equal to E/E1, which is 1 − E2/E1. This gives E2 = 0 when f equals fo. E1 becomes progressively larger relative to E as the frequency is reduced and, indeed, E2 also becomes progressively larger, but that ratio which determines k will keep the aether in tune with the frequency. This means that there is no frequency dispersion. [...] if the electric fields E1 and E2 arise from charges of opposite polarity moving in opposite directions, then E2 is a negative quantity"

### 1.7 The Physics of Creation (2003), ch. 9: the "reciprocal field oscillation" is in the muon sea

**[POC ch. 9, 2003]** `2edpocch9` | General Discussion | https://aetherscience.org/2edpocch9/ (also `book-physics-of-creation-2nd-ed-2edpocch9`)
> "Now, unlike the effects in a solid material medium, where lateral field oscillations occur on the passage of electromagnetic waves, with the atomic structure of the solid absorbing the strain, the aether copes by setting up a reciprocal field oscillation. Remember that we have in the aether the structured system of quons immersed in a sea of muons. If the quons are displaced laterally in setting up an electric field as the wave propagates in a forward direction, so some of the relatively massive muons must be displaced in an opposite sense to provide dynamic balance. This duality applies also where the quon lattice system is moving steadily along as it shares the motion through space of body Earth itself."

### 1.8 Other statements on why the vacuum is non-dispersive

**[ESR6, 1994]** `energy-science-report-6` | Energy Science Report No. 6 | https://aetherscience.org/energy-science-report-6/
> "How can an electric wave displacement propagate through space by its lateral oscillations if the field has energy and so mass and yet do this without that counterbalance? Where in the Maxwell equations do we see the formulation of the dynamic counter-balance, the wave which must accompany the propagating primary wave as an anti-phase partner?"

The same report describes "a structured electrical particle array moving inertially in counterbalance with a graviton system and an intermediate virtual mu-meson system occupying the inertial intermediate position."

**[ESR4, 1994]** `energy-science-report-4` | Energy Science Report No. 4 | https://aetherscience.org/energy-science-report-4/
> "Each cell of space must be regarded as a parallel-connected LC circuit and, as applied to the vacuum medium with its non-dispersive properties in wave propagation, one also needs a self-tuning resonance effect in response to rates of change of signal disturbances in transit. However, as back-up for this, there is the further property that steady reacting current flow is possible owing to the orbital motion of the vacuum charges in their quantum states."

**[1991a, Physics Essays 4, 13 (1991)]** `aether-science-paper-1991a` | "The Theory of Anti-Gravity" | https://aetherscience.org/book-aether-science-papers/aether-science-paper-1991a/

This is the clearest statement of a frequency-dependent restoring force:
> "The effect of simple linear oscillation has been excluded because there is evidence to show that Maxwell's equations involve lattice oscillations of this kind and that the vacuum lattice system can respond perfectly to all frequencies up to that at which electron-positron creation occurs. It is as if the lattice is tuned in respect of its linear motion to have, when displaced by an electric field, a restoring force rate that adjusts in compliance with the frequency to give perfect resonant response."

Its references for this are 18 (Wireless World 1982) and 19 (1984e).

**[Is There a Reacting Aether?, 28 August 2000]** `www-energyscience-org-uk-2000-es2001` | https://aetherscience.org/www-energyscience-org-uk-2000-es2001/
> "I say that oscillations transmitted through real material media must be dynamically balanced and so I would expect the aether to provide its own intrinsic dynamic balance when conveying electromagnetic oscillations. So I would expect the aether to have two components capable of electric displacement in opposite directions. Yet, Maxwell's theory [...] offers no dual-displacement feature associated with energy storage. Allow for that duality and you have an additional parameter which can optimize its action to ensure that the aether responds to the passage of electromagnetic waves to assure that there is no frequency dispersion. [...] Indeed, if an electromagnetic oscillation involves an electric displacement in an optical fibre, for example, the body inertia of the fibre has to absorb the lateral force oscillations to keep the dynamic balance and this action is a function of signal frequency."

**[Lecture 6, 23 August 1997]** `www-energyscience-org-uk-le-le06` | https://aetherscience.org/www-energyscience-org-uk-le-le06/
> "Those Maxwell equations are a statement about the physics of what is there in that vacuum. They tell me, at least, that a propagating wave undulates in planes at right angles to its direction of propagation. Then I ask myself how something physical can oscillate in that lateral sense without pushing on something equally physical to keep a balance. Quite obviously something is missing from Maxwell's equations. There must be two mutually-interacting physical attributes in the vacuum medium that assist in the propagation of those light waves."

**[Aether Science Papers, pp. 26–32, 1996]** `html:www-aspden-org/books/Asp/2632.htm` | https://aetherscience.org/www-aspden-org/books/Asp/2632.htm
> "To escape from that dilemma one needs first to understand how the aether attenuates electromagnetic waves without suffering dispersion. The secret here is the same as that which explains gravity. It is 'dynamic balance'. The aether has a dual displacement feature, whereas Maxwell allowed unbalanced lateral displacements which meant that waves travelled without exhibiting lateral inertia."

**[The Heresy of the Aether, 10 September 1998]** `www-energyscience-org-uk-ov-ov004` | https://aetherscience.org/www-energyscience-org-uk-ov-ov004/
> "those lateral waves need something other than the structure of the fluid crystal to provide a lateral dynamic balance. [...] Believe it or not, there is a kind of unseen 'snake' wriggling along side-by-side with the wave we eventually sense. It is an electrical component of the aether, a dual displacement feature, and it not only keeps the aether in balance dynamically, but it preserves the continuity of the wave oscillations when minor impediments are encountered in its transit through space."

**[Eddington's Unification, 1996]** `www-energyscience-org-uk-as-1013` | https://aetherscience.org/www-energyscience-org-uk-as-1013/
> "The aether has a non-dispersive property in this connection, because it really has two dynamic systems which keep in balance in a rather special way"

### Reading

Aspden's dispersion argument rests on inertia, not on electromagnetic screening. A lateral wave displacement of massive charge must be dynamically balanced. In matter the bulk takes the reaction, and that is what makes the response frequency-dependent. In the vacuum a second charge system must take it.
- In 1982 that system is an unnamed "secondary structure".
- In 1986 it is "two constituents".
- From the 1990s on he names it the muon sea (I-frame), once adding gravitons.

He also concedes the logic Part 1A §6.8 relies on: a fixed natural frequency "must eventually suffer frequency dispersion" (1986). His remedy is a medium whose resonance retunes itself to each signal ("restoring force rate that adjusts in compliance with the frequency", 1991).

At zero frequency the counter-displacement fully balances the forward one. At radio and optical frequencies the two nearly balance (E₁ ≈ E₂), and the net field is the small difference E = K·E₁ with K = (f/f₀)². In plasma language this is near-complete cancellation of the polarisation at low frequency, which is what Part 1A §6.7 noted. Aspden never says the lattice would otherwise block light. His stated problem is non-dispersion.

**Equations and testability.** Eqs. (3)–(6) of 1984e, and K = (f/f₀)² in TU18, are relations among field amplitudes at a point. They contain no masses, densities or charges of the second system, and no dynamics. They cannot give a dispersion relation and cannot be tested as wave propagation. The one testable output is eq. (6), dlnf/dx = ¼ dlnW/dx, which Aspden uses for the Hubble constant.

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## 2. How light propagates: what carries the wave, what sets c, and how displacement current relates to quon motion

### 2.1 Physics Without Einstein (1969), ch. 6, pp. 99–106: the lattice as a Lorentz medium

**[PWE ch. 6, 1969]** `book-physics-without-einstein-pwech6` | Chapter 6, "Space-time Analysis" | https://aetherscience.org/book-physics-without-einstein/book-physics-without-einstein-pwech6/

POC 2003 ch. 6 sends the reader here: "a reader interested in the formulating the speed of light in terms of aether lattice structure could refer to pp. 102-104 of the author's book 'Physics without Einstein'".

The E frame and how to analyse it:
> "Electromagnetic Wave Propagation. The particle lattice is the E frame of space-time. It is the electromagnetic reference frame. It is now necessary to show how disturbances are propagated at finite speed relative to this frame. To proceed, the fundamental harmonious motion of space-time in its undisturbed state is ignored. Any forces needed to sustain such motion in the inertial frame are deemed to be present, but they are ignored because the analysis will consider only effects relative to the E frame."

On Maxwell's theory and the displacement current:
> "The theory does not explain the mechanics of the aether which give rise to the phenomenon of finite velocity wave propagation. Maxwell's theory is really empirical. It involves a displacement current concept, and it is accepted, even though physicists are reluctant to assign charge in the aether as the source providing the displacement current. In the author's interpretation under review, charge in space-time has been specified. Now, we will proceed to derive the disturbance propagation velocity of the E frame lattice of this space-time medium. [...] The medium under analysis is, typically, a system of N electrons per unit volume. The electrons have charge e and mass m, and are all subject to a similar restraining force proportional to displacement distance, denoted ky [...] The equation of motion of the electron is: m(d²y/dt²) + ky − eVy = 0 (6.23) Here, Vy is the electric field intensity in the y direction. It is given by: Vy = V₀y − 4πNey (6.24) [...] k = p₀²m (6.27) noting that p₀ is the angular velocity of a free vibration of the electron [...] v = c√[1/(1 + φ)] (6.32) where φ is given as: φ = 4πNe²/m(p₀² − p²) (6.33) This is a formula used in electron theory to determine the refractive index of a medium [...]"

On the vacuum's unity term and the fixed G-frame orbit:
> "If, now, we analyse the space-time system itself on the assumption that it contains electrical systems reacting to disturbances just as the electron system described, we see that the unity term in the denominator of (6.32) may itself have the form of (6.33) or be a summation of such terms. To be unity, there must be no dependence upon propagation frequency. Thus, p must be very small compared with p₀. Earlier in this chapter, it was argued that the G frame moved in a fixed orbit. This was consistent with the charge density σ remaining uniform. Wave disturbance, therefore, no doubt involves displacement of the particle lattice. This lattice sets the E frame by its ground state, its undisturbed state. If it is displaced, each particle of charge e will be subject to a restoring force towards its ground position in the E frame. This force will be 4πσe times the separation distance, making this term the rate k applicable in (6.27). Thus, for the lattice particle of mass m₀: 4πσe = p₀²m₀ (6.34) Since Ne becomes σ, in the sense of this equation, it is seen how φ becomes unity in (6.33) when p is negligible. Thus, the theory of space-time presented will explain why the velocity of electromagnetic waves in free space is the parameter c relating electromagnetic and electrostatic units. It is to be noted that p₀ is not equal to Ω in (6.1)."

On a second mechanism at high frequency:
> "The above account explains why electromagnetic waves are propagated by the space-time lattice at the velocity c. It is important, however, to note that this wave propagation cannot be connected with the electrodynamic interaction of gravitation. [...] We are not, therefore, concerned with the problem of wave propagation by the space-time particle lattice, when we analyse effects at frequencies of the order of Ω. Propagation at such high frequencies involves another mechanism. This is the mechanism by which disturbances are propagated through the medium separating the lattice particles. [...] the pressure P within an electric charge e is given by: P = e²/4πb³ [OCR as printed; a pressure must have the form e²/b⁴, so the exponent or factor is garbled] (6.35) [...] there is the conclusion that a pressure P given by (6.35) pervades space. [...] v₀ = √(P/ρ₀) (6.38) [...] It is concluded that the space surrounding the lattice particles is filled with energy [...]"

Summary statement:
> "At this stage, it has been shown that the space-time system will sustain propagation of disturbances at the velocity c. Electromagnetic waves are carried by the lattice constituent of space-time. Electric field propagation at the velocity c occurs in the medium which surrounds the lattice particles and provides the pressure holding them in balance. It is this mechanism which operates according to the inverse-square-of-distance law. The action of this electric field disturbance is converted by lattice reaction into the Maxwell-type waves, which are onwardly propagated according to the direct-inverse-of-distance law. Lattice reaction is also effective in generating any standing magnetic fields."

Earlier in the chapter, on the G-frame orbit:
> "It is a firm assumption that the radius of the orbit of the continuum charge is fixed. It is assumed that velocity in this orbit is c/2. This is a matter for later proof."

Notes for the modeller:
- (i) From (6.1) with x = 2r, 8πσe = m₀Ω². With (6.34), p₀² = Ω²/2, so p₀ = Ω/√2 (ħp₀ ≈ 361 keV). This is the value Part 1A §5 obtains with the continuum held still. Aspden notes "p₀ is not equal to Ω".
- (ii) The derivation contains both a per-particle spring k = 4πσe (6.34) and the macroscopic polarisation term −4πNey (6.24). With σ = Ne these are numerically the same quantity. Part 1A §4 argues that they are physically the same field.
- (iii) The "unity" of the vacuum is taken to be the lattice's own φ at p ≪ p₀. This is reading B of Part 1, ε = p₀²/(p₀² − ω²).

### 2.2 PWE (1969), ch. 4: the E frame carries the wave; c scales with the orbital speed

**[PWE ch. 4, 1969]** `book-physics-without-einstein-pwech4` | https://aetherscience.org/book-physics-without-einstein/book-physics-without-einstein-pwech4/
> "An electromagnetic wave is a propagated disturbance of the E frame. The E frame can be disturbed if a discrete non-spherical unit of it rotates and so sets up a radial pulsation. [...] A little consideration will show that if the unit rotates at an angular velocity Ω/4 it will develop an electromagnetic pulsation at the frequency of the universal motion of space-time. Under these conditions there is no electromagnetic wave propagation since a little local adjustment of the E frame can contain the disturbance. A photon unit rotating at the angular velocity Ω/4 will be termed a standard photon unit. If the unit rotates at an angular velocity differing from Ω/4 there will be electromagnetic wave propagation at a frequency corresponding to four times this difference quantity. Thus: ν = 4ω/2π (4.3) where ω is the amount by which the angular velocity of the photon unit differs from Ω/4"

Earlier in the chapter (Part 1A §1.2 quotes part of this):
> "If angular momentum remains constant when energy is added to space-time ρv² remains constant, since Ω is constant. Hence no kinetic energy can have been added although v has increased. It follows that ρ has diminished and, since the mass energy density 2ρc² of free space is likely to be conserved, it also follows that c has increased in proportion to v. The conclusion from this is that v is, in fact, a parameter of space-time related directly to the velocity of light c."

### 2.3 Physics Unified (1980), ch. 2: displacement current and field cancellation; the q-charge disturbance moves at ½c

**[PU ch. 2, 1980]** `book-physics-unified-puchapter2` | Chapter 2, "Gravitation and Magnetism" | https://aetherscience.org/book-physics-unified/book-physics-unified-puchapter2/
> "Our only scope, then, for probing this medium is to be guided by the fact that it can sustain Maxwell's displacement currents and assert that this space medium itself contains electric charge in an overall neutral state. [...] This is a working hypothesis not invented to explain the propagation of light, as was the classical aether, but rather to provide us with a starting point and a reference frame for motion [...] Thus there will be no change in the Coulomb force on any particle due to the action of its neighbours. They move in register with one another locally and remote actions balance anyway owing to the large scale distortions of the lattice structure governed by the charge e and boundary conditions. [...] The restoring force on q is therefore: 4πσqD (37) This is equal to Vq. [...] V²/8π (40) This is the formula for energy stored by the electric field of intensity V. Its derivation in this way means that the hypothetical system proposed has the property of being able to deploy energy from the field of the charge e and transfer this into electric field energy associated more directly with the space medium. Put another way, the electric field of the charge e has, at least in the main body of the space medium where there are charges q, been cancelled by displacement of this electrical medium. Here then is the basis for the displacement currents we associate with Maxwell's theory."

On the half-speed (Part 1A §1.2 quotes part):
> "If the action of one electric charge on another is propagated a distance r in time 2r/c then the speed of propagation of disturbances in a sea of electric charge is ½c. This is not to be confused with the propagation of electromagnetic waves or electric field disturbance. It is the displacement speed of charge in the propagation direction. [...] A₁A₂ is drawn normal to CA because it represents an electric field vector not compensated by displacement. [...] The position of C can be determined, provided we know the speed at which the disturbance of the q charges propagates. Earlier in this chapter [...] it was shown that this speed is ½c. Readers may, however, not feel too comfortable about accepting this, because the concept of a natural propagation in the vacuum medium at half the speed of light is unfamiliar. Therefore, we will proceed using a general propagation speed c/k, where k is a constant believed by the author to be 2 [...] V = (kev/r²c)sinθ (45) which is Ampère's formula if k is unity"

So in this chapter the magnetic field is the part of the moving charge's field that the lattice displacement fails to cancel because of retardation at ½c.

### 2.4 Physics Unified (1980), ch. 3: the lattice sets the frame; c₁ = √(P/ρ_lattice)

**[PU ch. 3, 1980]** `book-physics-unified-puchapter3` | Chapter 3, "The Structure of the Vacuum" | https://aetherscience.org/book-physics-unified/book-physics-unified-puchapter3/
> "The answer appears to be that it is being transported forward by the E-frame and backwards by something moving in a counter-motion to the E-frame, with the result that it remains undeflected. [...] The model we come to, in terms of the q charge system, is that the E-frame comprises a structured lattice of q charges which may move bodily through space. However, to avoid any build-up of q charge at the forward boundaries of such a system, when moving linearly, there is a migrant population of q charges in reverse flow through the lattice. [...] It seems then that the frame of reference for electromagnetic disturbance is set by the lattice system, and so the speed of light is referenced on this E-frame lattice, but the linear motion of the lattice cannot drag a light beam laterally. [...] It would seem more consistent to look to the lattice properties to provide a structure having a degree of rigidity and capable of generating displacements which propagate at a fixed speed in a universal frame of reference. The rigidity could stem from the powerful electric interaction forces between the q charges [...] c₁ = (P/ρ)^½ (59) where ρ is the mass density of the lattice."

The same chapter (eq. 58) uses n² = 1 + φ and calls "the unity term [...] a vacuum property".

### 2.5 Physics Unified (1980), ch. 5 and ch. 9: lattice disturbance; light speed tied to the lattice particles' speed

**[PU ch. 5, 1980]** `book-physics-unified-puchapter5` | Chapter 5, "Quantum Mechanics" | https://aetherscience.org/book-physics-unified/book-physics-unified-puchapter5/
> "An electromagnetic wave is a propagated disturbance of the lattice structure formed by the q charges."

On the wave equation it uses:
> "The standard wave equation of frequency ν is: ∇²A + (4π²ν²/c²)A = 0 (109)"

This is used to derive the Schrödinger equation.

**[PU ch. 9, 1980]** `book-physics-unified-puchapter9` | Chapter 9, "General Discussion" | https://aetherscience.org/book-physics-unified/book-physics-unified-puchapter9/
> "Firstly, the speed of light is justified theoretically by Maxwell's theory once it is accepted that c is the parameter relating electromagnetic and electrostatic units of charge. This relationship was established earlier in this work by arguments based upon Fig. 17. The parameter c used in that figure was shown to be halved by retardation. ½c became the speed of the lattice particle in its natural cyclic oscillations at the space frequency. Thus, indirectly, the speed of light at any position in the vacuum medium depends upon the speed of the bound lattice particles."

This is followed by δΦm + m(c/2)² = constant (238), used for the gravitational deflection of light.

### 2.6 The Physics of Creation (2003), ch. 6 and ch. 9

**[POC ch. 6, 2003]** `book-physics-of-creation-2nd-ed-2edpocch6` | https://aetherscience.org/book-physics-of-creation-2nd-ed/book-physics-of-creation-2nd-ed-2edpocch6/

Part 1A already quotes eqs. 6.1–6.4 and "Here then is the basis for the displacement currents". On refractive index:
> "Electron theory as applied to solids gives a formulation of the refractive index of a substance in terms of its atomic structure, the number of atoms per unit volume and the natural oscillation frequencies involved. A version of the formula is: (c/v)² = 1 + φ (6.7) [...] if we ignore the presence of that solid material substance by writing φ as zero, then that unity term in equation (6.7) can be said to be the corresponding φ formulation of aether parameters."

On the G-frame:
> "The aether has become a charge system sustaining the cyclical motion of the system of the aether charges q in circular orbits with the continuum charge and its associated graviton population moving in dynamic balance also in circular orbits."

On muons:
> "the aether lattice inertia is balanced by the inertia of the muons that provide a balance by migrating slowly in the opposite direction."

**[POC ch. 9, 2003]** `2edpocch9` | https://aetherscience.org/2edpocch9/

The cleaner of the two copies:
> "Let there be N like charges e per unit volume within an electrical continuum of uniform but opposite charge density σ. Then: Ne = σ (9.15) Let N1 and N2 denote the population density in the primary structure (the quon system) and secondary structure (the muon counter flow), respectively. Then: N = N1 + N2 (9.16) On the basis of electron theory the propagation velocity is proportional to (Noe²/m)^½, where there are No charges e of mass m per unit volume, and the system has a resonant mode at frequency given by the angular velocity: ω² = 4πNoe²/m (9.17) By analogy with the properties of matter we know that the propagation velocity is given by (P/ρ)^½ [...] c1 = (P/N1m)^½ (9.18) for the speed of light c1 set by the primary structure of the aether [...] vN1 + uN2 = 0 (9.19) [...] n = c/c1 (9.20) [...] proving, from simple classical electron theory, that the speed of light will be referenced on the vacuum structure moving with the Earth [...] That vacuum structure is the system of lattice charges, the quons"

Eq. 9.17 is literally the (quons-only) plasma frequency, which Aspden calls a "resonant mode".

### 2.7 Research Note 4/98, "Maxwell's Equations" (6 June 1998): quons oscillate laterally; no magnetic field in free space

**[RN9804, 1998]** `www-energyscience-org-uk-notes-rn9804` | https://aetherscience.org/www-energyscience-org-uk-notes-rn9804/
> "I maintain that we must accept that the aether exists and contains electric charge in some form and so I say that it contains quons, electric charges of common polarity permeating a uniform continuum of opposite charge. [...] let us first ask how those quons in the aether might oscillate as they transmit an undulating electric wave. They will, like the up-and-down wave motion of the sea, oscillate laterally with respect to the wave propagation direction and the potential energy stored by electric displacement will be exchanged with the kinetic energy of the up-and-down charge motion. In fact, the energy is that of a standing wave condition, meaning that energy does not have to flow at the propagation velocity of the wave. [...] the equation for the electric oscillations is the same as that we can deduce if the electric potential is exchanged cyclically with the kinetic energy involved in those lateral oscillations, given that the quons must have a mass property. [...] In free space remote from matter and a radiating source, electromagnetic waves therefore travel without conveying energy and they really would be better termed as 'electric waves', given that no magnetic field energy is involved. [...] I say that there is no such thing as a magnetic field out there in free space and that what we call electromagnetic waves are merely electrical oscillations exchanging electric potential energy and kinetic energy. [...] the quon system does have mass. Indeed, I calculated this long ago and found that it was very nearly 144 gm/cc [...] All one has to do is to explain the evident lack of aether momentum by accepting there is scope for motion of free quon charges in counterflow through moving aether [1976a] or an analogous activity by a leptonic activity involving muons"

(Part 1A W10 gives 143 g/cm³.)

### 2.8 Lecture 3 and its Appendix (1997); PWE ch. 9 (1969); PWE ch. 2 (1969)

**[Lecture 3 Appendix, 1997]** `www-energyscience-org-uk-le-le03app` | https://aetherscience.org/www-energyscience-org-uk-le-le03app/
> "You see, I knew that Maxwell's equations demand a solid-like structure to sustain the lateral oscillations associated with wave propagation. [...] I saw a star as having a spherically-bound structured aether, capable of sustaining the propagation of waves at a finite speed determined by the structural properties of that aether model. [...] My reason was that, if the aether lattice structure is the frame of reference for electromagnetic wave propagation, the frame's distortion or motion cannot set up gravitational or electromagnetic fields. [...] This structure cannot withstand linear forces because it will yield as a fluid with a counterflow which compensates and nullifies its overall linear momentum."

**[Lecture 3, 1997]** `www-energyscience-org-uk-le-le03` | https://aetherscience.org/www-energyscience-org-uk-le-le03/
> "The way in which Maxwell's equations have been formulated implies, however, that the propagation of an electromagnetic wave requires, not the exchange of energy between the electric potential and electrodynamic states, but rather their increase and decrease together in time phase. This forces the energy to travel with the wave at its propagation velocity"

**[PWE ch. 9, 1969]** `book-physics-without-einstein-pwech9` | https://aetherscience.org/book-physics-without-einstein/book-physics-without-einstein-pwech9/
> "The light from the star is refracted at the boundary between the earth's aether and surrounding aether. [...] the author's proposal, which admits the space-time lattice to have mass energy associated with it so as to modify its propagation properties. The propagation velocity is fixed relative to the lattice frame in vacuo"

**[PWE ch. 2, 1969]** `book-physics-without-einstein-pwech2` | https://aetherscience.org/book-physics-without-einstein/book-physics-without-einstein-pwech2/
> "If we are not then to be led immediately into the trap of thinking that this reacting charge determines the frame of reference for electromagnetic wave propagation, we must think in terms of wave disturbance. Something is disturbed. There must be something other than the reacting charge."

### 2.9 Natural versus forced waves; symmetrised Maxwell equations

**[Lecture 10 Appendix, 1986/87]**, as above:
> "If the field medium had a natural oscillation frequency equal to that at which the antenna is excited, then the energy deployment could involve electric displacement with energy transferring at each point in space between the electric field and the kinetic energy of the displacement rate. [...] In fact, there need not be a true magnetic field in this case. The electric field does all the work [...] Maxwell's field equations change from the form: (1/c)dE/dt = curl(H) (1), −(1/c)dH/dt = curl(E) (2) to: (j/c)dE/dt = curl(H) (3), −(j/c)dH/dt = curl(E) (4) where j is the familiar operator signifying phase advance of 90°"

**[TU12, 1999]** `www-energyscience-org-uk-tu-tu12` | https://aetherscience.org/www-energyscience-org-uk-tu-tu12/
> "Had the equations been formulated in a symmetrical form [...] they would have the form: −j(K/c)dE/dt = curl H, −j(μ/c)dH/dt = curl E, div E = 0, div B = 0 [...] If I say this second set of equations represents 'Aspden's hypothesis', and use this instead of the Maxwell version, then I will still get those electromagnetic waves propagating from A to B at the speed of light. They will convey no energy from A to B"

### 2.10 The Theory of Gravitation (1960), ch. 8: the critical field in wave propagation

**[TG ch. 8, 1959/60; 1998 notes]** `www-energyscience-org-uk-tg-pr3` | https://aetherscience.org/www-energyscience-org-uk-tg-pr3/
> "The energy of a photon may be transmitted as a forced vibration in the aether. [...] It represents the amplitude of the displacement of an aether particle as it transmits the photon energy. For the particle acceleration to be equated to the photon driving force the photon field V must balance the electrostatic restoring action due to the displacement of the particle in the continuum. The equation of balance is: 4πσex = Ve (39) If x is limited to the value x₀ = h/2πmc, V has a limiting value V₀ equal to 4πσx₀ [...] This aether theory therefore leads to the prediction of a critical field strength which cannot be exceeded in a wave propagation. [...] The value of this critical field is 2.21×10¹³ cgs esu."

### Reading

Throughout 1969–2003 Aspden says the quon lattice (E-frame) carries electromagnetic waves and sets their reference frame. He describes the quons as oscillating laterally, with electric displacement energy exchanged against quon kinetic energy. He identifies the "magnetic" energy of a wave with that kinetic energy (POC 2003; RN9804 1998).

c is fixed in four different ways:
- (i) as Maxwell's ratio of units, with the vacuum's unity term identified with the lattice's own Lorentz-oscillator term at frequencies far below its resonance p₀ = Ω/√2 (PWE 1969);
- (ii) as √(P/ρ_lattice), from an analogy with solids (PU 1980, POC 2003);
- (iii) as proportional to the orbital speed v, from energy-density arguments (PWE 1969 ch. 4);
- (iv) through the ½c retardation speed of the q-charge displacement, "indirectly" (PU 1980 ch. 2 and ch. 9).

He does say a second medium is involved, but only in PWE 1969. The energy medium "which surrounds the lattice particles" carries electric field (inverse-square) disturbances at c and handles propagation near Ω. That medium is a pressure or energy medium, not the σ continuum; the continuum's orbit is said to be fixed. The displacement current is the quon displacement (PU 1980, POC 2003). He explicitly says this displacement *cancels* the field of the disturbing charge.

**Equations and testability.**
- PWE eqs. 6.23–6.34 are a complete, testable dispersion relation for the separately-sprung lattice: ε(ω) = p₀²/(p₀² − ω²) with p₀ = Ω/√2. Part 1 U12–U14 tests it (reading B). POC 2003 eq. 6.7 points back to it.
- POC eqs. 9.15–9.20 and PU eqs. 59–63 concern drag and frame only.
- The symmetrised equations with j give no new dispersion relation; for real fields j merely shifts the phase.
- TG eq. 39 gives a testable bound: a maximum wave field of about 2.2×10¹³ statV/cm, about 6.6×10¹⁷ V/m.

---

## 3. Why c/2: the two frames, momentum balance, dynamic balance, jitter, synchronism and the I-frame

Part 1A §1.2 already quotes TG 1960, PWE ch. 4, 6 and 7, PU ch. 2 and 5, POC ch. 5 and 6, and TU18/TU20. The additional texts are below.

### 3.1 PWE (1969), ch. 5: a relative speed c makes the continuum's self-forces cancel

**[PWE ch. 5, 1969]** `book-physics-without-einstein-pwech5` | Chapter 5, "Gravitation" | https://aetherscience.org/book-physics-without-einstein/book-physics-without-einstein-pwech5/
> "Indeed, both the E frame and the G frame move in counter-balance in the same circular orbit relative to the inertial reference frame. [...] Since the E frame is the electromagnetic reference frame, there can be no direct magnetic force between these particles forming the lattice. In contrast, since the charge of the continuum in the G frame is moving at velocity c relative to the E frame it has its own mutual magnetic interaction which exactly cancels its mutual electrostatic action. This follows using the law of electrodynamics presented in Chapter 2. At any instant the charge is in parallel motion. Exact cancellation of the mutual forces in the continuum explains why it can form into a continuum. It is unlike the behaviour of charge in a particle subject principally to self-repulsion. [...] Firstly, note that there is no question of propagation delays in the magnetic interaction forces between G frame substance. Motions are mutually parallel but constantly changing direction. [...] if the G frame comprises the same magnitude of charge as that of the lattice particles in the frame, it is difficult to understand how the G frame can have the same mass density and so have the same orbital radius. [...] The only answer available is to assume that the G frame has some rather heavy elementary particles of charge e [...] These particles are termed 'gravitons'."

On the freed particles:
> "When the lattice is in linear motion, some particles must exist in a free state. [...] The freed particles can deploy their kinetic energy to travel at speed in the direction opposite to the linear motion of the lattice"

**[PWE ch. 6, 1969]**, as above:
> "Since the charge continuum which moves with the G frame is deemed to have the velocity c relative to the E frame, to account for its uniform dispersion, the fact that the E and G frames move in the same orbit of radius r means that both move at velocity c/2."

On why x = 2r and equal mass densities:
> "Now, kinetic energy tends to increase in a dynamic system, just as potential energy tends to decrease. [...] It follows that x must equal 2r, for the normal undisturbed state of space-time. This then makes the mass densities of the G frame and the lattice particle frame equal"

### 3.2 Physics Unified (1980), ch. 5: synchronous countermotion; synchronism; no relativistic mass

**[PU ch. 5, 1980]**, as above:
> "the mutually parallel motion of the gravitons and the continuum satisfies the requirement of the law of electrodynamics for direct mutual attraction [...] the key point is that the rapid cyclic motion portrayed in Fig. 22 has no retarding effect upon gravitational action. Nor, indeed, does it affect the electrical actions between the charges because the spatial energy deployment of the direct electric interaction fields remains constant relative to the C-frame. [...] The q charges are all constrained in the system depicted in Fig. 22 to stay in synchronism. This constraint comes from their electric interactions. It gives rise to extraneous fields which resist any distortion of this synchronous state. Radial distortions and lateral distortions can occur but not this frequency distortion. Therefore the q charges have only two degrees of freedom. [...] As a result there can be no relativistic increase in mass of a q charge. Its mass is effectively constant. [...] it assures that the system behaves as a linear oscillator [...] We can therefore use Newtonian mechanics to calculate the behaviour of the space medium, in spite of the fact that the relative velocity of the C-frame and G-frame is the speed of light."

### 3.3 Feedback Note 8 (2001): c/2 *derived* from Heisenberg and the Compton frequency

**[FN08, 2001]** `www-energyscience-org-uk-feedback-fn08` | "Response to William Buick" | https://aetherscience.org/www-energyscience-org-uk-feedback-fn08/
> "The parameter r represents the radius of a circular path in the inertial frame about which the components of that lattice move at velocity v in unison, perfect synchrony, so that, in the language of quantum theory, an electron (of mass m) sharing that state of motion will have a position that is uncertain by 2r and a momentum that is uncertain by 2mv but the product of these two uncertainties, 4mvr, will be certain because it has the value h/2π. [...] This motion has a cyclic frequency equal to the Compton electron frequency [...] something has to exist in the aether to provide the necessary dynamic balance, something which sits in a juxtaposed frame of reference moving at a speed 2v relative to that aether-cum-matter frame. [...] You may verify from the above argument that: 4mvr = h/2π and this allows us to determine v, because: v/2πr = mc²/h Evidently v equals c/2 and from this I was able to argue that whatever that something was sitting and moving in that frame which was in inertial juxtaposition with the aether-cum-matter frame, it was moving at speed c relative to the latter frame."

The logic here runs the other way from POC 2003. v = c/2 follows from two conditions: the uncertainty product taken as exactly ħ, and orbital frequency = Compton frequency. The relative speed c is then a consequence, not a postulate.

### 3.4 Tutorial Notes 6, 8 and 20 (1997–98); essays of 2000: the three frames

**[TU06, 1997]** `www-energyscience-org-uk-tu-tu06` | https://aetherscience.org/www-energyscience-org-uk-tu-tu06/
> "you need to picture all elements of matter as sharing a common synchronized motion, all those elements moving in tiny circular orbits about an inertial frame. Then the gravitons must be pictured as moving in counterbalance in orbits of the same radius [...] Then, sitting in the inertial frame and defining that frame are the virtual muons and these have no orderly motion [...] The relative velocity of the graviton frame (the G-frame) and the matter frame or electromagnetic frame (the E-frame) will be assumed to be c, this being a natural speed parameter we surely recognize as a property of the vacuum medium. Therefore, any electric charge that happens to be part of that G-frame will interact electrodynamically with other such charge, but will not interact electrodynamically with matter charge at rest in the E-frame. Furthermore, that speed c will make the electrodynamic effect of a charge e in the G-frame seem to have the strength we associate with electrostatic interactions"

**[TU08, 1997]** `www-energyscience-org-uk-tu-tu08` | https://aetherscience.org/www-energyscience-org-uk-tu-tu08/
> "[Dirac:] 'As a result of this oscillatory motion, the velocity of the electron at any time equals the velocity of light.' [...] However, you may now see from this that the relative motion between the G-frame and the E-frame in the theory I introduced in Tutorial No. 6 and Tutorial No. 7 is that speed c."

The same note on rest mass:
> "the synchronizing constraints set up by the quon interactions oblige the quons to retain their basic rest-mass. We are not dealing here with a solitary quon which has to store its own added kinetic energy in its mass system."

**[TU20, 28 December 1998]** `www-energyscience-org-uk-tu-tu20` | https://aetherscience.org/www-energyscience-org-uk-tu-tu20/
> "Remember here that the aether has a G-frame, an I-frame and an E-frame. The G-frame is the seat of the dynamic action which balances the centrifugal effects of the E-frame and matter seated in this E-frame, this frame being the electromagnetic frame of reference. The I-frame is the inertial frame central to the E-frame and the G-frame. The virtual muons populate the I-frame. [...] given that gravitons exist in positive and negative forms, and that they all share a harmonious ever-parallel motion at speed c relative to the E-frame, you can perhaps then understand that the electrostatic forces acting between graviton charge is exactly cancelled by the electrodynamic forces. [...] Apart from c being speed relative to the E-frame, whereas c/2 is the speed relative to the I-frame, the inertial frame, the answer to that resides in the fact that those graviton particles are not moving freely. They move under the constraint of a system of quons, aether charges sharing the motion of the E-frame, which forces them to stay in synchrony moving in anti-phase with that quon system. They keep in step at the jitter frequency of the aether because they are part of a simple harmonic system"

**[Cosmic Mud or Cosmic Muddle?, 2 November 2000]** `www-energyscience-org-uk-2000-es2007` | https://aetherscience.org/www-energyscience-org-uk-2000-es2007/
> "The virtual muons are the primary energy component. They populate and define the I-frame (the inertial reference frame). The E-frame has a cyclical harmonious motion about the I-frame and so needs to be dynamically balanced by a G-frame system in juxtaposed motion relative to the E-frame. Here G implies the gravitational role of the vacuum state, which is seated in the presence of the tau, graviton and supergraviton particles"

**[The Theory of Gravitation (essay), 29 August 2000]** `www-energyscience-org-uk-2000-es2003` | https://aetherscience.org/www-energyscience-org-uk-2000-es2003/
> "a mass M sitting at rest in the electromagnetic reference frame (the E-frame) has angular momentum owing to its motion about the inertial frame (I-frame) and its centrifugal action needs to be balanced by a corresponding mass M of gravitons and leptons of a gravitational frame (G-frame) moving with that frame in juxtaposed relationship."

**[The Fifth Question, 18 June 1998]** `www-energyscience-org-uk-question-es0105` | https://aetherscience.org/www-energyscience-org-uk-question-es0105/
> "the electromagnetic reference frame is itself in a state of jitter in the inertial frame."

The same text on c:
> "the speed of light c. The latter quantity is a property of the expanse of space in which we know there can be resonance at photon energy levels sufficient to generate an electron-positron pair."

### 3.5 The Theory of Gravitation 1998 note: the continuum produces no magnetic field

**[TG ch. 2, 1959/60 with 1998 note]** `www-energyscience-org-uk-tg-pr1` | https://aetherscience.org/www-energyscience-org-uk-tg-pr1/

The 1959 text is quoted in Part 1A. The 1998 note on the "magnetic balance" eq. (8):
> "this equation does not feature in the author's later work. Aether, undisturbed by matter, does not exhibit a magnetic field, as such [...] The key which revealed the secret was the realisation that the system of aether particles constituted the electromagnetic reference frame. This meant that the aether particles, though sharing a universal jitter at least over vast regions of gravitationally-coherent space, in their synchronized motion in circular orbits in the inertial frame, did not produce a magnetic field. It was then seen that the continuum charge σ, though moving relative to the electromagnetic reference frame, could not produce a magnetic field. This was owing to its lack of presence as a concentrated charge form having collectively the same charge polarity, that of the continuum."

On counter-motion in TG 1960 ch. 6:
> "This involves a continuous counter motion of free aether particles through the moving lattice. A system may be envisaged in which some of the aether particles retain their harmonious orbital motions but disturb the aether a little as they migrate at a fairly high speed (probably of the order of the speed of light) in an opposite direction to the lattice movement."

### 3.6 Synchronous lattice electrodynamics (1987) and instantaneous action

**[1987b, Hadronic Journal 10, 185 (1987)]** `aether-science-paper-1987b` | "Synchronous lattice electrodynamics as an alternative to relativistic time dilation" | https://aetherscience.org/book-aether-science-papers/aether-science-paper-1987b/
> "A special situation, which lends itself to rigorous analysis, arises where the orbital motion of all the elements is subject to synchronizing constraints applicable within each frame system and between the two systems. This is the condition we describe by the expression synchronous lattice electrodynamics. The essential point is that the synchronous motion sets up mutual potentials between the elements which do not vary in response to that motion. This means that there is no continuous exchange of energy and so no retardation to consider. Action at a distance then assumes more meaning. [...] the constant time rate of the oscillations ensures that any mass associated with the lattice elements is constrained to be constant. [...] The photon theory brings c into the lattice system as the relative speed of the lattice and the system moving in juxtaposition with it. Thus 2Ωr = c."

**[Aether Science Papers, pp. 33–35, 1996]** `html:www-aspden-org/books/Asp/3335.htm` | https://aetherscience.org/www-aspden-org/books/Asp/3335.htm
> "The acceptance of a coordinated state of jitter motion, which could not occur unless there is an instantaneous action-at-a-distance in the Coulomb sense, is essential to the understanding of the causal factors governing gravitation. It is this that gives the charges their rest mode in the electromagnetic frame, notwithstanding the jitter motion in the inertial frame."

### 3.7 Does the counter-motion bear on wave propagation? Every text that comes close

**[TG 1960]**, quoted in Part 1A:
> "When the aether is disturbed and the disturbance is propagated relative to the aether particle system or the continuum this velocity 2v will equal the propagation velocity c."

**[PWE ch. 6, 1969]**, as above: the counter-motion is set aside for wave analysis.
> "To proceed, the fundamental harmonious motion of space-time in its undisturbed state is ignored. Any forces needed to sustain such motion in the inertial frame are deemed to be present, but they are ignored because the analysis will consider only effects relative to the E frame."

**[PU ch. 9, 1980]**, as above:
> "½c became the speed of the lattice particle in its natural cyclic oscillations at the space frequency. Thus, indirectly, the speed of light at any position in the vacuum medium depends upon the speed of the bound lattice particles."

**[TU18, 1999]**, as above: the jitter is "a quantum oscillation in two dimensions, a condition needed to assure dynamic balance with the graviton system. Superimposed on this motion there is, when an electromagnetic wave is being propagated, a lateral oscillation of those quon charges."

### Reading

Aspden's reasons for the two counter-moving frames are mechanical. Matter in the E-frame "jitters" (Heisenberg, Dirac's zitterbewegung), so something must balance its centrifugal action and keep the momentum zero. That something is the G-frame, whose mass sits in gravitons, taus and supergravitons, with the σ continuum moving with it. Maximising kinetic energy at fixed separation gives equal mass densities and equal radii (PWE 1969; PU 1980), so each frame moves at c/2 if the relative speed is c.

Why c? Five reasons appear in the texts:
- (i) it is the "natural speed parameter" of the vacuum (TU06; POC);
- (ii) at relative speed c the electrodynamic forces between G-frame charges exactly cancel their electrostatic forces, which lets the continuum exist uniformly (PWE 1969) and makes gravitons attract with electrostatic strength (TU06, TU20);
- (iii) Dirac's zitterbewegung at c (TU08; PU);
- (iv) disturbances propagate relative to either system (TG 1960);
- (v) it is derived from Heisenberg's relation taken as exactly ħ, plus the Compton frequency (FN08 2001).

From 1969 the I-frame (virtual muons) sits at the centre, and the dual displacement is attributed to the muons.

**No text argues that the c/2 orbital counter-motion changes how the lattice responds to a light wave.** For wave analysis he explicitly sets the orbital motion aside (PWE 1969), and he says the cyclic motion does not affect electrical actions between the charges (PU 1980). The counter-motion enters light theory only in three places: the definition of c, the c/2 backflow in Fresnel drag (TU18), and the claim that synchronism makes the quon mass constant, with no relativistic increase.

**Equations.** The orbit equations are given and tested in Part 1A (POC 6.5–6.6, PWE 6.1–6.2, 6.40–6.44, PU 86–93, FN08). None is a wave equation.

---

## 4. Gyroscopic and magnetic aspects; slow versus fast fields

### 4.1 Translation produces a lateral orbit shift (1987)

**[1987b]**, as above:
> "An astonishing property, which is extremely important to our consideration of the vacuum state, is that a synchronous electrodynamic lattice, when transported under the influence of a dominant enveloping synchronous lattice, will experience an induced electric displacement. What happens is that the orbits are displaced in their planes laterally with respect to the direction of the translational motion. When we work out the energy density of this displacement, it is found that it corresponds to ¼(v/c)² times the energy density of the lattice system. [...] for the bulk rotation of the lattice (as with the whole Earth, for example), the effect of the synchronizing action is to induce electric displacement radial to the axis of rotation. However, the electric field in this case is merely balanced by charge displacement in matter that cannot be detected, except via its magnetic field effects [...] The synchronizing constraints operate to take up the electric strain, but permit magnetic effects."

From the appendix:
> "ρΩ² = 2k. (5) The factor 2 arises from the balancing action of a mass density ρ describing similar orbits in a diametrically juxtaposed position. [...] E = (2ρΩr²)Ω. (6) [...] When the whole lattice system is transported at a velocity v under this universal synchronizing constraint, the center of the orbit is shifted from O to O′, perpendicular to the velocity v and in the orbital plane [...] x² = (2r)² + δ² − 2(2r)δcosθ. (7) Note that in order to displace the orbit the synchronizing constraints have to develop electric forces tending to separate the lattice of charge density −σ and the background continuum charge density +σ in the juxtaposed system through a distance δ. The term ½kδ² is then a measure of the energy density V²/8π of an electric field of intensity V induced by this process. [...] It is very important to realize that this additional energy is electric field energy and corresponds to an electric field acting lateral to the motion at speed v. The synchronizing constraint asserted between lattice systems in relative motion is therefore analogous to a centrifugal action."

(OCR: "¼(v/c)²" is printed "4(v/c)?"; "Hence 2δ is v" is probably "Ωδ is v".)

### 4.2 A static E field produces a quon drift at right angles to E (2003); reconsidered (2002)

**[POC ch. 9, 2003]**, as above, "The Physics of the 'Magic' Capacitor":
> "When I asked myself what happens when an electric voltage is applied between those two capacitor plates I could see that the aether charges would all be displaced in unison relative to the centres about which they are in circular orbit. Then I could see that they could not keep strictly in synchronism with their counterparts elsewhere in nearby space unless they were subject to a continuous very high frequency oscillation of energy exchange, something I felt was impossible. Then, and by 'then' I mean nearly 50 years ago, I saw how Mother Nature deals with this problem. If that applied voltage has a two-fold effect, in that it displaces the aether charge in the direction of the electric field to a new equilibrium position but also produces, between the capacitor plates, a continuous motion of that charge at right angles to that direction, then there can be absolute synchrony with external space charge with no high frequency energy exchange problems. [...] This means the whole structure of aether particles must acquire a linear motion in the space between the capacitor plates, a motion which increases as the voltage between those plates is increased. In other words, I could see that one unit of electrical energy added to charge the capacitor would be supplemented by a further unit of energy accounting for that linear motion and it would be supplied by the external quantum jitter of the aether, since it was the external aether that was applying the constraint that assures the universal synchrony."

**[Lecture 27 notes, 28 April 2002]** `www-energyscience-org-uk-le-le27-notes` | https://aetherscience.org/www-energyscience-org-uk-le-le27-notes/
> "Here, on reflection, I find that I may have been in error in suggesting that holding to strict synchrony throughout the orbital period without lateral motion might lead to an impossible process of continuous very high frequency oscillation of energy exchange. If that linear lateral displacement of charge were to be precluded by the fact that charges would be driven into one another and so set up an electric field opposing that motion, then the charge orbits between the capacitor electrodes could not be displaced in that lateral direction. Then what I at first deemed to be impossible may indeed be possible. The quantum underworld may well be able to cope with extremely rapid exchanges of energy as between its constituent vacuum charges"

### 4.3 Vacuum spin: a radial E field and rotation are coupled through phase-lock

**[Lecture 26, Perugia 1996, published 1999]** `www-energyscience-org-uk-le-le26` | "The Contemporary Aether" | https://aetherscience.org/www-energyscience-org-uk-le-le26/ (same text in `html:www-aspden-org/books/Asp/1825.htm`, 1996)
> "The key property of the real aether is its universal rhythm, its universal time keeping, as enforced by a phase-lock between its quantum properties. [...] An electric charge e in the aether, as needed in Maxwell's displacement theory, complies with a force rate of 4πNe², where there are N charges e in unit volume of space [...] This restoring force rate determines the jitter frequency of the vacuum state by the equation: 8πN²e² = ρ(Ω)² (1) where ρ is the effective mass density of the aether, which is proportional to N. In the equation 8π has replaced 4π because, to assure dynamic balance, the orbital radius of the motion is half of the displacement, which spans the orbit diameter. Now consider the superimposed effect in a sphere of aether which spins at the angular frequency ω. If the spin is in the same sense (parallel axes of spin) as the quantized orbital motion, then to keep the phase-lock as between enveloping aether and aether in spin, the equation (1) becomes: 8π(N−δN)e² = (ρ/N)(Ω − ω)² (2) [...] δN/N = 2ω/Ω (3) [...] Suppose we can contain some positive ions into a small sphere. The aether will see this as producing a radial electric field from the centre of that sphere and it will develop a charge displacement to neutralize that core charge and effectively transfer the charge effect to the surface of the sphere. Now, this means that N has been changed in that sphere and so the natural frequency of quantum jitter will change. The aether charges lying outside that sphere will, however, not allow this loss of synchronism and very powerful electrostatic forces are asserted to ensure that the synchronism holds. [...] In other words, rotation at ω follows as a consequence of the phase-lock constraint."

**[FN08, 2001]**, as above:
> "The constraint I saw as governing was the need for the aether to keep its synchrony of motion, meaning that the superimposed rotation would not affect the need for each aether charge to keep in step, owing to powerful electrostyatic [sic] interaction forces asserted by the enveloping aether medium. [...] Ω(r + δR) = c/2 + ωR and: Ω(r − δR) = c/2 − ωR I concluded from this that: δR/R = ω/Ω = 2ωr/c [...] δσ/σ = 2δR/R = 4ωr/c and, since: σ = e/d³ we find that: δσ = 4ωer/cd³"

**[Essay 13, "The Crystalline Vacuum", 27 May 1998]** `www-energyscience-org-uk-essays-ese13` | https://aetherscience.org/www-energyscience-org-uk-essays-ese13/
> "each such element of charge describes a small orbit [...] That orbital motion or quantum jitter, as I have called it, ensures that those charges keep in synchronism in their jitter motion. Now, to do that, it works out that they must suffer a slight radial displacement with respect to the spin axis. This is because, if the rotation is in the same sense as that orbital jitter motion, the charges are travelling faster at their outermost positions than they are at their innermost positions and, relative to the centre of charge about which they orbit, they must therefore be displaced inwardly in order that they can stay in synchronous motion throughout their orbital jitter motion. In short, this meant that if, for some reason, there was a radial electric field set up by a concentration of electric charge, then the enveloping aether would develop a spin motion about that charge concentration."

The essay quotes MAS 1972, p. 14:
> "If a spherical volume of the unseen aether medium rotates, it may result in an electric displacement effect radial from its axis of rotation. [...] Rotation of a sphere of aether would then develop a magnetic field."

### 4.4 ESR8 (1996): the aether cancels E but not B; phase-lock supplies the energy of translational displacement

**[ESR8, 1996]** `www-energyscience-org-uk-reports-es8-esr8` | Energy Science Report No. 8, "Power from Space: The Correa Invention" | https://aetherscience.org/www-energyscience-org-uk-reports-es8-esr8/
> "This really is an interesting subject of research, all connected with the evident fact that charge displacement in the aether cancels that electric field but does not cancel the magnetic field!"

On the response to a radial field and to a linear field:
> "Now, how does the medium to which we attribute electromagnetic wave propagation in terms of Maxwell's displacement current respond to a radial electric field? It responds by trying to cancel the plasma charge field, just as it does in a parallel plate capacitor. Nevertheless there is a difference. There the electric field is applied from outside, namely from the electrodes, and the Maxwell displacement, which comprises two separated layers of charge of opposite polarity, simply confronts the charge on the plate electrodes and screens it by placing one polarity charge adjacent one plate electrode and the other polarity charge adjacent the other electrode. In the absence of an electric field vector, the scalar reaction of the aether is to store energy by equipartition between kinetic and electric displacement energy by expanding the radii of the orbital quantized motion of the elements of its aether charge. [...] The aether responds to the field vector mode of a linear electric field displacement by storing energy as electrical field energy. This amounts to an internal strain in the aether [...] Here there is translational motion of the charge system in the aether but no kinetic energy is added to its overall quantum state because the displacement of the charge orbits in local aether regions is affected by synchronizing constraints exerted from external aether regions which assure phase lock. These constraints, rather than the applied electrical field, provide the energy needed to sustain that translational motion. This is why the aether cannot be sensed in terms of the mechanics of linear motion."

### 4.5 Polarisation relative to the orbit plane (1997)

**[RN 11/97, 5 May 1997]** `www-energyscience-org-uk-notes-rn9711` | "End of Science?" | https://aetherscience.org/www-energyscience-org-uk-notes-rn9711/
> "If you now ask how an electromagnetic wave might be affected in its passage across a space domain boundary, you will see that the electric field oscillations can be orthogonal to the orbits of the aether particles or in the plane of those orbits, depending upon their direction of motion through space. In the former situation they will pass through unaffected. However, in the latter situation they will have an energy interaction which affects their intensity on entry through a domain boundary and restores it to its original condition on its exit through a domain boundary."

### 4.6 Spin vector, angular momentum, and E-frame rotation

**[PWE ch. 4, 1969]**, as above:
> "Space-time has angular momentum. [...] Space-time Spin Vector. The universal motion at the angular velocity Ω defines a fixed direction in space. [...] the spin motion at angular velocity Ω, though the same throughout all space in magnitude, may be directed in different directions in the environment of different and widely spaced stellar bodies."

**[PWE ch. 6, 1969]**, as above:
> "the lattice particle constituent in space-time is formed like the atoms in a crystal and can withstand linear force, whereas there is less restraint on the development of spin or rotation within the lattice. [...] The aether, or, more properly, the lattice of space-time cannot withstand turning forces. The fact that it can turn has been the basis of the general account of the photon phenomenon."

**[PU ch. 3, 1980]**, as above:
> "On the other hand, for rotation there is no counterflow and no Fresnel drag, meaning that the E-frame does not rotate. [...] For lattice rotation the vacuum medium should exhibit angular momentum."

### 4.7 Magnetic fields as reacting charge (the aether halves the applied field)

**[PWE ch. 2, 1969]**, as above:
> "it could be that the charge in the aether takes over the role of reacting to cancel half of the magnetic field."

**[RN9804, 1998]**, as above:
> "Apply a magnetic field and a proportion of those charges, just enough to set up an optimum reaction, as determined by maximum energy transfer, will react by assuming a helical kind of motion setting up a reaction magnetic field in opposition to the applied field. This works out as being precisely half that of the primary field."

**[Lecture 4, 1997, quoting 1959–66 work]** `www-energyscience-org-uk-le-le04` | https://aetherscience.org/www-energyscience-org-uk-le-le04/
> "there is, traveling through the Earth, an abundance of free lattice particles which are constrained to move in opposition to the Earth's motion in its orbit. The magnetic effect of these particles cancels exactly the magnetic effect of the matrix particles in their travel with the Earth in its orbit. Consideration shows that there is also balance of linear momentum in such a system. However, these free particles do not rotate with the Earth. They are free to a limited degree to cancel the electrostatic effects of the induced charge [...]"

The same lecture: "an all-pervading plasma which we have termed the 'aether'".

### 4.8 Slow versus fast fields

The texts already quoted say:
- **Zero frequency.** "at zero frequency the counter-displacement state [...] is wholly balanced against any forward displacement" (Lecture 10 Appendix, 1986/87). "any displacement of electric charge in the vacuum must be transitory and oscillatory, unless it is balanced by a matching counterflow or reverse displacement" (Lecture 24, 1982).
- **Radio and optical frequencies.** The counter-displacement is "partial, though nearly equal". E₁ ≈ E₂ and K = (f/f₀)² ≪ 1 (1984e; TU18).
- **Compton frequency.** "no reverse motion of the secondary structure" (Lecture 24, 1982). A photon unit at exactly Ω/4 produces "no electromagnetic wave propagation since a little local adjustment of the E frame can contain the disturbance" (PWE 1969 ch. 4; PU 1980 ch. 5).
- **Response time.** "The field medium has a response time of the order of 10⁻²⁰ s" (1986/87).
- **Static fields.** Static linear E: the orbit centres shift and, for synchrony, there is a drift perpendicular to E (POC 2003; doubted for parallel plates in 2002). Static radial E: vacuum spin (1959 onward). Steady magnetic fields: a reacting charge field that halves them (1969 onward).

### Reading

Aspden's lattice has gyroscope-like responses built in. They come from one rule: every orbit must stay in phase with the surrounding aether, with the "phase-lock" enforced by "very powerful electrostatic forces" from the enveloping medium. From this rule:
- translation shifts the orbit centres **perpendicular** to the velocity, in the orbit plane, producing a lateral electric field (1987);
- a static E produces a drift at right angles to E (POC 2003);
- a radial E produces rotation, and rotation produces radial charge (vacuum spin);
- the jitter has a spin axis (the direction of Ω), the orbits are "two-dimensional", and a wave whose E is normal to the orbit plane "pass[es] through unaffected" (1997).

These are the only texts in the corpus that imply an anisotropic, gyrotropic response of the lattice. **None has been carried into a wave equation**, and the polarisation statement is qualitative.

**Testable equations.** 1987b eqs. (5)–(12): the lateral shift δ and the energy fraction ¼(v/c)². Lecture 26 eqs. (1)–(3) and FN08: δN/N = δσ/σ = 2ω/Ω = 4ωr/c, a charge density induced by rotation. These are explicit and could be compared with a self-consistent model of quons in a rotating frame. The phase-lock force is never written as a force law.

---

## 5. Space domains: size, rotation, boundaries, and light at domain scale

### 5.1 Planar boundaries are required for the restoring force 4πσq (1983)

**[1983k, Lett. Nuovo Cimento 38, 243 (15 October 1983)]** `pdf:www-aspden-org/papers/bib/1983k` | "Planar Boundaries of the Space-Time Lattice" | https://aetherscience.org/www-aspden-org/papers/bib/1983k.pdf
> "With a uniform electric field of intensity E applied we find that the charges q will all be displaced in unison to satisfy (2) Eq = kx, where k is a constant restoring force rate and x is displacement. In effect, the whole lattice is displaced relative to the background continuum. [...] as this is E²/8π, for a vacuum of unit permittivity, we find that k is given by (5) k = 4πq²/d³ = 4πσq [...] However, a problem emerges upon analysis of radial displacement of a charge q within an arbitrarily spherical bounded system. [...] This is simply (4π/3)σx. It follows that if q is part of a rigid lattice which is displaced as a whole by the distance x within the bounding spherical continuum, then the lattice is subject to restoring forces which are only one-third those expected from eq. (5). [...] It follows that, provided the boundaries of the continuum space domain are planar we will have conformity with the normal energy density formulation. Conversely, since the energy density has to be that known from experimental observation, we can say that a lattice-structured space of the kind described must have planar boundaries, a feature which further enhances the analogy with the ferromagnetic state. [...] One consequence of the latter possibility is the prospect that electric polarities of lattice charge and continuum may be reversed in adjacent domains, a kind of antispace analogous with antimatter. Alternatively, there may be a harmonius cyclic motion which is shared by the lattice, but which is reversed in adjacent domains."

On propagation delays:
> "It is also relevant to note that, if the lattice displacement in the structured vacuum were subject to propagation delays, the analysis would present the conflict discussed above because the symmetrical propagation would imply spherical boundary action. The answer to this could be that lattice displacement which involves no lattice distortion keeps the relative spacings of all charges unchanged and so the energy associated with their interaction is not affected. If no energy is transferred, then the action appears to be one of harmonius motion and what may otherwise be taken to be an action at a distance."

The sphere value of one third is exactly Part 1A §4.1 and §4.4 (line 7, `0.33333`). The planar-slice value of 4πσ is Part 1A §4.5. Aspden thus locates the "uncovered continuum" field at the domain's planar boundaries.

**[RN 11/97, 1997]**, as above, on Professor L. H. Thomas (1966–67):
> "when I later sat down to struggle with this issue and imagined a lattice charge system to be displaced within a spherically-bound aether I got an energy density result for field energy storage that was only one third of the true value. To get the right answer the boundaries of the electrical charge system of the aether had to be set by mutually parallel planes. The aether had to be 'sliced' [...] on one side of a boundary, the aether particles have positive polarity and occupy a negative charge continuum, whereas on the other side of the boundary the aether particles have negative polarity and occupy a positive charge continuum. [...] the aether particles describe tiny orbits about the charge centres to which they are attracted. They also move in synchronism and, as seen in motion in the planes of their orbits they can all describe those orbits in either a clockwise or an anticlockwise sense. Here, then, was the clue needed to interpret the other boundary forms."

The note also contains the polarisation statement quoted in §4.5.

**[Lecture 12, 1998]** `www-energyscience-org-uk-le-le12` | https://aetherscience.org/www-energyscience-org-uk-le-le12/

The derivation using a planar slice parallel to the domain boundaries:
> "Our object is to determine the force acting on a charge at P and attributable to a planar slice of the background charge continuum distant y from P. That planar slice is parallel with the space domain boundaries of the domain region in which P is located. [...] Together these amount to a restoring force acting on the unit charge of 4(pi)q per unit charge per unit distance of displacement."

**[Lecture 21, 1998]** `www-energyscience-org-uk-le-le21` | https://aetherscience.org/www-energyscience-org-uk-le-le21/
> "The difference is one connected with an underlying asymmetry of the polarities assigned to the vacuum charge which accounts for Maxwell's displacement currents, the carriers of electromagnetic waves. [...] However, I need planar interface boundaries between these domains in order to obtain the necessary homogeneous mathematical relationships governing restoring force rates when aether charge is displaced"

**[Aether Science Papers, pp. 26–32, 1996]**, as above:
> "The planar boundaries are absolutely essential to assure the restoring force rate as universally applicable to displaced aether charge [34]."

### 5.2 Size and rotation

**[PU pp. 170–172, 1980]** `book-physics-unified-pu13to19of8` | https://aetherscience.org/book-physics-unified/book-physics-unified-pu13to19of8/
> "The data in Fig. 40 suggest a domain cube size of about 400,000 years at the [footnote and figure caption omitted] Earth's speed through the space system. At 390 km/s this gives a domain cube size of about 500 light years."

**[POC ch. 8, 2003]** `book-physics-of-creation-2nd-ed-2edpocch8` | https://aetherscience.org/book-physics-of-creation-2nd-ed/book-physics-of-creation-2nd-ed-2edpocch8/
> "we then find that D is 4.6×10²⁰ [OCR "10°°"] cm or 480 light years. If the Sun was created within a cubic space domain one would expect its cube dimension to be of the order of 760 light years [...] I would have liked in this section on space domains to be able to explain what, on an ab initio basis, determines the size of such a space domain. That is a problem I have not solved"

**[POC ch. 6, 2003]**, as above:
> "There may be space domains measured in dimensions of many light years and within which Ω is unidirectional. Yet its direction may vary from one domain to the next. [...] the essential difference between two adjacent space domains is the fact that in one the proton has a positive charge and the electron a negative charge, with the continuum charge positive and the quon charge negative, whereas these charge polarities are all reversed in the other space domain."

**[POC ch. 7, 2003]** `book-physics-of-creation-2nd-ed-2edpocch7` | https://aetherscience.org/book-physics-of-creation-2nd-ed/book-physics-of-creation-2nd-ed-2edpocch7/
> "we do not expect the synchronous character of the lattice particle motion to hold beyond the range of the boundaries of vast space domains of the aether"

**[FN04, 9 November 1998]** `www-energyscience-org-uk-feedback-fn04` | "Aether Structure Feedback from Allyn M. Shell" | https://aetherscience.org/www-energyscience-org-uk-feedback-fn04/
> "since the whole aether charge lattice within a space domain moves in unison in sustaining the rotation component of motion about the inertial frame at the Compton electron frequency, the energy constraints which arise as a function of the lattice structure are solely dependent upon the boundary conditions. Such boundaries between adjacent space domains are separated by distance measured in light years. For that reason I have inclined to the view that the spin axis in a space domain can have any orientation relative to the prevalent lattice structure [...] I have introduced three separate axes of spin pertaining to the physics prevailing inside body Earth, one being that of the matter forming Earth, one being that of the aether sphere rotating inside body Earth and one being the axis of the ultra-fast aether particle motion that prevails throughout the local space domain"

**[1986a, Spec. Sci. Tech. 9, 315 (1986)]** `pdf:www-aspden-org/papers/bib/1986a` | https://aetherscience.org/www-aspden-org/papers/bib/1986a.pdf

On microdomains:
> "They form into a structure and tend to share the motion of coextensive material energy forms, but at the boundaries of microdomains the charges can mutually annihilate with the corresponding amount of charge in the continuum and shed energy which is transferred into a background of muon charge pairs."

### Reading

Space domains are cubic, roughly 500–760 light years across. In adjacent domains either the polarities of lattice and continuum are reversed, or the sense of the jitter (the direction of Ω) is reversed, or both. Within a domain the whole lattice jitters in phase.

Aspden's technical reason for domains is the 1966–67 objection by Thomas. A uniformly displaced lattice in a spherical boundary has only one third of the needed restoring force, and planar boundaries give the full 4πσq. In Part 1A's terms, he is saying that the restoring force is the depolarisation field of the uncovered continuum, which depends on the shape of the boundary. He also proposes that undistorted lattice displacement acts "at a distance", without propagation delay.

On light at domain scale he says only two things:
- crossing a domain boundary affects the intensity of waves whose E lies in the orbit plane, and not of those with E normal to it (1997);
- starlight is refracted at the boundary between the Earth's aether and the surrounding aether (PWE 1969).

**No equations** are given for light at domain boundaries.

---

## 6. Plasma, cutoff, screening

### 6.1 The aether as a plasma

**[Essay 13, 1998]**, as above:
> "The 'vacuum medium', otherwise known as the 'aether', is a cold neutral ionized plasma that has such a perfect crystalline form that it cannot be 'seen' or 'felt' as a medium resisting force. In fact it responds so easily in its reaction to invasion by matter that it dissolves its structure and reforms that structure in the wake of matter that does move through it. [...] the aether is a cold plasma, essentially of that 'OCP', one component plasma, form and it has the one structure which corresponds to least electric energy potential, provided that potential is a little greater than zero everywhere."

**[Lecture 4, 1997]**, as above: "an all-pervading plasma which we have termed the 'aether'".

**[POC ch. 9, 2003]** eq. 9.17, as above: "the system has a resonant mode at frequency given by the angular velocity: ω² = 4πNoe²/m".

### 6.2 Aspden's statements that the lattice displacement cancels or screens fields

- PU ch. 2 (1980): "the electric field of the charge e has, at least in the main body of the space medium where there are charges q, been cancelled by displacement of this electrical medium. Here then is the basis for the displacement currents".
- ESR8 (1996): "charge displacement in the aether cancels that electric field but does not cancel the magnetic field!" Also: the Maxwell displacement "simply confronts the charge on the plate electrodes and screens it".
- Lecture 26 (1996): the aether "will develop a charge displacement to neutralize that core charge and effectively transfer the charge effect to the surface of the sphere".
- 1987b: for a rotating lattice "the electric field in this case is merely balanced by charge displacement in matter".

**[Essay 7, "G and Peer Review", 1998]** `www-energyscience-org-uk-essays-ese07` | https://aetherscience.org/www-energyscience-org-uk-essays-ese07/
> "if subject to an electric field, such as the radial field set up by the charge (1), it could well respond to exhibit a neutralizing radial electric field by a kind of displacement conforming to Maxwell's equations."

### 6.3 Why something does *not* obstruct light

- 1984e, also POC 2003 ch. 8: "The electron-positron pairs will not obstruct the passage of electromagnetic waves because they have a mutual inertial balance and are collectively neutral in their response to electric fields."
- 1984e: the vacuum is "otherwise a transparent and wholly ordered medium".
- POC ch. 8: "its overall transparency is only slightly blemished by this activity".
- Lecture 10 Appendix: "the basic symmetry of the primary vacuum medium to which it owes its transparency must be broken to create field substance sustaining the magnetic energy condition."

### 6.4 What is absent

The search covered plasma, cutoff, screen, shield, Debye, skin depth, opaque, block and reflect. **No text computes or mentions a plasma frequency of the quon lattice as a cutoff for light.** No text explains why a test charge placed beyond the displaced lattice still feels the unscreened Coulomb field. The closest is the PU 1980 line that "remote actions balance anyway owing to the large scale distortions of the lattice structure governed by the charge e and boundary conditions". The frequency 4πσe/m₀ (PWE 6.34; POC 9.17) is always treated as the resonance of a **bound** oscillator, with "restoring force" and "natural frequency". It is never treated as a collective plasma mode with a stop band below it.

### Reading

Aspden knew the aether was a one-component plasma, and he wrote down its plasma-frequency formula, calling it a resonant mode. In several places he says the lattice displacement cancels or screens the field of a charge inside the medium. In 1980 he presented this cancellation as the very basis of the displacement current. He did not draw the consequence for a distant test charge or for low-frequency waves. Where screening appears, it is presented as a feature: the aether neutralises space charge and matter cannot sense its electric field, only its magnetic effects.

His only stated "non-obstruction" principle is for e⁺e⁻ pairs: they are "dynamically balanced and collectively neutral". It is asserted, not derived, and he does not apply it to the quon–continuum pair.

**No testable plasma equations** are given, beyond the formula itself.

---

## 7. Equations Aspden gives that bear on wave propagation in the aether

| Source | Equations (numbers as printed) | What they say | Testable as wave propagation? |
|---|---|---|---|
| PWE ch. 6 (1969), pp. 99–106 | 6.8–6.22 (Maxwell; V_y = f₁(x − ct)); 6.23 m ÿ + ky − eV_y = 0; 6.24 V_y = V₀y − 4πNey; 6.27 k = p₀²m; 6.31–6.33 v = c√[1/(1+φ)], φ = 4πNe²/m(p₀² − p²); 6.34 4πσe = p₀²m₀; 6.35–6.39 energy medium, v₀ = √(P/ρ₀), m₀ = e²/3bc² | Lorentz-oscillator lattice. The vacuum's "1" is the lattice φ at p ≪ p₀, with p₀ = Ω/√2 | **Yes.** ε(ω) = p₀²/(p₀² − ω²): Part 1 reading B, U12–U14 |
| PWE ch. 4 (1969) | 4.1 r = h/4πmc; 4.2 Ω = 2πmc²/h; **4.3 ν = 4ω/2π, with ω the offset from Ω/4** | Photon unit; radiation at 4 × the offset from the standard rotation; none at Ω/4 | Partly. It is a frequency rule, not a propagation law |
| PU ch. 2 (1980) | 37–40 (4πσqD; V²/8π); 41–45 (CB/CA = kv/c; V = (kev/r²c) sin θ, k = 2) | Displacement current; magnetic field = uncompensated field from ½c retardation | Partly. Predicts a primary field twice Ampère's, halved by reaction |
| PU ch. 3 (1980); TU18 (1999) | 57 (Jones drag), 58 n² = 1 + φ, **59 c₁ = (P/ρ)^½**, 60 n = c/c₁, 61 uk + v(1−k) = 0, 62 n² = 1 − k, 63 u(1 − 1/n²) = v; TU18: 1/n = 1 + k/2, k = −v/u, c/n = c − vc/2u | Fresnel drag by counterflow; light referenced on the moving lattice | Yes, for the frame (Part 1A §13.5). Not for dispersion |
| PU ch. 5 (1980) | 86–93 (orbit); 97–104 (E = hν); **109 ∇²A + (4π²ν²/c²)A = 0** | Uses the standard non-dispersive wave equation | Assumed, not derived |
| POC ch. 6 (2003) | 6.1–6.4 (4πσqD, V²/8π); 6.5–6.6 (orbit, r = h/4πmₑc); **6.7 (c/v)² = 1 + φ**, with the "unity" = aether φ | Points back to PWE pp. 102–104 | As PWE |
| POC ch. 9 (2003) | 9.15 Ne = σ; 9.16 N = N₁ + N₂; **9.17 ω² = 4πN₀e²/m ("resonant mode")**; 9.18 c₁ = (P/N₁m)^½; 9.19 vN₁ + uN₂ = 0; 9.20 n = c/c₁ | Primary quons plus secondary muon counterflow; drag | Frame only. 9.17 is the plasma frequency, called a resonance |
| Wireless World (1982) / Lecture 24 | natural-frequency formula (missing from the web text) | Natural frequency at the Compton frequency | — |
| 1984e (1984); Lecture 11 (1998); TU18 (1999) | **(3) E = E₁ − E₂** (Lecture 11: E₁ + E₂); **(4) dE/dt = (E₁ − E₂)F(E₁/E₂)**; **(5) f² = kν², k = E/E₁ = 1 − E₂/E₁** (TU18: K = (f/f₀)²); **(6) (1/f)df/dx = (1/4W)dW/dx** | Codification of frequency by two field components; frequency loss = ¼ energy loss | No dynamics. Only (6) is testable (redshift) |
| Lecture 10 Appendix (1986/87); TU12 (1999) | (1)–(2) standard Maxwell; **(3) (j/c)dE/dt = curl H, (4) −(j/c)dH/dt = curl E** | "Natural" mode with E and H in quadrature | Claims propagation at c with no energy transport; no dispersion relation |
| TG ch. 8 (1960) | **(39) 4πσex = Ve**; x₀ = h/2πmc; critical field 2.21×10¹³ esu | Maximum field "which cannot be exceeded in a wave propagation" | **Yes.** About 6.6×10¹⁷ V/m |
| 1983k (1983) | (1) q = σd³; **(2) Eq = kx**; (3)–(4) energy; **(5) k = 4πq²/d³ = 4πσq**; sphere gives (4π/3)σx | Restoring force needs planar boundaries | Yes. Matches Part 1A §4 |
| 1987b (1987) | **(5) ρΩ² = 2k; (6) E = (2ρΩr²)Ω; (7) x² = (2r)² + δ² − 2(2r)δ cos θ; (8)–(12)**; energy fraction ¼(v/c)² | Lateral orbit shift under translation | Yes, in principle (clock rates) |
| Lecture 26 (1996/99); FN08 (2001) | **(1) 8πN²e² = ρΩ²; (2) 8π(N − δN)e² = (ρ/N)(Ω − ω)²; (3) δN/N = 2ω/Ω**; FN08: Ω(r ± δR) = c/2 ± ωR, δR/R = ω/Ω = 2ωr/c, δσ = 4ωer/cd³ | Vacuum spin from phase-lock | Yes. Induced charge versus rotation |
| FN08 (2001) | 4mvr = h/2π; v/2πr = mc²/h ⇒ v = c/2 | c/2 derived | Consistency only |
| Lecture 12 (1998) | (1) (qA/x²) cos β dy; (2) qS dy ⇒ 4πq restoring force | Planar-slice derivation | As 1983k |

**No source gives coupled equations of motion for the quon lattice together with a second system (continuum, muons or gravitons) under an applied wave field.** Part 1A §6.7 noted this, and the full search confirms it.

---

## 8. Contradictions between works and dates

1. **Who does the counter-displacing.**
   - 1982 (Wireless World): "secondary structure", unnamed, "moves through the primary structure in the reverse direction".
   - 1986/87: "two constituents in the field medium".
   - 1990s commentary on 1982a: "the muon energy sea", "a muon field".
   - TU18 (1999): "virtual muons as well as gravitons".
   - POC ch. 9 (2003): "muons".
   - The c/2 G-frame continuum is never named. In POC ch. 6 the continuum "shares any translational motion of the quon lattice", and the muons do the balancing.
2. **Sign in eq. (3).** E = E₁ − E₂ in 1984e and TU18. E = E₁ + E₂ in Lecture 11, the 1998 reproduction. TU18 reconciles them by saying E₂ "is a negative quantity".
3. **Natural frequency of the lattice.**
   - The Compton frequency (Ω/2π): Wireless World 1982; 1984e (f₀ = ν); TU18; Lecture 26 eq. 1, which uses 8π and both frames.
   - p₀ = Ω/√2, with the continuum fixed: PWE 6.34 ("p₀ is not equal to Ω"); POC 9.17 (4πN₀e²/m).
4. **Status of c/2.**
   - Postulate: TG 1960, "will equal the propagation velocity c", with the 1998 note "assumed to be the speed of light"; TU06 "will be assumed to be c"; POC 2003 "a likely candidate".
   - "To account for its uniform dispersion" (magnetic self-cancellation of the continuum): PWE 1969 ch. 5 and ch. 6.
   - Dirac: TU08 1997; PU 1980.
   - Derived from Heisenberg and the Compton frequency: FN08 2001. In PWE 1969 ch. 4, Heisenberg is "used here merely to estimate r and Ω", with ½c assumed. PWE also promises that "later, it will be proved that c is the relative velocity of the E and G frames"; Part 1A §1.2 found no proof.
5. **Is the continuum magnetically active?** PWE 1969 ch. 5: yes; "it has its own mutual magnetic interaction which exactly cancels its mutual electrostatic action". TG 1998 note: "the continuum charge σ, though moving relative to the electromagnetic reference frame, could not produce a magnetic field". TU06 and TU20 transfer the "electrodynamic cancels electrostatic" role to the gravitons.
6. **Half-speed propagation.** PU 1980 ch. 2: the q-charge disturbance propagates at ½c, "not to be confused with the propagation of electromagnetic waves or electric field disturbance". PU ch. 9 then ties that ½c to the lattice particles' orbital speed and to c. PWE 1969: electric field propagation is at c, in the energy medium around the lattice particles.
7. **How light speed scales with density.** c₁ = √(P/ρ) ∝ ρ^−½ (PU 1980; TU18; POC 9.18). In the same POC 2003 passage, "the propagation velocity is proportional to (N₀e²/m)^½", which grows with density. Lecture 24 (1982): light speed "depends upon electron density and the oscillation period".
8. **Photon unit spin axis.** TG 1960: "The axis of group rotation is perpendicular to the planes of the particle orbits. This is essential for momentum balance." PWE 1969 and PU 1980: "Any axis [...] does not have to be parallel either with the direction of the Ω motion".
9. **Photon frequency rule.** PWE 1969 eq. 4.3: ν = 4 × (offset from Ω/4)/2π. PU 1980 eq. 102 and TU08 1997: 4ω = 2πν with ω the absolute rotation rate. PWE and PU both keep "no propagation" at Ω/4.
10. **Magnetic field in free space.** PWE 1969 uses standard Maxwell (6.15–6.22). Lecture 10 Appendix (1986/87): H "may be a notional field". RN9804 (1998): "there is no such thing as a magnetic field out there in free space". POC 2003: the magnetic energy is quon kinetic energy.
11. **Restoring-force origin.** PWE 1969 treats k = 4πσe as a per-particle spring. 1983k (1983) shows that k = 4πσq for a uniformly displaced lattice depends on planar boundaries, one third for a sphere. That is a collective, boundary-dependent field, which is Part 1A's reading.
12. **The capacitor drift.** Asserted in POC ch. 9 (2003; dated "nearly 50 years ago"). Doubted for parallel plates in the Lecture 27 notes (28 April 2002).
13. **The Earth's counterflow.** TG 1960: free aether particles at about c. PU 1980: migrant q charges. TU18 1999: quons at c/2. POC 2003 and RN9804: muon pairs.
14. **Hubble figures in 1984e.** Original: frequency time constant 3.6×10¹⁷ s (11,400 Myr). Lecture 11 (1998): 4.5×10¹⁷ s (14.3 Gyr), after a factor-4 reduction of the absorbing cross-section. Appendix II of POC 2003 instead argues for one half of the Thomson cross-section.

---

## 9. Strongest textual basis

### (a) The counter-motion makes the vacuum transparent (non-dispersive) at low frequencies

The best texts all concern the **dual displacement**, not the c/2 orbit:
1. **Lecture 24 / Wireless World 1982:** "Oscillations of the electrical structure of the vacuum can occur at the resonant Compton electron frequency with no reverse motion of the secondary structure or counter-displacement. However, we may expect light propagation at lower frequencies to involve counter-displacement [...] With it comes a solution to the dispersion problem."
2. **Lecture 10 Appendix, 1986/87:** "at zero frequency the counter-displacement state [...] is wholly balanced against any forward displacement [...] in radio propagation we are concerned with the lateral displacements and these always have a partial, though nearly equal, electrical counterbalance displacement. Only at ultra high frequencies does this counter displacement become small, being zero at the threshold at which electrons and positrons are created."
3. **1983j:** "a reciprocal displacement to provide a partial dynamic balance offsetting the normal Maxwell displacement and so causing the natural resonance of the medium to adjust automatically to the frequency of the signal in transit."
4. **1991a:** "a restoring force rate that adjusts in compliance with the frequency to give perfect resonant response."
5. **TU18:** K = E/E₁ = (f/f₀)², "seated in different systems of charge [...] virtual muons as well as gravitons."

Caveats:
- The secondary system is the muon sea, not the continuum.
- The aim stated is non-dispersion, not escape from a plasma cutoff.
- No equations of motion are given.
- The c/2 orbital counter-motion is never invoked for this.

### (b) Light carried by the continuum rather than the lattice

The textual basis is **weak, and mostly contrary.**
- *Against:* PWE 1969 ch. 6, "the G frame moved in a fixed orbit. This was consistent with the charge density σ remaining uniform. Wave disturbance, therefore, no doubt involves displacement of the particle lattice"; "Electromagnetic waves are carried by the lattice constituent of space-time." Also PWE 1969 ch. 4, PU 1980 ch. 3 and ch. 5, RN9804 1998 and POC 2003 ch. 9 ("the speed of light c1 set by the primary structure [...] the quons").
- *Partial support:*
  1. PWE 1969 ch. 6: "Electric field propagation at the velocity c occurs in the medium which surrounds the lattice particles", and near Ω "Propagation at such high frequencies involves another mechanism [...] through the medium separating the lattice particles". This is a pressure or energy medium, not explicitly σ.
  2. TG 1960: "the disturbance is propagated relative to the aether particle system or the continuum".
  3. PWE 1969 ch. 5: the continuum, at relative speed c, has its mutual electrostatic action "exactly" cancelled magnetically. It is internally force-free, which a model might exploit, but Aspden draws no wave consequence.

### (c) Other mechanisms he proposes

1. **Synchronising constraint, or phase-lock, from the enveloping aether.** ESR8 1996: "These constraints, rather than the applied electrical field, provide the energy needed to sustain that translational motion. This is why the aether cannot be sensed in terms of the mechanics of linear motion." Also PU 1980 ch. 5 ("extraneous fields which resist any distortion of this synchronous state [...] only two degrees of freedom"), 1987b, Lecture 26 and POC 2003 ch. 9. This is the nearest thing in the corpus to the extra force law Part 1A §6.7 says would be needed. It is a collective, non-local constraint acting on quon orbits, and it has gyroscopic consequences: lateral shift under translation, drift perpendicular to E, and vacuum spin under radial E. It is never written as a force.
2. **A self-tuning resonance or LC cell.** Lecture 24, ESR4 and 1991a.
3. **Natural (quadrature) versus forced waves**, with symmetrised Maxwell equations. Lecture 10 Appendix 1986/87, TU12 1999, Lecture 3 and Lecture 10.
4. **The photon as an offset from the universal rhythm.** PWE 1969 eq. 4.3: radiation at 4 × (ω − Ω/4); "no electromagnetic wave propagation" at the Compton rhythm itself.
5. **Planar domain boundaries plus action at a distance** for undistorted lattice displacement (1983k). The restoring force is a boundary effect, and propagation delays would conflict with it.
6. **A separate energy medium** around the lattice particles carrying inverse-square fields at c, which the lattice converts into Maxwell waves (PWE 1969 eqs. 6.35–6.39).
7. **Orbit-plane anisotropy.** A wave with E normal to the jitter plane "pass[es] through unaffected" (RN 11/97).
8. **Non-obstruction by "mutual inertial balance"** of neutral pairs (1984e), asserted for e⁺e⁻ pairs only.