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Single-Particle Electrodynamics - Assassination Science

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performed the electric charge radiation reaction calculations, fully relativistically,<br />

and then again when he wrote the program radreact to compute<br />

the dipole results, he did not correctly Thomas-precess the constituent’s position<br />

r as seen in the lab frame, as now described in Chapter 3; rather, the<br />

vector u(τ) was effectively fixed. This subtle error of philosophy was not<br />

detected until the program was fully completed and debugged. When the<br />

calculations were suitably repaired, it was found that the changes carried<br />

through to three orders of terms in the trajectories of the constituents. This<br />

had consequential changes on about a third of all terms appearing in Section<br />

G.6! These changes carried right through (literally) ninety-nine pages of<br />

expressions. Then, in the final equations only, all of these changes cancelled<br />

out completely! The author was not prepared for such an outcome.<br />

The author believes this phenomenon may be explained as follows. By<br />

essentially “rotating” the body as it began to move, the trajectory of any<br />

particular constituent was modified. But, taken as a whole, the relevant<br />

properties of the body still seemed to act the same as they would have without<br />

rotation, perhaps because as one constituent rotated out of position,<br />

another came to fill its place. This clearly is not correct physically, but it<br />

was probably correct mathematically by virtue of the other underlying assumptions<br />

of the author based on the assumption that the body did remain<br />

non-rotating. Regardless, the results magically returned to their original<br />

form on the hundredth page.<br />

That this behaviour casts a favourable outlook on the computer algebra<br />

computations follows from the fact that, regardless of the exact reason why<br />

the results were mathematically invariant, the fact that the computer algebra<br />

program did in fact return us to the same answers, after ninety-nine pages<br />

of differences, shows that it must be computing at least something robustly;<br />

and from the relative simplicity of the results, one would suspect that this<br />

something might well be physical reality. Of course, this is not to say that<br />

there are not other completely different contributions to the equations of mo-<br />

294

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