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On May 31, 5:28*pm, Cecil Moore wrote:
Bruce W. Ellis wrote: The actual mean drift velocity for electrons at any reasonable curent is quite low because there are so many of them in the conductor. However, the electric wave driving them propagates at he speed of light appropriate for the medium. The electrons move hardly at all at RF/AC frequencies. On the average, they tend to oscillate mostly in place. What travels at the speed of light are the photons emitted by the oscillating electrons. The electrons form the equivalent of a "bucket brigade" for the photonic wave energy. -- 73, Cecil, IEEE, OOTC, *http://www.w5dxp.com Gentleman, People are so glib when they speak of the speed of light. When a time varying current is applied to a conductor there are several reactances involved by that conductor. One of them has the same characteristic speed which is often attributed to light. It is this characteristic speed of an item that impacts another item and thus imparts the same speed to that which is impacted. Obviously that which is impacted is responsible for the emission of light when it enters a resistive medium as latent energy is distributed during the transition from potential to kinetic energy. It also posseses a charge which is accellerated! Does that ring a bell? I suggest you investigate the speed of capacitor discharge first to see if that is possibly the instigator of such high speed and move on from there Art |
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