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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 |
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