On Thursday, June 28, 2012 2:46:10 AM UTC-5, Szczepan Bialek wrote:
In telegraph wire the electrons travel (as the disturbance) with the speed
of light.

The "disturbance", which is a DC transient condition, has been proven by measuring instruments to consist of photons. All AC, RF, and transient (disturbance) DC phenomena (within a telegraph wire) involve photons that are emitted and absorbed by electrons, which act as a sort of bucket brigade for the photons. If something travels at the speed of light in the medium, it cannot be an electron. A single electron, traveling at the speed of light, would collapse the universe.
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73, Cecil, w5dxp.com