On 11/4/2024 11:26 AM, William Prescott wrote:
Electrons move very slowly in copper, about 1 cm/sec. The question is the
signal speed in copper, which is about half the speed of light. I got this from
a couple searches in DuckDuckGo. Light in fiber is probably closer to the
vacuum speed of light.
Will
The speed of light in the fiber will be speed in vacuum/refractive index
of the material of the fiber.
For example, if a glass light tube, the refractive index being ~1.5, the
speed of light would be 2/3 of the speed in vacuum.
Michael D Novack
PS -- And yes, I meant the speed of the electron wave in the copper.
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