Comment 512Q8 Must be measuring electon drift

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Electric current at record speed, thanks to lasers

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Must be measuring electon drift (Score: 0)

by Anonymous Coward on 2020-03-22 11:24 (#512Q8)

Voltage = Current * Resistance.
Change in voltage moves at the speed of light of the material used (therefore, so does change in current). For example, copper's speed is about 1/10 the speed of light in a vacuum.
"The detected electric currents are approximately one million times faster than those widely used in a modern computer processor."
The current is not moving at 100,000c.
On the other hand, electron drift for copper is 23 μm/s. So approx. 1 million times faster would be about 23 m/s.

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