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December 06, 2018

Comments

stu senator

An analog mechanical movement watch is controlled by an escapement movement that moves all the hands in a step movement. If I remember it is something like 5 ticks a second on most older watches. A modern electric analog dial watch is most probably driven by a step motor controlled by the electronics.

A copier feed is also driven by a step motor so there is a beat frequency between the two that you are seeing. The copier is also moving linearly and the watch is driven circularly to further confuse the matter.

Stu

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