We'll start with a few general notions on the theory of oscillations and the study of the disturbing elements that can affect them.
A timepiece allows you to tell the time at any given moment by means of a hand moving in front of a dial. It's difficult to give the hand a rigorously uniform movement, so the motor driving the hand is usually regulated by an oscillator. The latter enables the hand to rotate in jerks, at each oscillation, by a determined angle proportional to the duration T
0
foreseen for the oscillation. The time indicated after n oscillations is :
H = n T
...
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You can easily identify them thanks to this pictogram:
Electric clocks
