How do analog clocks/watches tick at exactly a second?

Question

How do analog clocks/watches tick at exactly a second?

In: 6

Answer 1

When the pivot of a wheel that is free to spin is secured to the centre of a coiled leaf spring, the wheel will oscillate back and forth at a predictable, and very steady rate.

Special mechanisms called escapements restrain a spring driven clock movement, advancing it incrementally with each oscillation of the wheel (called a balance wheel). During each oscillation, the escapememt transfers a little energy from the movement it restrains to the balance wheel, which sustains the balance wheel’s operation.