Brought to you in cooperation with the Musée des Arts et Metiers - Paris.
The principle of operation of all mechanical clocks rests on the combination of the following three functions:
Escapements generally use an anchor, as shown in this animation. For small angles (<5°) of oscillation of the pendulum, one approaches the condition of isochronism: the pendulum's period depends practically exclusively on local gravitational conditions and the length of the pendulum (bit not on either the mass of the pendulum or the amplitudes of its oscillations). For example, in Paris, a meter long pendulum has a period of two seconds. Lengthening the pendulum increases its period of oscillation.
Click and drag the slider to modify the period of the pendulum.
Wind up the clock by lifting the weight.