Mystery clocks have been popular since the 18th century. The clock seems to have no mechanism but keeps time. One of the most famous is the swinging-arm clock. A tall classical figure, usually bronze, ...

Clocks have been made in forms that depend on the size and shape of the clock's mechanism. The 18th-century tall case, or grandfather, clock was made to hold a long pendulum. In 1816, Eli Terry ...

Would you believe a pendulum clock that can keep time accurately to within one second per year? If you answered “yes”, you’ve either never tried to regulate a pendulum clock yourself, or you already ...

The tick-tick sound comes from the movement of gears and parts inside the clock. In mechanical clocks, a part called the escapement mechanism controls this sound.