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, ...

In the 17th century, Christiaan Huygens, inventor of the pendulum clock, noticed a curious phenomenon. When two identical pendulum clocks are mounted next to each other on a wall, their swings ...

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 familiar tones of the Westminster Chimes melody float across campus, followed by a short pause. At this time, Stanford students of the early 1900s would have pulled out their pocket watches, ready ...

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 ...

John Harrison, one of the world’s greatest clockmakers, claimed to have designed the perfect pendulum clock in the mid-18th century. Instead of being celebrated, Harrison’s plans were chastised and ...