That big grandfather clock in the library might be an impressive piece of mechanical ingenuity, and an even better example of fine cabinetry, but we’d expect that the accuracy of a pendulum ...

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 ...

A SHORTT free pendulum clock has recently been installed at the Science Museum, South Kensington, and is now at work controlling the main public dials of the Museum. The Shortt clock was perfected ...