Hang two pendulum clocks on the same wall, and over time, something strange will happen: the two clocks will tick in synchrony. Renowned Dutch scientist Christiaan Huygens, the inventor of the ...

Christiaan Huygens was a busy scholar. Among his many achievements, the Dutch scientist figured out the shape of Saturn's rings and discovered that planet's largest moon, Titan. He founded the theory ...

Two professors at the University of Lisbon say they have discovered why the pendulums of clocks set on the same surface will eventually swing together in opposing directions. And now a vexing problem ...

As a rule, Donald Saff doesn’t collect clocks he can’t see inside of. It’s the harmonic entanglement of gears—and the skill needed to craft them—that first lured him to horology, the study of ...

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

What a makes a good clock? Andrew Ludlow, a physicist at the National Institute of Standards and Technology, says one of the most important criteria is stability. "If you could imagine a grandfather ...

You probably have seen a “swinger” clock but never guessed how it worked. Most are small metal statues standing on a base while holding a long baseball bat, pendulum or other long, thin rod that is ...

Here’s how to build a pendulum-controlled clock which can be made really accurate. Retro? – yes, but an interesting project all the same. You’ll need a spare quartz clock which must be adapted by ...