By replacing single atoms with an entangled pair of ions, physicists in Germany have demonstrated unprecedented stability in ...

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 ...

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 ...

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 ...