Appraisal: French Pendulum Clock, ca. 1865, from Vintage Baltimore. Check out Gordon S Converse's appraisal of this French pendulum clock, ca. 1865, in Vintage Baltimore.

In a grandfather clock, a pendulum swings back and forth and this periodic motion is maintained using the energy stored in ...

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 ...

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 ...

Researchers have designed a quantum version of a pendulum clock. It could shed light on timekeeping in the quantum realm ...