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 ...
A Foucault pendulum is a simple device for observing the Earth's rotation. While such pendulums have been around for more than 150 years and are a staple of the modern science museum, they are ...
Introduction Did you know that playground swings can provide a good lesson in physics—as well as lots of fun? The back-and-forth motion of a swing is an example of a pendulum. We see pendulums in ...
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