Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

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 timepiece ...

The narrator observed a pendulum in the choir, understanding its isochronal motion was governed by the wire's length and π. A magnetic device beneath the floor ensured its perpetual oscillation by ...

Add Yahoo as a preferred source to see more of our stories on Google. Houston Museum of Natural Science's Herzstein Foucault Pendulum has stopped after decades, and museum visitors are wondering why.