The first Foucault’s pendulum I ever saw was at the Franklin Institute in Philadelphia, the city where I was born. The pendulum hung in a stairwell. Its wire was attached to the ceiling four stories ...

The pendulum at the museum is attached to a 61-foot-long cable. It typically swings as the Earth rotates, knocking down pegs, until it suddenly stopped this month. The Houston Museum of Natural ...

Houston Museum of Natural Science's Herzstein Foucault Pendulum has stopped after decades, and museum visitors are wondering why. The pendulum at the museum is attached to a 61-foot-long cable. It ...