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 ...
A replica of Foucault's famous experiment at the Museo Nazionale della Scienza e Tecnica in Milan, Italy Wikimedia Commons On February 3, 1851, a 32-year-old Frenchman—who’d dropped out of medical ...
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