Foucault pendulumFoucault pendulum
a pendulum consisting of a heavy weight on the end of a long wire hanging from a fixed point, of the kind invented by Jean Foucault to demonstrate that the earth is rotating: although the weight continues to swing within a single plane, its path appears to an observer to shift progressively over time
A simple pendulum suspended from a long wire and set into motion along a meridian. The plane of motion appears to turn clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere, demonstrating the axial rotation of the earth.
Origin of Foucault pendulumAfter Jean Bernard Léon Foucault.
(plural Foucault pendulums)
- Foucault's pendulum