noun. ['ˈpɛndʒələm'] an apparatus consisting of an object mounted so that it swings freely under the influence of gravity.
- physical pendulum
- compound pendulum
- simple pendulum
Rhymes with Foucault Pendulum
noun. French physicist who determined the speed of light and showed that it travels slower in water than in air; invented the Foucault pendulum and the gyroscope (1819-1868).