torsion pendulum

noun

, Horology.

1. a pendulum the weight of which is rotated alternately in opposite directions through a horizontal plane by the torsion of the suspending rod or spring: used for clocks intended to run a long time between windings.

Word History and Origins

Origin of torsion pendulum¹

First recorded in 1880–85

Example Sentences

The period of a torsion pendulum being much longer than a vibrating pendulum of the same length, the time of running is longer.

From Project Gutenberg