Pendulum bob

Related to Pendulum bob: amplitude
the weight at the lower end of a pendulum.

See also: Pendulum

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
and hang there, a patient pendulum bob, waiting for you to finish.
The pendulum bob swings round a circle, taking a small rotating piece with it directly linked to the clock gear train.
The elegant pendulum bob is characterised by the magnitude 3.8 alpha Horologii in the far north-east of the constellation, with magnitude 4.9 delta Horologii its close neighbour.
The answer to the question, "Was Galileo correct?" is "Yes." The amplitude (distance the pendulum bob swings) does not affect the time it takes (frequency) to make one complete swing (period).
If you pull a pendulum bob to the side, it will swing.
Old tower clocks at Sacred Heart Church on Georgetown's Main Street, the Public Hospital, the Muneshwer Building, and the city's three public markets are showing how efficiently the well-engineered traditional timekeeper of the past can behave: the silent dance of gear wheels, the so-familiar "tick-tock" of the escapement mechanism, the slow arc of the large, heavy pendulum bob swinging hypnotically in its pit below, and the massive driving weights, looking for all the world like airborne anchors, suspended in the gloom far beneath.
If we pull the pendulum bob up a certain distance and release it, it will (for small amplitude forcing) swing back and forth about its rest position periodically for all subsequent times.