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单词 pendulum
释义
pendulum
(once / 2110 pages)
n

A pendulum is something hanging and swinging freely from a fixed point. A grandfather clock might use for timekeeping a pendulum that swings back and forth.
Pendulum comes from the Latin word pendulous, meaning "hanging down." If someone hangs a pocket watch in front of you and swings it back and forth, saying, "You're getting very sleepy," they're mimicking the movement of a pendulum. We also use the word pendulum to describe a situation moving between two poles or across a spectrum, like the balance of power in a multiparty political system.
WORD FAMILY
pendulum: pendulums
USAGE EXAMPLES
The work will cost £29m and involve repairs to the clock's hands, mechanism and pendulum.
BBC(Dec 17, 2016)
The work, which will begin early in the new year, will cost £29m and involve repairs to the clock's hands, mechanism and pendulum.
BBC(Dec 16, 2016)
“The pendulum, in my opinion, is already moving back to the left.”
Washington Post(Dec 07, 2016)
n an apparatus consisting of an object mounted so that it swings freely under the influence of gravity
Hypo|Hyper
Foucault pendulum
pendulum with a long wire; can swing in any direction; the change in the swing plane demonstrates the earth's rotation
metronome
clicking pendulum indicates the exact tempo of a piece of music
compound pendulum, physical pendulum
pendulum consisting of an actual object allowed to rotate freely around a horizontal axis
simple pendulum
a hypothetical pendulum suspended by a weightless frictionless thread of constant length
ballistic pendulum
a physical pendulum consisting of a large mass suspended from a rod; when it is struck by a projectile its displacement is used to measure the projectile's velocity
clock pendulum
a physical pendulum used to regulate a clockwork mechanism
apparatus, setup
equipment designed to serve a specific function
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更新时间:2024/12/23 22:21:22