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pendulum

pendulum

125 4.3
A weight hanging from a fixed point that swings back and forth
  • noun
  • /ˈpɛndʒələm/
translation icon : péndulo
  • The pendulum of the grandfather clock swung back and forth with a soothing rhythm.
  • the pendulum swings
  • a pendulum clock
  • frequency of the pendulum

Are we starting to see the pendulum returning to the centre?

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Examples

  • Then, as if someone had swiftly arrested the pendulum of a clock, Sister Gertrude's head stopped moving.

    Fiction book (1994)
  • Keep your eyes on the pendulum and relax.

  • The first was his observation that a pendulum could be used as a clock.

    Academic text (2002)
  • Transfixed, I watched the heavy pendulum sweep through its arc, driving home the hour.

    Fiction book (2002)
  • In our science class, we learned how a pendulum can demonstrate the principles of gravity and motion.

  • During the experiment, the pendulum swayed gently, illustrating the concept of periodic motion.

Compounds

A clock that uses a swinging weight to keep time

clock pendulum
  • Specialized
4.9

A weight on a rod that swings back and forth to keep a clock's time

compound pendulum
  • Specialized
7.4

A stiff object that swings back and forth from a horizontal support that is not at its middle point

9.8

A heavy object hanging from a rod that measures a bullet's speed when hit

Foucault pendulum
  • Specialized
9.5

A large heavy weight on a long wire that swings in any direction to show the Earth's rotation

gun pendulum
  • Archaic
9.9

A suspended gun that measures bullet speed from its backward swing when fired

Ophioglossum pendulum
  • Specialized
9.9

A tropical fern that grows on trees with long twisted straplike leaves

pendulum watch
  • Archaic
9.9

A small watch from the 1700s with a fake swinging pendulum under glass

physical pendulum
  • Specialized
7.7

A solid object that swings around a fixed horizontal axis that is not through its middle

simple pendulum
  • Specialized
5.5

A small weight hung from a light string of fixed length that swings back and forth

How Big

Foucault pendulum
  • Specialized
9.5
pendulum
125 4.3
clock pendulum
  • Specialized
4.9

Surface Forms

pendulum singular
pendulums plural

Etymology

Pendulum comes from the Latin pendere, which means 'to hang', and it shares this root with common words like suspend and depend. So a pendulum is literally something that hangs and swings back and forth, which is why clocks and simple science experiments use it.