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pendulum

pendulum

35 4.3
A weight hanging from a fixed point that swings back and forth
  • noun
  • /ˈpɛndʒələm/
: 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
1 4.9

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

Foucault pendulum
  • Specialized
1 9.5

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

simple pendulum
  • Specialized
1 5.5

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

compound pendulum
  • Specialized
1 7.4

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

1 9.8

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

physical pendulum
  • Specialized
1 7.7

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

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

How Big

Foucault pendulum
  • Specialized
1 9.5
pendulum
35 4.3
clock pendulum
  • Specialized
1 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.