Foucault pendulum

noun
Fou·​cault pendulum | \ ˌfü-ˈkō- How to pronounce Foucault pendulum (audio) \

Definition of Foucault pendulum

: a freely swinging pendulum that consists of a heavy weight hung by a long wire and that swings in a constant direction which appears to change showing that the earth rotates

First Known Use of Foucault pendulum

1931, in the meaning defined above

History and Etymology for Foucault pendulum

J. B. L. Foucault

Keep scrolling for more

Learn More About Foucault pendulum

Time Traveler for Foucault pendulum

Time Traveler

The first known use of Foucault pendulum was in 1931

See more words from the same year

Dictionary Entries Near Foucault pendulum

Foucault current

Foucault pendulum

foud

See More Nearby Entries 

Statistics for Foucault pendulum

Cite this Entry

“Foucault pendulum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Foucault%20pendulum. Accessed 16 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!