foucault, jean bernard léon

Science Dictionary
Foucault   (f-kō')  Pronunciation Key 
French physicist who determined that light travels more slowly in water than in air, confirming predictions made by the wave theory of light. In 1850 Foucault also measured the absolute velocity of light. In 1851, by using a type of pendulum that is now named after him, Foucault demonstrated the rotation of the Earth, and in 1852 perfected a gyroscope for the same purpose.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Explore Dictionary.com
Previous Definition: foucault, jean bernard leon
Next Definition: foucault-pendulum
More from Thesaurus.com
Synonyms and Antonyms for foucault, jean bernard léon
More from Reference.com
Search for articles containing foucault, jean bernard léon
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature