Encyclopedia > Foucault's pendulum

  Article Content

Foucault's pendulum

A Foucault pendulum, or Foucault's pendulum, is a tall pendulum free to oscillate in any vertical plane and capable of running for hours. It is used to demonstrate Coriolis force and the rotation of the earth. It is named after the inventor, Léon Foucault.

A Foucault pendulum at the equator does not rotate. A pendulum at the pole rotates once a day. A pendulum anywhere on the earth rotates with a speed proportional to the sine of its latitude; thus one at 45° rotates once every 1.4 days and one at 30° every 2 days.


Foucault's Pendulum is also the title of a novel by Umberto Eco. See Foucault's Pendulum (book).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Museums in England

... Museum Imperial War Museum -- see also Manchester The London Institute Madame Tussaud's Museum of Moving Image[?] (MOMI) National Gallery National Portrait ...

 
 
 
This page was created in 34.9 ms