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Foucault, Jean |
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Foucault, Jean (-Bernard-Léon)(born Sept. 18, 1819, Paris, France—died Feb. 11, 1868, Paris) French physicist. Though educated in medicine, his interests lay in physics. In 1850 he measured the speed of light with extreme accuracy. He invented the Foucault pendulum and used it to provide experimental proof that Earth rotates on its axis. He also discovered the existence of eddy currents (Foucault currents) in a copper disk moving in a strong magnetic field and invented (1859) a simple but extremely accurate method of testing telescope mirrors for surface defects. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Letters to Jeanne from Jean Foucault, Jean de Vepria, Anne s'Grave, and Marguerite de Lummen urged the abbess to relinquish control of the spiritual and temporal operations of the convent to Guillaume. The Truth About Truth, featuring selections from more than 30 authors, including Umberto Eco, Michel Foucault, Jean Baudrillard, Jacques Derrida, Richard Rorty, bell hooks, and Vaclav Havel, suggests the range of interests and various approaches of postmodernism. |
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