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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: jlallen who wrote (142484)	8/4/2004 2:09:38 PM
From: spiral3	Respond to of 281500

When reason proved Earth's rotation Published August 1, 2004 PENDULUM: LEON FOUCAULT AND THE TRIUMPH OF SCIENCE By Amir D. Aczel Atria Books, $25, 275 pages, illus. REVIEWED BY RAYMOND PETERSEN washingtontimes.com Foucault's proving of Earth's rotation on its axis took place in a Paris basement on the night of Jan. 6, 1851. The young scientist -- Foucault was in his early 30s -- released a free-moving pendulum. Unlike the familiar back-and-forth motion of a grandfather clock, the plane of swing of a free-moving pendulum is unrestricted; with every swing, the perceptive Foucault saw the world itself turn.