Magnetism
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seminar surveyer
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Posts: 3,541
Joined: Sep 2010
#1
12-10-2010, 11:55 AM


Abstract

Magnets have been known for centuries.
The Chinese and Greeks knew about the “magical” properties of magnets. The ancient Greeks used a stone substance called “magnetite.” They discovered that the stone always pointed in the same direction. Later, stones of magnetite called “lodestones” were used in navigation.




William Gilbert, an English physician, first proposed in 1600 that the earth itself is a magnet, and he predicted that the Earth would be found to have magnetic poles.



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