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Magnets
1. Magnetism was known to the extrly Greek philosophers.
According to the story Magnes, a shepherd, when he was on Mt. Ida
on the island of Crete, was so strongly attracted to the ground by the
tip of his stick and nails of his shoes that he had difficulty in getting
away. Upon digging into the ground to find the cause, he discovered a
stone with the most amazing properties of attracting iron. This stone is
now called lodestone or magnetite.
2. The idea that a lodestone can be used as a compass is a very
old one. The evidence that a piece of iron could be magnetired by a
lodestone and used as a compass appears to have been mentioned as
early as the beginning of the 12 century.

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nagibala09Никичан    2   04.06.2020 20:38    13