lst century BC-Pliny in his Natural History records the story of a shepherd Magnes discovering the magnetic properties of some iron
upon taking his herds to pasture,he found that the nails of stones,
his shoes and the iron ferrel of his staff adhered to the ground.”
The name magnet may come from lodestones found in Magnesia, Anatolia
（今属土耳其）.
Magnes衍生词：Magnet（磁铁），Magnesium（镁），
（锰），manganate
magnesia, Manganese
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