Elektriske fænomener: Magnetismen blev opdaget i antikken. Den græske hyrde Magnes kunne ikke løsrive sin jernstav fra jorden. Han fandt ud af, at dette fænomen skyldtes tiltrækningen fra en sten kaldet magnetisk oxid. Anonym illustration(Electrical phenomena: magnetism was discovered in Antiquite. The Greek shepherd Magnes could not detach his iron stick from the ground. He found that this phenomene came from the attraction of a stone called magnetic oxide or magnetic oxide. Anonymous illu)Anonymous Anonymous |
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Udateret · Engraving
· Billed-ID: 925426
Private Collection / Bridgeman Images |
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