Jordmagnetism: vid magnetiska poler tappar kompassen kompassen. Vetenskapsmannen James Clark Ross (1800-1862) använder en kompass under sin vetenskapliga expedition till Antarktis. Bakom honom finns vulkanen Erebus som han upptäckte 1841. Anonym illustrati(Earth magnetism: at magnetic poles, the compasse loses the compasse. Scientist James Clark Ross (1800-1862) using a compasse during his scientific expedition to Antarctica. Behind him is the Erebus volcano that he discovered in 1841. Anonymous illustration)Anonymous Anonymous |
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odaterad · Engraving
· TavelD: 918300
Private Collection / Bridgeman Images |
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