地球磁力:在磁极,罗盘失去了罗盘的作用。科学家詹姆斯-克拉克-罗斯(1800-1862年)在对南极洲进行科学考察时使用了一台罗盘。他身后是他在1841年发现的埃里伯斯火山。匿名插图(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)匿名匿名 |
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日期不详 · Engraving
· 图片ID: 918300
Private Collection / Bridgeman Images |
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