| 单词 | horseshoe magnet |
| 释义 | > as lemmashorseshoe magnet horseshoe magnet n. a magnet in the shape of a bar bent until the ends nearly meet. ΘΚΠ the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [noun] > a magnet > of specific shape terrella1613 horseshoe magnet1785 bar magnet1821 U-magnet1888 1785 G. Adams Ess. Magn. (ed. 2) 419 To touch horseshoe magnets. 1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 409 A magnet, bent so that the two ends almost meet, is called a horse-shoe magnet. 1832 Nat. Philos. (Libr. Useful Knowl.) II. Magnetism v. 53 These horse-shoe magnets..may be rendered magnetic by the same process as a straight bar. 1871 J. Tyndall Fragm. Sci. (1879) II. xvi. 441 He bent it into a continuous ring, which..he caused to rotate rapidly close to the poles of a horse-shoe magnet. 1930 Movie Makers Feb. 101/1 You will also need a bottle of black India ink..and a large horseshoe magnet. < as lemmas |
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