| 单词 | permanent magnetism |
| 释义 | > as lemmaspermanent magnetism permanent magnetism n. magnetism which does not depend on the presence of an inducing electric field or current. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > continuing magnetism permanent magnetism1782 the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [noun] > other types permanent magnetism1782 thermo-magnetism1828 diamagnetism1850 photomagnetism1864 piezomagnetism1901 pyromagnetism1901 biomagnetism1963 speromagnetism1973 1782 B. Franklin Let. 22 Sept. in Writings (1987) 1058 Perhaps it may be owing to the permanent magnetism of this globe..that its axis is at present kept parallel to itself. 1827 J. Cumming Man. Electro Dynamics 259 If it be possible to give permanent magnetism to steel by this species of electricity. 1935 C. J. Smith Intermediate Physics (ed. 2) v. xxxix. 658 Cobalt-steel magnets are such that the induced magnetism is generally small compared with the permanent magnetism. < as lemmas |
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