| 单词 | blue magnetism |
| 释义 | > as lemmasblue magnetism blue magnetism n. Physics (now disused) the magnetism around the south pole of a magnet (formerly regarded as a distinct type of magnetism from that around a north pole); cf. red magnetism n. at red adj. and n. Compounds 1f(c)(i). ΘΚΠ the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [adjective] > polar > relating to north or south pole positive1837 north polar1849 blue magnetism1865 1865 F. J. Evans & A. Smith in Philos. Trans. (Royal Soc.) 155 305 To avoid the ambiguity which arises from the use of the terms ‘North’ and ‘South’ magnetism, we shall speak of the magnetism of the north end of the needle and the southern hemisphere of the earth as red magnetism, of the south end of the needle and the northern hemisphere as blue magnetism. 1892 T. O'C. Sloane Standard Electr. Dict. (1893) 345 A two-fluid theory of magnetism has been evolved... It assumes a north fluid or ‘red magnetism’ and a south fluid or ‘blue magnetism’. 1919 Jrnl. Inst. Electr. Engineers 57 364/2 To overcome the confusion involved by having to consider the earth as a ‘reversed’ magnet, compass adjusters think only of red magnetism and blue magnetism. < as lemmas |
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