单词 | aclinic |
释义 | aclinicadj. Physical Geography. rare. aclinic line n. a line on the surface of the earth on which a magnetic needle shows no dip or inclination (inclination n. 9b); = magnetic equator at equator n. 3b. Cf. isoclinal adj. 1. ΘΚΠ the world > the earth > geodetic references > [noun] > latitude > equator > magnetic aclinic line1850 dip equator1883 1850 D. T. Ansted Elem. Course Geol. 20 There is in the neighbourhood of the earth's equator, and cutting it at four points, an irregular curve called the magnetic equator or aclinic line. 1873 E. Atkinson tr. A. Ganot Elem. Treat. Physics (ed. 6) 565 The aclinic line is the line which joins all these places on the earth where..the dipping-needle is quite horizontal. 1935 C. J. Smith Intermediate Physics (ed. 2) v. xli. 690 The line of zero dip is called the magnetic equator or aclinic line. 1997 Dict. Mining, Mineral, & Related Terms (Amer. Geol. Inst.) (ed. 2) 4/2 Aclinic line, the line through those points on the Earth's surface at which the magnetic inclination is zero. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < adj.1850 |
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