| 单词 | polar distance |
| 释义 | > as lemmaspolar distance polar distance n. Astronomy the angular distance of a point on a sphere from the nearer pole (equal to the complement of the declination or latitude). ΘΚΠ the world > the universe > celestial sphere > [noun] > pole > polar distance polar distance1652 co-declination1661 1652 S. Foster Posthuma Fosteri: Descr. Ruler xxii. 75 Measure EP upon your Scale of Chords, it will there give you the polar distance. 1754 J. Robertson Elements Navigation I. v. v. 236 EO = (HO − HE =) 13° 27′, is the decl. sought; which is north, as the altitude exceeds the co-lat.; consequently the polar distance OP = 76° 33′. 1974 Philos. Trans. (Royal Soc.) A. 276 70 The text gives..measurements in degrees..for the principal stars in the group; i.e. the hour-angle of the principal star..and the north polar distance. < as lemmas |
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