| 单词 | superior meridian |
| 释义 | > as lemmassuperior meridian superior meridian n. [after French méridien supérieur (1796 in the passage translated in quot. 1809)] Astronomy †(a) (in relation to the motion of the sun and moon) that part of the celestial meridian which is above the horizon, or above the celestial equator; the upper meridian (obsolete); (b) (in relation to the motion of circumpolar stars) that part of the celestial meridian which extends from the celestial pole and passes through the zenith (now rare). ΘΚΠ the world > the universe > star > stellar motion > [noun] > highest point meridian1729 superior meridian1809 the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > hour circle > meridian > superior superior meridian1809 1809 J. Pond tr. P. S. Laplace Syst. World I. i. xiii. 167 The ocean rises and falls twice in every interval of time comprehended between two consecutive returns of the Moon to the superior meridian [Fr. méridien supérieur]. 1827 J. Farrar Elem. Treat. Astron. 28 The time of transit of any one star over the superior meridian..is exactly intermediate between the times when the star is at the same height above the horizon on each side. 1864 Proc. Royal Soc. 13 331 Those waves are not of equal magnitude, the barometer being uniformly higher when the moon is on the inferior meridian, and its attraction is therefore exerted in the same direction as the earth's, than when it is on the superior meridian. 2000 N. Audard-Sword tr. H. Buriller Celestial Sites, Celestial Splendors 158/2 From α Ursae Majoris and λ Draconis, extend an isosceles triangle to the west (at the passage at the superior meridian): the pair of galaxies M81 and M82 will appear. < as lemmas |
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