| 单词 | azimuth-circle |
| 释义 | > as lemmasazimuth-circle 1. An arc of the heavens extending from the zenith to the horizon which it cuts at right angles; the quadrant of a great circle of the sphere passing through the zenith and nadir, called an azimuth-circle. ΘΚΠ the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > azimuth circle azimuthc1400 vertical circle1559 zenith line1585 vertical1669 c1400 ( G. Chaucer Treat. Astrolabe (Cambr. Dd.3.53) (1872) i. §19. 11 From this senyth..ther come a maner krokede strikes like to the clawes of a loppe..keruyng ouert[hwart] the Almykanteras. And thise same strikes or diuisiouns ben cleped Azymuthz... Thise Aȝimutz seruen to knowe the costes of the firmament. 1595 J. Davis Seamans Secrets ii. sig. J1v Circles of Azumuths, or verticall circles, are quarters of great circles, concurring together in the Zenith. 1605 J. Sylvester tr. G. de S. Du Bartas Deuine Weekes & Wks. ii. ii. 490 The Almycantharats, With th' Azimynths. 1651 N. Biggs Matæotechnia Medicinæ Praxeωs ⁋157 Severall azimuths meeting in the Zenith. 1796 C. Hutton Math. & Philos. Dict. (new ed.) I. 178/2 These azimuths are represented..on the globe by the quadrant of altitude. 1874 Moseley's Lect. Astron. (new ed.) ix. 45 If a great circle..be imagined to be drawn from the zenith..to the horizon, through any star..it is called the azimuth circle of that star. < as lemmas |
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