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Hasil cari dari kata atau frase: Zenith telescope (0.00881 detik)
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English → English (gcide) Definition: Zenith telescope Zenith \Ze"nith\ (?; 277), n. [OE. senyth, OF. cenith, F. z['e]nith, Sp. zenit, cenit, abbrev. fr. Ar. samt-urras way of the head, vertical place; samt way, path + al the + ras head. Cf. Azimuth.] [1913 Webster] 1. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; -- opposed to nadir. [1913 Webster] From morn To noon he fell, from noon to dewy eve, A summer's day; and with the setting sun Dropped from the zenith, like a falling star. --Milton. [1913 Webster] 2. hence, figuratively, the point of culmination; the greatest height; the height of success or prosperity. [1913 Webster] I find my zenith doth depend upon A most auspicious star. --Shak. [1913 Webster] This dead of midnight is the noon of thought, And wisdom mounts her zenith with the stars. --Mrs. Barbauld. [1913 Webster] It was during those civil troubles . . . this aspiring family reached the zenith. --Macaulay. [1913 Webster] Zenith distance. (Astron.) See under Distance. Zenith sector. (Astron.) See Sector, 3. Zenith telescope (Geodesy), a telescope specially designed for determining the latitude by means of any two stars which pass the meridian about the same time, and at nearly equal distances from the zenith, but on opposite sides of it. It turns both on a vertical and a horizontal axis, is provided with a graduated vertical semicircle, and a level for setting it to a given zenith distance, and with a micrometer for measuring the difference of the zenith distances of the two stars. [1913 Webster]


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