- zenith sector
- zenith sector nounFormerly, any of several instruments used for measuring zenith-distances• • •Main Entry: ↑zenith
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zenith sector
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Zenith sector — Zenith e 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… … The Collaborative International Dictionary of English
Zenith — e 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… … The Collaborative International Dictionary of English
Zenith distance — Zenith e 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… … The Collaborative International Dictionary of English
Zenith telescope — Zenith e 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… … The Collaborative International Dictionary of English
Sector — Sec tor, n. [L., properly, a cutter, fr. secare, sectum, to cut: cf. F. secteur. See {Section}.] 1. (Geom.) A part of a circle comprehended between two radii and the included arc. [1913 Webster] 2. A mathematical instrument, consisting of two… … The Collaborative International Dictionary of English
Sector of a sphere — Sector Sec tor, n. [L., properly, a cutter, fr. secare, sectum, to cut: cf. F. secteur. See {Section}.] 1. (Geom.) A part of a circle comprehended between two radii and the included arc. [1913 Webster] 2. A mathematical instrument, consisting of… … The Collaborative International Dictionary of English
Dip sector — Sector Sec tor, n. [L., properly, a cutter, fr. secare, sectum, to cut: cf. F. secteur. See {Section}.] 1. (Geom.) A part of a circle comprehended between two radii and the included arc. [1913 Webster] 2. A mathematical instrument, consisting of… … The Collaborative International Dictionary of English
Spherical sector — Sector Sec tor, n. [L., properly, a cutter, fr. secare, sectum, to cut: cf. F. secteur. See {Section}.] 1. (Geom.) A part of a circle comprehended between two radii and the included arc. [1913 Webster] 2. A mathematical instrument, consisting of… … The Collaborative International Dictionary of English
Schiehallion experiment — Schiehallion s isolated position and symmetrical shape lent well to the experiment The Schiehallion experiment was an 18th century experiment to determine the mean density of the Earth. Funded by a grant from the … Wikipedia
Telescopio cenital — Telescopio cenital, construído por Hermann Wanschaff, Berlín Un telescopio cenital es un tipo de telescopio que está diseñado para apuntar hacia arriba en o cerca del cenit. Se utilizan para la medición de precisión de posiciones de estrellas,… … Wikipedia Español
