Octant (instrument)

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• Octant (instrument) — Octant. This instrument, labelled Crichton London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this… …   Wikipedia

• Octant (disambiguation) — Octant may refer to: Octant, one of eight divisions Octant (instrument), a navigation instrument for measuring angles between celestial objects The Octant, the Octans constellation This disambiguation page lists articles associated with the same… …   Wikipedia

• octant — [ ɔktɑ̃ ] n. m. • 1619; lat. octans « huitième partie » 1 ♦ Géom. Arc de 45° (huitième de cercle). 2 ♦ Mar. anc. Instrument du genre du sextant, mais dont le limbe n est que de 45°. ● octant nom masculin (latin octans, antis) Huitième partie du… …   Encyclopédie Universelle

• octant — OCTÁNT, octante, s.n. 1. Instrument de navigaţie maritimă şi aeriană sau care serveşte la măsurarea înălţimii aştrilor, a distanţelor lor unghiulare etc. 2. A opta parte din circumferinţa unui cerc sau dintr o suprafaţă circulară. ♦ Fiecare… …   Dicționar Român

• Octant (constellation) — Octant Pour les articles homonymes, voir Octant (homonymie). Octant …   Wikipédia en Français

• octant — (n.) instrument for making angular measurements in navigation or astronomy, 1731, from L.L. octans the eighth part, from octo eight (see OCTA (Cf. octa )) on analogy of QUADRANT (Cf. quadrant). In geometry, octant meant the eighth part of a… …   Etymology dictionary

• Instrument De Navigation — Sommaire 1 Système Magnétique 2 Système Céleste 3 Système à émission d ondes 4 Radionavigation …   Wikipédia en Français

• Octant — Oc tant, n. [L. octans, antis. fr. octo eight. See {Octave}.] 1. (Geom.) The eighth part of a circle; an arc of 45 degrees. [1913 Webster] 2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way… …   The Collaborative International Dictionary of English

• Octant — (v. lat.), 1) (Spiegeloctant, Sphärischer O.), ein astronomisches, auch zur See gebräuchliches Instrument, der achte Theil eines Kreises, mit welchem man durch doppelte Reflexion Winkel messen kann; meistens wird es zum Messen der Sonnenhöhe… …   Pierer's Universal-Lexikon

• octant — [äk′tənt] n. [LL octans, eighth part < L octo,EIGHT] 1. an eighth of a circle; 45° angle or arc 2. an instrument like the sextant, for measuring angles 3. Astron. the position of one celestial body when it is 45° distant from another 4. Math.… …   English World dictionary