- sextants
- sex·tant || 'sekstənt n. early navigational instrument for determining latitude and longitude by measuring angular distances
English contemporary dictionary. 2014.
sextants
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Sextants — Sextant Pour les articles homonymes, voir Sextant (homonymie). Un sextant. Un sextant est un instrument de navigation permettant de relever la … Wikipédia en Français
Sextant — This article is about the sextant as used for navigation. For the astronomer s sextant, see Sextant (astronomical). : For the history and development of the sextant see Reflecting instruments A sextant is an instrument generally used to measure… … Wikipedia
Reflecting instrument — Reflecting instruments are those that use mirrors to enhance their ability to make measurements. In particular, the use of mirrors permits one to observe two objects simultaneously while measuring the angular distance between the objects. While… … Wikipedia
Sextant (astronomical) — This article is about the Sextant as used for astrometry. For the navigator s sextant, see Sextant . Sextants for astronomical observations were used primarily for measuring the positions of stars. They are little used today, having been replaced … Wikipedia
Sextant — Pour les articles homonymes, voir Sextant (homonymie). Un sextant. Un sextant est un instrument de navigation à réflexion servant à mesurer la distance angulaire entre deux points aussi bien verticalement qu h … Wikipédia en Français
Celestial navigation — Celestial navigation, also known as astronavigation, is a position fixing technique that was devised to help sailors cross the featureless oceans without having to rely on dead reckoning to enable them to strike land. Celestial navigation uses… … Wikipedia
BaBar experiment — The BaBar experiment is an international collaboration of more than 550 physicists and engineers studying the subatomic world at energy of approximately ten times the rest mass of a proton. Its design was motivated by the investigation of CP… … Wikipedia
Backstaff — Not to be confused with Ballastella. Davis quadrant from the beginning of the 18th century The backstaff or back quadrant is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. When… … Wikipedia
Kelvin Hughes — is a major player in the design and manufacture of marine navigation systems and the supply of navigational data to both the merchant marine and naval marketplace. Navigational and tactical display systems from Kelvin Hughes are fitted to ships… … Wikipedia
Lunar distance (navigation) — For the history of the lunar distance method, see History of longitude. Finding Greenwich time while at sea using a lunar distance. The Lunar Distance is the angle between the Moon and a star (or the Sun). The altitudes of the two bodies are used … Wikipedia
