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What (who) is Sextant - definition
WIKIMEDIA DISAMBIGUATION PAGE
SEXTANT
sextant
![U.S. Navy Quartermaster]] 3rd Class, practices using a sextant as part of a navigation training aboard the amphibious assault ship [[USS Bonhomme Richard (LHD 6)]], 2018](https://commons.wikimedia.org/wiki/Special:FilePath/180423-N-DL434-149 (27894845758).jpg?width=200 "U.S. Navy Quartermaster]] 3rd Class, practices using a sextant as part of a navigation training aboard the amphibious assault ship [[USS Bonhomme Richard (LHD 6)]], 2018")
(sextants)
A sextant is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated.
N-COUNT
Sextant
·noun The constellation Sextans.
II. Sextant ·noun The sixth part of a circle.
III. Sextant ·noun An instrument for measuring angular distances between objects, - used ·esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. ·see Quadrant.
Sextant
A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
Wikipedia
Sextant (disambiguation)
Sextant may refer to:
- Sextant (circle), a circular sector equal to one sixth of a circle, or a third of a semicircle
- Sextant, any of six groups of teeth in a human mouth, with 4 to 6 teeth in each sextant
- Sextant, a navigation instrument
- Sextant (astronomical), a non-reflecting astronomical instrument for measuring angles
- Mural sextant, a non-reflecting, wall-mounted astronomical instrument for measuring the altitude of a celestial object
- SEXTANT (Station Explorer for X-ray Timing and Navigation Technology), a NASA-funded project that will test XNAV on-orbit on board the International Space Station.
- Sextant (album), by Herbie Hancock
- Cairo Conference, held in Cairo, Egypt in 1943 codenamed SEXTANT
- Sextant (semigraphics), a 2×3 semigraphical pixel array in computing
Examples of use of Sextant
1. Historians say mathematician James Camak, who led the team, begged the state to provide him the latest equipment, but instead he had to rely on an English sextant –– an instrument more familiar to sea captains than to land surveyors.
2. He plainly couldn’t abandon his old sea–going ways: the oil lamps are set on gimbals, there are fiddles around the edge of the saloon table so plates won’t fly off in Biscay storms, and there is even a binnacle, though a compass is of no more use on a winding river than a sextant on a submerged submarine.
3. Captain Chapple said the men‘s respect for Scott had grown throughout the expedition. ‘It is amazing what he and his team did,‘ he added. ‘Like him, we pulled our sledges ourselves through the snow but they didn‘t have a satellite phone to speak to their families or call for help. ‘We had maps and satellite navigation while they used a sextant to guide them which would have been a phenomenal task and very time–consuming.‘ The team are already looking forward to ‘simple things‘ when they get back, he added. ‘I want a ham and cheese sandwich and a glass of milk,‘ said Captain Chapple.