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sextant    
n. 六分儀;圓的六分之一

六分儀;圓的六分之一

sextant
n 1: a unit of angular distance equal to 60 degrees
2: a measuring instrument for measuring the angular distance
between celestial objects; resembles an octant

Sextant \Sex"tant\, n. [L. sextans, -antis, the sixth part of an
as, fr. sextus sixth, sex six. See {Six}.]
1. (Math.) The sixth part of a circle.
[1913 Webster]

2. 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}.
[1913 Webster]

3. (Astron.) The constellation Sextans.
[1913 Webster]

{Box sextant}, a small sextant inclosed in a cylindrical case
to make it more portable.
[1913 Webster]

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  • Sextant - Wikipedia
    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
  • Sextant | Navigation, Celestial Measurement Astronomy | Britannica
    sextant, instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude
  • Sextant Coffee Roasters - Best Speciality Coffee in San Francisco
    We specialize in the best Ethiopian, central american, and african coffees We are located in the SoMa district of San Francisco
  • What Does the Sextant Do
    A sextant is a handheld optical tool that helps you find your position at sea by measuring the angle between the horizon and a celestial body, usually the Sun or a bright star
  • Buying a Sextant, Starfinder and Books - Regina Sailing
    To help you choose your favourite sextant, let me explain the differences and see which sextant might be the right one for you The only sextant I would strongly advise against is a cheap plastic sextant, since these are really not suitable for navigation
  • What Is A Sextant? Explained By A Ship’s Officer
    The sextant is a navigational instrument used to measure angles In celestial navigation, it measures the angle between the horizon and a celestial body (the sun, moon, planets or stars), and in terrestrial navigation, it measures the angle between two charted objects (lighthouses, piers, etc )
  • 3 Ways to Use a Sextant - wikiHow
    A sextant is an old navigational tool that measures elevation using angular distances You can use a sextant to determine the altitude in the sky of the sun, moon, or other celestial bodies relative to the horizon
  • Amazon. com: Sextant
    Explore a diverse selection of nautical sextants, from working instruments to collectible replicas Shop quality navigation tools
  • How to Use a Sextant for Navigation and Plot Your Position
    A sextant is an optical instrument used in navigation to measure the angular distance between two visible objects, most commonly a celestial body and the horizon This measurement, known as a “sight,” allows navigators to determine their position
  • SEXTANT Definition Meaning - Merriam-Webster
    The meaning of SEXTANT is an instrument for measuring angular distances used especially in navigation to observe altitudes of celestial bodies (as in ascertaining latitude and longitude)





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