sextant
Kelime Anlamı :
1. SEKSTANT: Esas itibarıyla, seyir subayları (Dz.) ve seyrüseferciler (Hv.) tarafından; güneşin, ayın bir yıldızın veya ufuk yukarısındaki bir gezegenin irtifa ve açısal yüksekliğini ölçmekte kullanılan alet. Tabii ufuk veya tavsiye ruhlusu ufkundan, yardımcı nokta veya yardımcı istikamet hattı olarak faydalanılabilir.
2. dairenin altıda biri.
3. sekstant.
4. gemicilikte bir gökcisminin yüksekliğini ölçen alet.
5. ayna.
6. OKTANT: Açı ölçmeye mahsus, özellikle uçaklarda kullanılan, bir tesviye ruhlusunu havi sekstanta benzer bir alet. Bu alet; güneş, ay veya diğer bir gezegenin ya da ufuk düzleminin üst tarafında bulunan herhangi bir yıldızın açısal yüksekliğini ölçer.
7. Bir dairenin sekizde biri.
8. (astr.) bir gökcisminin diğerinden 45 derece uzaklıkta iken bulunduğu yer.
9. oktant.
10. dairenin sekizde biri.
Tanımlar :
1.
A navigational instrument containing a graduated 60-degree arc, used for measuring the altitudes of celestial bodies to determine latitude and longitude.
2. see Sextans.
2. see Sextans.
from The American Heritage® Dictionary of the English Language, 4th Edition
1.
A navigational device for deriving angular distances between objects so as to determine latitude and longitude.
2. one sixth of a circle or disc; a sector with an angle of 60°.
2. one sixth of a circle or disc; a sector with an angle of 60°.
from Wiktionary, Creative Commons Attribution/Share-Alike License
1.
the sixth part of a circle.
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.
3. the constellation Sextans.
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.
3. the constellation Sextans.
from the GNU version of the Collaborative International Dictionary of English
1.
in mathematics, the sixth part of a circle. hence an important instrument of navigation and surveying, for measuring the angular distance of two stars or other objects, or the altitude of a star above the horizon, the two images being brought into coincidence by reflection from the transmitting horizon-glass, lettered b in the figure.
2. [capitalized] same as Sextans, 2.
2. [capitalized] same as Sextans, 2.
from The Century Dictionary and Cyclopedia