What Is The Definition Of Zenith Distance
1914 - Nuttalls Standard dictionary of the English language By Nuttall PAustin. Zenith-distance the distance of a celestial body from the zenith.
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Zenith distance synonyms Zenith distance pronunciation Zenith distance translation English dictionary definition of Zenith distance.
What is the definition of zenith distance. The nadir which is directly opposite the zenith has a zenith distance of 180 and the celestial horizon has a zenith distance of 90. The Zenith Distance is the angular distance ZX measured along the vertical circle from the zenith to the celestial body. Zenith is the imaginary point that is directly above a particular location on the celestial sphere.
The opposite of zenith that is the direction of the gravitational pull is called the Nadir at 180 degrees. The complement of the altitude. Zenith definition the point on the celestial sphere vertically above a given position or observer.
To refrain from familiarity. To keep ones distance to stand aloof. Zenith-sector an astronomical instrument for measuring with great accuracy the distances from the zenith of stars which pass near that point.
Which latter event will further diminish the entire distance by a length equal to the radius of the earth i. Zenith distance Astron the arc on the heavens from a heavenly body to the zenith of the observer. The highest point reached by a heavenly body any object existing in space especially a.
Relationship Between Zenith Distance And The Nautical Mile. Polar distance definition is - the angular distance of any point on a sphere from one of its poles. All the time that he gazed upward to the zenith he was.
The zenith distance is the complement of the height. The angular distance from the zenith of a point on the celestial sphere to the sphere measured along a great circle that is perpendicular to the horizon. What does zenith mean.
The complement of the altitude and hence is. An angle of 1 minute at the earths centre will subtend an arc of length 1 nm on the earths surface. Therefore if the angle XOZ is 30 o the arc ZX will be equal to 30 x 60 1800 arc minutes at the earths surface and so the zenith distance will be equal to 1800 nautical miles.
The Zenith distance of a direction is the angle between the direction and the direction of the zenith see Vertical. That is the angle XOZ. Thus the radiance and reflectance are interchangeable based on this definition.
The complement of the altitude. ZThe angular distance of a celestial body from the zenith. Since the celestial meridian is a vertical circle and is therefore perpendicular to the celestial horizon it follows that angle AOZ is a right angle and angles AOX and XOZ are complementary angles.
In this document we define the reflectance at a given wavelength and for a specific solar-zenith angle of 0 to be related to the radiance L through LF 0 cos 0 where F 0 is the extraterrestrial solar irradiance 76. It is the complement of the altitude. Zenith distance definition is - the angular distance of a celestial object from the zenith measured by the arc of a vertical circle intercepted between the object and the zenith.
Information and translations of zenith in the most comprehensive dictionary definitions resource on. The zenith distance is 90 minus the bodys altitude above the horizon ie. Zenith in astronomy terms is the point in the sky directly overhead.
The angular distance from the zenith to any celestial body in space is called the zenith distance. Zenith synonyms zenith pronunciation zenith translation English dictionary definition of zenith.
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