Zenith - Wikipedia
The zenith is the "highest" point on the celestial sphere. The word zenith derives from an inaccurate reading of the Arabic expression سمت الرأس (samt al-raʾs), meaning "direction of the head" or "path above the head", by Medieval Latin scribes in the Middle Ages (during the 14th century), possibly through Old Spanish. [2] .
Zenith Definition & Meaning - Merriam-Webster
As long ago as the 1300s, English speakers used zenith to name the highest point in the celestial heavens, directly overhead. By the 1600s, zenith was being used for other high points as well.
Zenith vs. Nadir — What’s the Difference?
2024年3月25日 · Zenith is the highest point directly above an observer in the sky, representing peak positions, while nadir is the lowest point, directly opposite the zenith, symbolizing lowest positions or phases.
Zenith | Celestial Point, Celestial Sphere & Celestial Coordinates ...
Zenith, point on the celestial sphere directly above an observer on the Earth. The point 180° opposite the zenith, directly underfoot, is the nadir. Astronomical zenith is defined by gravity; i.e., by sighting up a plumb line.
Zenith vs. Azimuth — What’s the Difference?
2024年3月11日 · Zenith refers to the highest point directly above a particular location on the celestial sphere, while azimuth is a horizontal angle measurement from a specific direction, usually north, to the point of interest.
zenith - Infoplease
zenith, in astronomy, the point in the sky directly overhead; more precisely, it is the point at which the celestial sphere is intersected by an upward extension of a plumb line from the observer's location. Its position in the sky thus depends on the direction of the earth's gravitational field at the observer's location.
What is 'Zenith' - The Economic Times
Definition: Zenith is the imaginary point that is directly above a particular location on the celestial sphere. It is vertically opposite to the apparent gravitational force i.e. directly opposite to the gravitational pull. It is the highest point on the sphere and thus, the farthest up from the gravitational force.
Zenith & Nadir - University of Nevada, Las Vegas
Zenith. The point on the Celestial Sphere directly above the observer. The zenith is diametrically opposite to the nadir. In general, the highest state or point. Originally derived from the Arabic semt ar-ras meaning way over the head: ME senyth; ML cenit. Source: Ba-1418. Nadir. The point on the Celestial Sphere directly below the observer ...
Zenith - (Intro to Astronomy) - Vocab, Definition, Explanations
In astronomy, observing stars at their highest point, when they cross the meridian near the zenith, reduces atmospheric distortion. What is the definition of zenith in astronomical terms? How does an object's position relative to the zenith impact its visibility and clarity?
Zenith - Encyclopedia.com
2018年5月23日 · [in sing.] the highest point reached by a celestial or other object: the missile reached its zenith and fell. ∎ the point in the sky or celestial sphere directly above an observer.The opposite of nadir. ∎ the time at which something is most powerful or successful: under Justinian, the Byzantine Empire reached its zenith of influence.