Apparent horizon: Difference between revisions
From Glossary of Meteorology
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|Meaning= | |Meaning=The line between the sky and the earth projected on the [[celestial sphere]]. | ||
The line between the sky and the earth projected on the [[celestial sphere]]. | |Explanation=This line is often irregular, due to the earth's [[topography]]. On flat surfaces, such as the sea or a level plane, the line approximates a [[great circle]] if the observer's [[elevation]] above the surface is insignificant and a [[small circle]] if the elevation is appreciable. | ||
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Latest revision as of 21:29, 13 January 2024
The line between the sky and the earth projected on the celestial sphere.
This line is often irregular, due to the earth's topography. On flat surfaces, such as the sea or a level plane, the line approximates a great circle if the observer's elevation above the surface is insignificant and a small circle if the elevation is appreciable.
