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Altitude
Solar Altitude

(Terms of mathematics/geometry and daylighting)

The angle between a vector and the its projected vector onto a plane it intersects. More general, the angle between the vector and the "horizon" of the plane. This is the counterpart of the polar angle.

Solar altitude is the angular distance of the sun to the horizon from the view of an observer. Of course, every other heavenly body also has its altitude.

illustration of altitude

 

References:
   polar angle
 
 
English    German
altitude    Die Höhe
solar altitude    Die Sonnenhöhe
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