Angular size
angular measurement describing how large a sphere or circle appears from a given point of view From Wikipedia, the free encyclopedia
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Angular size is a measurement of how large or small something is using rotational measurement. It is useful for measuring things that are so far away that they appear two dimensional.
Other websites
- Small-Angle Formula Archived 1997-10-07 at the Wayback Machine
- Visual Aid to the Apparent Size of the Planets
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