ARMILLARY SPHERE
Sep 02, 2020
0 minutes
An armillary sphere is a mechanical model of the, meridian (the arc passing overhead ), the poles, and , and the celestial equator and ecliptic – the apparent daily and yearly paths of the sun as seen from Earth. There is also a ring with sighting holes that can be aligned with any celestial body, whose angular position can then be read from the various scales.
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