Armillary spheres

alt label
Spherical astrolabes
dcterms modified equal to or less than 2020-10-26T18:44:59.166Zequal to or more than 2020-10-26T18:44:59.166Z
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67 original
definition An ancient instrument, used since ancient times until the Middle ages and later, to determine positions of celestial bodies. It consisted of an assemblage of rings, all circles of the same sphere, designed to represent the positions of the important circles of the celestial sphere.
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Concept original
contributor AAS_Frey.Katie original