Armillary Sphere - (Scientific Instruments) Glossary of Antique Terms

Armillary Sphere - (Scientific Instruments) An armillary sphere is a model of the celestial sphere. The exterior parts of this machine are brass rings, which represent the principal pathways of the planets. The armillary sphere is equally fitted to show either the real motion of the earth, or sun and the apparent motion of the planets. Variations are known as spherical astrolabe, armilla, or armil.


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