Early 19th Century French Copernican Heliocentric Armillary Sphere Delamarche

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French Copernican heliocentric Armillary Sphere Delamarche 19th. Some imperfections, the photos tell the tale.

This Armillary Heliocentric Sphere is a … Read more French Copernican heliocentric Armillary Sphere Delamarche 19th. Some imperfections, the photos tell the tale.

This Armillary Heliocentric Sphere is a scientific instrument that was used to demonstrate the heliocentric model of the solar system, which places the sun at the center of the universe. The sphere was created by French cartographer and globe maker Charles-Francois Delamarche in the last quarter of the 18th .
The Earth Orbc in the form of C contains a small Earth connected to the Sun by a mechanism with pulley to maintain its constant inclination throughout its revolution around the Sun. The two outer vertical circles represent the colure solstices and equinoxes, the outer horizontal circle is the ecliptic.In 1780, only 6 planets of the solar system were known. They are Mercury, Venus, Earth, Mars, Jupiter, and Saturn. Uranus, the seventh planet, was not discovered until the following year in 1781 by Sir William Herschel , it place
H.16.5 in x D. 10 in , cleaned , good condition , the moving mechanism around the sun is in working condition , well preserved considering the age. See less