|Finale, Carmel, CA. 2009. Bonnie Brooks, photographer|
Armillary spheres served as a model of the heavens with intersecting rings marking everything from latitude and longitude to the tropic of Cancer. (No wonder the name was derived from the Latin word ‘armilla’ meaning bracelet or ring.) Early spheres were fabricated out of wood but as they became more complex they were made of brass which withstood the elements out of doors. As with most objects of science, armillary spheres progressed as new discoveries were made. The Chinese used them to make calendar computations and calculations. During the Middle Ages, they served as sophisticated instruments used to map the solar system. Soon rings were added to mark the equator and the rotation of the sun, moon and known planets, making these spheres some of the first complex mechanical devices.
|Marschalk-Spencer, Natchez, MS. July 2002. Sarah G. Tillman, photographer.|
Smithsonian Gardens Intern, 2013