ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY
Armillary sphere. Earth. Developed by the Greeks it was used as a teaching tool in the 3rd century BC by Ptolemy. They are often seen in portraits from the Renaissance era, as they represented the height of knowledge. Armillary spheres were among the first complex mechanical devices.
Model release not required. Property release not required.