Two parts of a Magdeburg hemispheres.
Engraving depicting the two parts of a Magdeburg hemispheres. The Magdeburg hemispheres are a pair of large copper hemispheres, with mating rims. They were used to demonstrate the power of atmospheric pressure. When the rims were sealed with grease and the air was pumped out, the sphere contained a vacuum and could not be pulled apart by teams of horses. Dated 19th Century.
Universal Images Group
2961 x 7084 pixels
Print Size @ 300 dpi
10 x 24 inches / 25 x 60 cm
Model No you may not need it
Property No you may not need it