ALL meanings of magdeburg hemisphere
Mag·de·burg hem·i·sphere
M m - noun magdeburg hemisphere one of a pair of hemispherical cups from which air can be evacuated when they are placed together: used to demonstrate the force of air pressure. 1
- noun magdeburg hemisphere Either of a pair of large copper hemispheres, with mating rims, that 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 even by teams of horses. 0