Weights of Air using the Magdeburg Sphere

Description
Using the Magdeburg sphere setup, the weight of air can be demonstrated by weighing a sealed sphere, then evacuating it and weighing it again. The difference in weight measurements shows the mass of the air that was inside the sphere. This experiment vividly illustrates that air has weight, and the evacuated sphere weighs less than when it was filled with air. It's a clear demonstration of the physical property of air and the concept of air pressure.
PIRA DCS Number
2B40.45