Educational Science Model Middle School Physics Experiment Equipment Atmospheric Pressure Test Madenburg Hemisphere

Experimental principle: Prove atmospheric pressure. In the experiments, we squeezed air out of the suction cup to reduce the number of air particles in the suction cup. The atmosphere outside the suction cups presses the two suction cups together, making it difficult to separate them. operating: 1. Open the handles of the two hemispheres respectively, half open 90 degrees and the other half 20 degrees. 2. Put the rubber surfaces of the two hemispheres together and hold them firmly with both hands. 3. First buckle one of the handles and then fasten the other. Lamination is complete.