Demonstrates the power of atmospheric pressure Classes Used: Phys 101

Parts Needed: - Hemispheres - Vacuum pump

1. While holding the hemispheres together, use the vacuum pump to evacuate the enclosure. 2. Turn the valve and disconnect the pump to lock the spheres. (PS. the valve is open when the haft is vertical, the valve is closed when the haft is horizontal) 3. The sphere can now hold up to 5 kg. 4. to unlock the spheres, turn the valve.

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Vacuum Pump needed for this demo can be found in the bottom left corner of the Yellow Closet

Updated on: May 11th, 2015