- atmosphere gun apparatus
- heavy aluminum foil rounds
- wooden dowel
- target (cardboard box)
- 2 aluminum rods
- 2 telescope clamps
- 2 three-finger clamps
- vacuum pump
- Put a ping pong ball into the tube at the end with the vacuum hose attachment.
- Cover each end with a sheet of mylar and push the caps over each end.
- Set the cardboard box target with open side facing gun and a sheet of cardboard hanging over front of boxes – place box 2m from end of the tube. Align gun with the center of the target.
- Start the vacuum pump and let it run 2-3 minutes. Warn students to plug their ears, then puncture mylar on ping pong end