DEMONSTRATIONS
- Have an aluminum soda can on a burner, empty except for a small amount of water that is brought to a boil to make steam. With tongs pick up the can and quickly invert it into a basin of water. Crunch! The atmospheric pressure immediately crushes the can with a resounding WHOP! Condensation of the steam and vapor occur and the interior pressure is reduced.
- Lower a narrow glass tube or drinking straw in water, and place your