Lift a Bottle Without Touching It
Lay a few easily accessible items on the table in front of a friend or family member and challenge him or her to lift a soda bottle without actually touching the bottle. They can only use the items in front of them in this challenge: a measuring cup full of uncooked rice, a pencil and the soda bottle itself.
How To Do It
The force that you put forth when you jab the pencil into the rice is evenly distributed among the small grains of uncooked rice. The rice is pushed outward and it is forced to press against the sides of the bottle as well as the pencil. Therefore, the pressure from the rice forms a strong hold on the pencil and holds it in place, making it easy to lift the bottle up by only touching the pencil.