Author's Suggestions for Vortex in a Bottle

title description rating post date author
Desk Chair Angular Momentum

Describes a simple demonstration of angular momentum conservation using a spinning desk chair. A short tutorial of angular momentum and angular momentum conservation is included.

Average: 4.5 (2 votes)
25-Mar-14 guy
Upside-down Water

Turn a glass of water upside down without letting the water fall out. The secret to this trick involves some basic lessons in air pressure. Best performed over a teacher's head.

Average: 4.3 (155 votes)
13-Aug-13 guy forces on the upside-down water glass