Pulse Glass

A pulse glass is a completed enclosed container that contains a liquid that boils at a lower temperature than water. When your body temperature comes in contact with the end of the glass that contains the liquid, the liquid will rise against gravity in a series of bubbles or pulses.

Energy Ball

This is a small ball that has two small metal electrodes. When the electrodes are touched simultaneously, the ball lights up and makes a sound. This is done when the electrodes are touched with anything that can conduct or carry electrodes. It is commonly used to demonstrate how open and closed circuits work.