Clocks

Cola Clock Kit

Quench a thirst for learning and power a clock using cola. Learn how batteries work when you use cola to make a chemical reaction that powers a clock. Completely safe and doesn’t require batt... More.

Two-Potato Clock

Designed to demonstrate the principle of an electrochemical cell. This LCD clock runs on two potatoes, oranges, grapefruits, or cans of soda pop. An excellent demonstration unit. More.