Check out More Cool Physics Toys and Gadgetry!

PacSci Potato Clock

Explore how the electrochemical cell works! This amazing LCD clock runs on 2 potatoes, oranges, grapefruits or cans of soda (& other liquids, such as salt water, toothpaste solution and more--try different liquids and foods for a great science fair project! ).

Potatoes & other energy sources not included.