Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436
Email flinn@flinnsci.com

Orange Juice Clock

firewatch

Publication 10960

Price: FREE

Build an electrochemical cell using orange juice and copper and magnesium metal electrodes. The resulting spontaneous oxidation–reduction reaction will generate enough electricity to power a battery-operated clock. Why does the clock work? How long will the clock run? What happens if the metals are reversed?