- 2 potatoes (or cut one potato in half)
- 2 short lengths of copper wire
- 2 galvanized nails (not all nails are galvanized or zinc-coated)
- 3 alligator clip wire units (alligator clips connected to each other with wire)
- 1 low-voltage LED clock (type that takes a 1-2 volt button battery)
Potato Clock - Make a Potato Battery to Power an LED Clock
By Anne Marie Helmenstine, Ph.D., About.com
You may have the supplies for the potato clock lying around the house already. Otherwise, you can find the materials for a potato clock in any hardware store. There are also pre-made kits you can purchase that contain everything you need except the potatoes. You will need:
Index: Potato Clock - Make a Potato Battery to Power an LED Clock
- Potato Battery - Introduction
- Materials for a Potato Clock
- How to Make a Potato Clock
- Potato Battery - More Fun Things to Try
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