Who knew that those tasty spuds can also do double-duty as an undercover battery? Believe it or not, the common potato has the capacity to create enough electrochemical energy to power a small digital clock. The trace amount of acid and salt in the potato serves as an electrolyte and makes an excellent conductor.
What You Need:
- 2 potatoes (or one potato cut in half)
- 2 short pieces of copper wire
- 2 galvanized nails
- 3 alligator clips
- Piece of sandpaper or steel wool
- Low-voltage LED clock or watch
Show Instructions
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