Create electricity from a simple spud with this ingenious potato clock which can power a digital alarm clock
- meaning no batteries are needed. You don't even have to use potatoes you can try tomatoes, lemons or even a fizzy drink to power the clock. People will look at you with a puzzled expression as you read the time staring at at a couple of Maris Piper's on your living room mantelpiece. This is the perfect gift for anyone who is interested in learning more about science. Box contents: Digital clock, transparanet tapes, 2 pots, copper & zinc connecting wires.