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invented in 1967
Star charts and instructions included
but you'll get much more out of it with parental involvement
22cm long x 20cm wide
Great for 6+ year olds at play/learning
Potato Clock Digital Weather Station invented in 1967Fascinating unbelievable but right in front of your eyes you generate a small electric current from a potato, sufficient to power a clock. Kit contains the electrodes needed and instructions you supply the potato.(Try a lemon or tomato too). Green Science package 21cm x 17 x6.
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