Apr 4, 2008
Unlike Monday’s wind power video, this one is no joke. In fact it’s testament to the strength of balloon rubber, the force of gravity, fluid mechanics, and high-speed photography. The clip lasts about 32 seconds, but the actual action is taking place in a fraction of that time. Recorded on a Photron
ultima APX at 2000 frames per second. If you view the original high-quality clip you can use the …
Apr 1, 2008
This experiment is closely related to the potato-powered mp3 player but not the lemon battery, so if you try this at home…well…
Anyway, the set up involves a lighted candle, a couple of screws, a glass jar and lid, various crocodiles clips and wires, and a small motor with a fan. Put them altogether, break wind into the jar, and power up the electric motor. It’s a slow burner …
Mar 10, 2008
The lemon battery, it’s a perennial kids science favourite and perfect for a rainy Saturday morning (if it’s not raining why aren’t you kids outside playing instead of surfing the Pipes on the InterWebs, huh?) Anyway, with a single lemon, a few bits of wire, a copper penny, and a zinc-galvanized nail you can generate electricity (just over one volt).
However, one lemon is not enough to light an LED …
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