Thursday, October 15, 2009

Physics: Charge your batteries!

This week we investigated batteries: how they work, how to measure their voltage, and what happens when you put them in series.

My original plan was to have them build circuits, but wouldn't you know it...all my AAs were dead. Pretty embarrassing the first week and all... Luckily I had just gone grocery shopping and had plenty of lemons, potatoes, salt, and vinegar.

Why was this lucky? No, I did not distract them with lemonade and french fries ... it turns out that with a few strips of copper and zinc, wires, and various produce, you can light an LED.

Look out McGyver, here we come!

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