A solar cell is a device for converting energy from the sun into electricity. The high-efficiency solar cells you can buy at Radio Shack and other stores are made from highly processed silicon, and require huge factories, high temperatures, vacuum equipment, and lots of money.
If we are willing to sacrifice efficiency for the ability to make our...
Make a solar cell in your kitchen
August 04, 2011
free energy, kitchen, semiconductor, silicone, solar
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