How does a solar pannel work?
Question:
Answer:
The solar panel is made of a sandwich of two materials called semiconductors. Each material is made of millions of atoms. As you might already know, atoms have a positively charged nucleus, and negatively charged electrons which spin around the nucleus. When these two materials are put together in a sandwich, an interesting thing happens: electrons become pulled from the bottom half. But there's a problem. The electrons are all attached to atoms, and the atoms won't let go very easily. This is where the sun's energy helps out. If we shine sunlight on these materials, the sunlight has enough energy to knock the electrons off of the atoms. The electrons will then be free to be pulled to the top of the sandwich.
http://science.howstuffworks.com/solar-c...
too long to explain here, but this website has all sorts of interesting things to learn.
A solar panel is made from a material called amorphous silicon. When the panel is exposed to the sun, it absorbs light and converts this to electricity. When placed on rooftops, solar panels could provide a very clean and efficient power source. On rainy days, I would strongly suggest a backup power source. You know what I mean, don't you?
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