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Published byTatum Isgrigg Modified over 10 years ago
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By Brian Garruto, Eric Prescott, Coulton Manning
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Solar energy is radiation from the sun
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Sun goes through a process called fusion, This happens when 4 hydrogen atoms merge together to form 1 helium atom It travels 186,000 miles per second or the speed of light One second of the suns energy is more than enough to power all humans energy needs forever
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The first solar cell was invented in 1839 by Edmond Bequerl In 1954 Bell laboratories created the first phototalic (PV cell) In 2005 solar cell efficiency improved by 40%
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All locations receive solar energy Locations near the equator such as Australia, South America, and Southern Africa has the more solar energy than most locations
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The most popular material for solar cells is silicon PV cells are the most used cell for solar cars and toys Solar cells focus sunlight on a metal tube filled with water the water turns to steam then spines the turbines and the turbines power the generator
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Solar energy doesn’t cause pollution It is unlimited and it can’t be controlled by any nation. The amount of solar energy that hits the Earth in one day is enough energy to meet humans energy needs for a year Silicon is common for solar cells and it’s the second most common substance on the Earths surface
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Solar cells can only convert about 40% of the suns energy into electricity It is hard to harness solar energy because it spreads out over all of earths surface In 2003 only 0.07% of the electricity made was from solar energy Storing solar energy is expensive, the batteries take up a lot of space and it is hard to maintain
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Many scientist are trying to make a solar cell called Bucky balls, Bucky balls are 5% efficient that is the best yet Peel-a-stick can be put on any apparel to charge portable game systems, cell phones, and laptops Cloud gel can be put in windows because it has a gel like substance, it lets sunlight into a room but not heat
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