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Solar Cells
today are mostly made of silicon, one of the most common
elements on Earth. The crystalline silicon solar cell was one of the first types
to be developed and it is still the most common type in use today. They do not
pollute the atmosphere and they leave behind no harmful waste products.
Photovoltaic cells work effectively even in cloudy weather and unlike solar
heaters, are more efficient at low temperatures. They do their job silently and
there are no moving parts to wear out. It is no wonder that one marvels on how
such a device would function.
To understand how a ....
Word count: 1104 - Page count: 5
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