Tag Archives | solar energy

What are the advantages and disadvantages of Solar Energy?

Some of the essential advantages and disadvantages of Solar Energy are it is renewable source of energy; therefore, it is inexhaustible source of energy whereas the latter comes to earth in very diffused form therefore, solar energy has to be concentrated by special type of devices – solar energy collectors, before it can be put to any practical use. These solar energy collectors are generally quite bulky and hence are not always convenient to use.

By |2010-12-30T20:26:12+00:00December 30, 2010|Physics|Comments Off on What are the advantages and disadvantages of Solar Energy?

What are solar cells?

A solar cell is a device, which converts solar energy directly into electricity. About a hundred years ago, it was discovered that electricity is produced when sunlight falls on a wafer (thin layer) of selenium. It was found that only 0.6% of the solar energy falling on selenium is converted into electricity.

By |2010-12-30T20:25:11+00:00December 30, 2010|Physics|Comments Off on What are solar cells?
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