Introduction Harnessing energy from the sun holds great promise for meeting future energy needs because solar energy is a renewable and clean energy resource. Fossil fuels will eventually run out and the future of nuclear power is uncertain. For these reasons, other energy sources need to be harnessed. Solar energy is one of these sources. …
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ENERGY FROM THE SUN The sun has produced energy for billions of years. Solar energy is the sun’s rays (solar radiation) that reach the earth. Solar energy can be converted into other forms of energy, such as heat and electricity. In the 1830s, the British astronomer John Herschel used a solar thermal collector box (a …
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Photovoltaic (PV) generations The first generation of PV cells was discovered at Bell Telephone in 1954, when scientists discovered that silicon (is one of element found in sand) created an electric charge when exposed to sunlight. Traditional solar cells are made from silicon, one of the most common elements on Earth. Second-generation of PV cells …
Panels on Homes and Other Buildings Solar panels for buildings are no different from other panels. They must be able to receive enough sunlight to be useful. Often, they are put on a roof that faces the Sun and is not shaded. Sometimes they are simply built on the ground. Solar panels come in various …
Introduction – Why Solar? Natural disasters such as hurricanes, tornados, floods, and powerful storms often occur with little warning, and can be as destructive as Hurricane Katrina (2005), Hurricane Irene (2011) or Hurricane Sandy (2012). Sandy left 8.5 million people across the East Coast without power, adding further challenges to disaster relief efforts such as …
