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Direct linkRoman, Harry T. – Tech Directions, 2005
A photovoltaic panel can convert sunlight directly into electricity. If one connects enough of them in a series-parallel arrangement called a solar array, they can provide about half of a home's annual electricity needs. The panels comprise specially treated electronic materials that when exposed to sunlight will give up electrons freely, and…
Descriptors: Energy, Energy Education, Power Technology, Light
Roman, Harry T. – Tech Directions, 2004
Over the past 25 years, the author has had the opportunity to study the subject of solar energy and to get involved with the installation, operation, and testing of solar energy systems. His work has taken him all over the United States and put him in contact with solar experts from around the world. He has also had the good fortune of seeing some…
Descriptors: Energy, Energy Education, Power Technology, Hands on Science
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