Solar Energy
The intense pressure at the core of the Sun fuses four hydrogen atoms into a single helium atom, and in doing so converts some of the mass into energy according to Einstein's famous formula E = mc2. Every hour, enough solar radiation energy reaches the Earth to meet the world’s energy demand for a whole year. A variety of technologies are available to convert that energy to useful heat or electricity. These range from simple and inexpensive building design and hot water heating, to elaborate and more expensive methods to convert solar energy into electricity. Most solar technologies benefit from low environmental impact compared to equivalent fossil fuel energy systems.
Solar Energy:
Almost all of the energy that drives the various systems--climate systems, ecosystems, hydrologic systems, etc.--found on the Earth originates from the Sun....
The amount of solar radiation that reaches the Earth's atmosphere is fairly constant and is described by the solar constant: the average value of perpendicular solar...
Active solar heating systems consist of collectors that collect and absorb solar radiation and electric fans or pumps to transfer and distribute the solar heat in...
Solar radiation is not always available at a time and place where people need it. One solution is energy storage: collecting soalr energy when it is...
Passive solar energy refers to the conversion of solar radiation into useful energy without the use of active mechanical devices such as fans and blowers. Such...
The photovoltaic effect is the creation of an electric current in certain materials upon exposure to electromagnetic radiation. First recognized in 1839 by French physicist A....
A solar collector is a device that captures the sun's energy, transforms its radiation into heat, and then transfers that heat to water, solar fluid, or...
The growing use of solar energy is changing the meaning "energy place." Historically that term described coal mines, oil fields and nuclear power plants. But energy...
Solar thermal energy is a technology for harnessing solar energy for thermal energy (heat). Low temperature collectors are flat plates generally used to heat water...
Humans have spent their entire existence devising ways to harness solar energy in one form or another. Solar collectors, solar cells, homes and places powered by...
Articles: Solar Energy
Solar energy
Solar energy refers to the use of the radiant energy from the Sun for heat and power, and to drive a number of industrial processes.
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