Solar Energy
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From our everyday experiences we know that the sun emits light and heat. Light, heat, radio, x-rays and all other types of solar energy are forms of electromagnetic radiation.
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Figure 1 Electromagnetic spectrum The electromagnetic spectrum includes radio, infrared, visible light, ultraviolet, x-rays and gamma rays. “Solar radiation” means all electromagnetic radiation emitted by the sun including visible light. Solar radiation passes through the atmosphere, is absorbed, and is re-radiated back out to space as infrared (heat) waves. |
