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Solar simulator
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<p>A solar simulator (also <a href="/facts/Artificial_sunlight/5517Nz6P">artificial sun</a> or sunlight simulator) is a device that provides illumination approximating natural <a href="/facts/Sunlight/WPkJRC7s">sunlight</a>. The purpose of the solar simulator is to provide a controllable indoor test facility under laboratory conditions. It can be used for the testing of any processes or materials that are <a href="/facts/Photosensitive/dohEzKCm">photosensitive</a>, including <a href="/facts/Solar_cells/3L814UCC">solar cells</a>, <a href="/facts/Sun_screen/W6J13MRz">sun screen</a>, <a href="/facts/Cosmetics/rb1x6P8c">cosmetics</a>, <a href="/facts/Plastics/Kla5QItn">plastics</a>, <a href="/facts/Aerospace_materials/fjWheJUk">aerospace materials</a>, <a href="/facts/Skin_cancer/r9BWEX7W">skin cancer</a>, <a href="/facts/Bioluminescence/IlzgyV4E">bioluminescence</a>, <a href="/facts/Photosynthesis/TMV7w693">photosynthesis</a>, <a href="/facts/Water_treatment/nIstBCdG">water treatment</a>, <a href="/facts/Heavy_crude_oil/GJdkUvAg">crude-oil</a> degradation, and <a href="/facts/Free_radical/qFymuVoT">free radical</a> formation. Solar simulators are used in a wide range of research areas including <a href="/facts/Photobiology/KeL2v8To">photobiology</a>, <a href="/facts/Photo-oxidation/JD3bkFtL">photo-oxidation</a>, <a href="/facts/Photodegradation/Xl0D6pej">photodegradation</a>, <a href="/facts/Photovoltaics/5Xefaayl">photovoltaics</a>, and <a href="/facts/Photocatalysis/XctEct26">photocatalysis</a>. </p>