Biografie van Corona
<b>corona</b> is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometres into space, most easily seen during a total solar eclipse, but also observable in a coronagraph. The Latin root of the word corona means <b>crown</b>.<br />
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thumb|300px|right|Solar eclipse of August 11, 1999, as seen from [[France]]<br />
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The high temperature of the corona gives it unusual spectral features, which led some to suggest, in the 19th century, that it contained a previously unknown element, "coronium". These spectral features have since been traced to highly ionized Iron (Fe(XIV)) which indicates a plasma temperature in excess of 10<sup>6</sup> kelvin.<br />
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The corona is divided into three parts. The K-corona (K for continuum) interfaces directly with the chromosphere and is created by sunlight scattering off electrons. The E-corona (E for emission) contains abundant calcium and iron. The F-corona (F for Fraunhofer) is created by sunlight bouncing off dust particles.<br />
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