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Light alters its color according to the chemical composition of the matter that emits, reflects or absorbs it
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light2015.org
May 16 International Day of Light
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Recommended Listening
James Clerk Maxwell – poet, mathematician and the father of light – Maxwell proposed his theory of electromagnetism. It allows us to enjoy radio, television, mobile phones and more. So why are so few people familiar with his achievements?
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Wikipedia
Light-emitting diode
Light source
Optical spectrometer
Spectrometer
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