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Top 10 light facts

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Light quiz
Which beverage is is fluorescent in UV light?
Tonic water is transparent in daylight. Under ultraviolet light, the quinine makes it fluorescent (pictured), even though it is present in a negligible concentration.
Luca Biaggi
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Very interesting!
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Which color has the greatest albedo?
White. Albedo in Latin is simply "whiteness". It is the reflecting power of a surface - the ratio of reflected radiation from the surface to incident radiation upon it.
Paweł Kołodziejczyk
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Very interesting!
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