FACTOID # 151: The five countries with the highest coffee consumption are also the five countries whose citizens trust one another the most. Coincidence? Probably.
 
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Encyclopedia > Aura (optics)

An aura is an optical effect wherein gas or dust surrounding an object luminesces or reflects light from the object. Optics (appearance or look in ancient Greek) is a branch of physics that describes the behavior and properties of light and the interaction of light with matter. ... Luminescence is light not generated by high temperatures alone. ...



 
 

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