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Electroluminescence

Electroluminescence is an optical phenomenon and electrical phenomenon where a material such as a natural blue diamond emits light when an electric current is passed through it.



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1904

... The giant French film company Pathé Freres[?] opens offices in Brussels, Belgium, New York City and Moscow, Russia, with an inventory of 12,000 titles. 1904 ...

 
 
 
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