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Vieques Puerto Rico

News and information about Vieques, Puerto Rico.

Distillations: Illumination, Segment 1 - July 30, 2008

Summary: In today's episode we focus on the physical type of illumination. First we learn about light pollution and why sodium vapor lamps are used so abundantly today.
http://www.radio4all.net/index.php/program/28661
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