I learned that some lamp was installed in Cleveland.I learned Incadescent among Thomas Edison, he held patents in several European country's. WWI americans were asked to cut back buying light bulbs. I learned what laser mean light, amplification by stimulated, emission, of radiation. The first LED was first invented in 1962 who made the first LED was Nick H. jr.
Author:
DAMONTE' L GRAYS
Last modified:
7/21/2009 9:07 AM (EST)
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