The light emitting diode, or LED, emits less heat than a traditional incandescent light bulb and it lasts much longer. But where did these brilliant diodes come from? Tune in to find out!
You may be surprised to learn just how long LED's have been around!
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Before they were for ladies, high heels were worn by soilders in battle! http://t.co/GjGAPM1KzS
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Love Math Puzzles? Learn the origins of Sudoku: http://t.co/pgFNC4hrI9