How Blue LEDs Changed the World

Not only are small, energy efficient LEDs used in almost every piece of modern electronics, they have the greatest potential impact on energy savings globally. But LEDs didn't have much use until the '90s, when Japanese scientists discovered the missing link needed to complete the color spectrum: The blue LED.

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+1 1. ringmaster commented 54 days ago

That light also affects our sleeping pattern.
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0 2. ravitejafe commented 38 days ago

This is a very great Video and the way you express your all video details that is too good.thanks for sharing with us this useful video..

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