MAKE presents: The LED
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Wait…their presenting LEDs now???? But…they were invented like 50 years ago… And became mass produced a decade ago… A bit late to the party much?
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@PlancksTime divvy
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Nice nose
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In August 1989, Cree Inc. introduced the first commercially available blue LED. After that you could produce true white LEDs, since the primary colours of light are red, blue and green. Later it was noticed that a tri-colour LED produced too much of a rainbow effect and it was then that the dual blue/ yellow LED making a white. Yellow light being a mix of red and green.
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@CognitiveNetwork Don`t worry. With spelling like that, they`re probably not taking you seriously anyway.
1 week ago 2
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Quality LED bulbs UK only : lightevolution.co.uk
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Quality LED bulbs UK only : lightevolution.co.uk
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What type of metal is used for these diodes, and a typical TO-18 photodiode? What would its metal frame and metal "sticks" be made of? Anode/cathode are shown yellow and the frame has the gray metallic collor. (TO-18)
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From the Title It seemed like Make: invented the LED.
HDv1de0 8 months ago 52
I thought it meant make presents (make gifts): the LED. I was like, who would give a LED as a gift?
PlancksTime 6 months ago 34