Hackaday6y
History Of White LEDs
Of course, that means that incandescent light bulbs are more efficient ... The first visible-spectrum LED was built at General Electric in 1962, with the first commercially available (red) LEDs ...
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As we enter the shortest days of the year here’s the history of light bulbs
1877 — 1885: Competition for the incandescent light bulb heats up ... While working for General Electric, Nick Holonyak Jr., invented the first visible-spectrum LED in the form of red diodes.
Hackaday4y
Prism Lighting – The Art Of Steering Daylight
The incandescent light bulb was one of the first early applications of electricity, and it’s hard to underestimate its importance. But before the electric ... light into its spectrum of colors ...