LED bulb.
The first visible LED was actually created by accident, and it was red only. In 1962, Nick Holonyak Jr. developed the first practical visible-spectrum LED while working at General Electric. But for decades after that, LEDs could only produce red (and later green) light.
The strange part? Scientists struggled for over 30 years to create a blue LED, which is essential for making white light (the kind used in modern bulbs). Without blue, you simply can’t produce true white LED lighting.
It wasn’t until the 1990s that researchers like Shuji Nakamura finally cracked the problem using gallium nitride. This breakthrough was so important that it led to the 2014 Nobel Prize in Physics.
#knowmore
AmjadAli
npub16e…57q84
2026-05-06 05:44:56 UTC
Author Public Key
npub16e78xnqakranpdn4p2w30j3tsg9vxjwaz8mlc2d4py76t0lycm4qp57q84Seen on
wss://nos.lolPublished at
2026-05-06 05:44:56 UTCEvent JSON
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"content": "LED bulb.\nThe first visible LED was actually created by accident, and it was red only. In 1962, Nick Holonyak Jr. developed the first practical visible-spectrum LED while working at General Electric. But for decades after that, LEDs could only produce red (and later green) light.\n\nThe strange part? Scientists struggled for over 30 years to create a blue LED, which is essential for making white light (the kind used in modern bulbs). Without blue, you simply can’t produce true white LED lighting.\n\nIt wasn’t until the 1990s that researchers like Shuji Nakamura finally cracked the problem using gallium nitride. This breakthrough was so important that it led to the 2014 Nobel Prize in Physics.\n\n#knowmore ",
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