How Blue LEDs Were Invented - LGR Tech Tales
469,471
2017-09-29に共有
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● Music used in order of appearance:
"Nautical 2" by Loscil
• Loscil - Nautical2
"Anekbah Theme"
• The Nomad Soul: Soundtrack - Anekbah ...
Downtown Alley 1, Particle Emission 2, Smooth Deal
www.epidemicsound.com/
"Twin Shine"
youtube.com/audiolibrary/music
● Sources for this episode's info:
web.archive.org/web/20141008120714/http://the-japa…
www.livescience.com/48193-how-blue-leds-changed-th…
aip.scitation.org/doi/10.1063/1.1753706
www.japantimes.co.jp/news/2002/09/20/national/cour…
www.sciencedirect.com/science/article/pii/00220248…
www.popsci.com/diy/article/2010-02/gray-matter-lig…
aip.scitation.org/doi/abs/10.1063/1.109374
www.pbs.org/wgbh/nova/blogs/physics/2014/10/how-bl…
ledmuseum.candlepower.us/1960.htm
www.ecse.rpi.edu/~schubert/Light-Emitting-Diodes-d…
www.industrialalchemy.org/articleview.php?item=529
www.newscientist.com/blog/technology/2007/04/led-o…
spectrum.ieee.org/tech-talk/semiconductors/devices…
spectrum.ieee.org/tech-talk/tech-history/silicon-r…
www.nobelprize.org/nobel_prizes/physics/laureates/…
www.nobelprize.org/nobel_prizes/physics/laureates/…
www.commercialsihate.com/the-ctrlv-game_topic4100_…
www.ledinside.com/news/2014/10/the_story_behind_sh…
edisontechcenter.org/lighting/LED/TheFirstPractica…
medium.com/starts-with-a-bang/why-blue-leds-are-wo…
www.popsci.com/article/technology/why-blue-led-wor…
www.ifsc.usp.br/~lavfis2/BancoApostilasImagens/ApC…
www.nanophotonics.org.uk/niz/publications/zheludev…
コメント (21)
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SHOUT OUT LGR FOR THE BLUE LED STORY 6 YEARS AHEAD OF VERITASIUM
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I love tech tales. It's so informative and well produced that I forget I am on youtube.
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I had no idea it took so much effort to create them. That was fascinating.
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Ah, blue LEDs and Silver painted plastic, which pretty much sums up computers in the early '00s.
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As a kid I remember reading about how hard it was to get blue LEDs to work. I was into electronics and at the time only red yellow and green LEDs were available. I wanted blue so bad. My how times have changed
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I never knew I would be so interested in a 10 minute video about blue LEDs.
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The notifications LED me to this video.
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I shall always remember the first time I ever saw a blue LED. It was the early 90's, and the children's museum had this diorama of the city with various color LEDs all around it which would periodically light up to demonstrate how the power grid worked. I had always been obsessed with LEDs, and of course had only seen the red green and yellow LEDs (you know, the LEDs they sold at Radio Shack), but when some of the LEDs lit up blue, my mind was blown.
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The blue LED: burning people's retinas due to power indicators since 1994
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Whoa. This is some serious stuff.
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I love this story. Already knew about it from prior interests, but it's great to finally have a really nicely made video about it to share around. It's hard to describe how important blue LEDs are for technology, probably because they suddenly exploded to be everywhere thanks to the efforts of all the researchers involved to make them so affordable.
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It took 86 years to make a blue LED bright enough to be usable. Now I curse them for being too bright. Do we really need power indicator LEDs that are bright enough to light up your whole room at night?
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Entertaining and informative, that's why I keep coming back to LGR!
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Now this is interesting! I had always thought that LEDs were all white light, and the color depended on what you dyed the plastics they're encapsulated in. I didn't know the diodes themselves provided the color.
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It's always the most mundane of items that have the most interesting stories.
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Dude, Clint, I had this weird dream. So I was sleeping and then you came to me and was like "Wake up, school is starting soon." and then I got ready and we sat down in your car and drove to school. When we got there you disappeared and I woke up, and the first thing I wake up to see is a new LGR video. I don't even go to school!
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That just blue me away.
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Manufacturers universally appreciate blue LEDs so much that they put them into anything you buy including switchboxes, external hard drives and even on microservers. It's going too far, if you ask me, green or red LEDs would have been better on many of these devices.
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I remember when the Radio Shack catalog listed Blue for the first time. So cool!
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I remember buying them to use back in the mid 90s. A standard red or green LED was around 2p, a blue one was £3 !, 150 times as much
