Submitted by undergroundgeek t3_zr9n8b in todayilearned
Little known fact, early red LEDs were shreikingly loud /s
That special was the best! Loved it as a child
I would slightly lean toward same exact bulb if you read the article. But it could be just a model it was based from? Not sure, so I had to pick. I tried to find other sources to verify but couldn’t find any. Smithsonian seemed reputable source, let me know if you find any others.
Edit: comma and more words.
Loved it as a kid. As an adult I can see it's very problematic.... But I still watch it with my kids every year so they can love it, too.
“Deviation from the norm will be punished unless it benefits us”.
Fascinating!
I doubt it was the first visible-wavelength LED, as that probably didn't put out enough light, and wasn't completely packaged either.
See photo on top-right of page 965: https://www.cambridge.org/core/services/aop-cambridge-core/content/view/8A20CA7B75C337853C5328449851A663/S088376941200262Xa.pdf
Those first-gen production red LEDs sold for about $260 each
Like the shrieking sun in Rick and Morty?
I have never heard Rudolph's nose referred to as 'bioluminescent'
Comments you can hear
Bit of a longer video, but this lady has one of the best collections of early LEDs and other light and display elements and makes some very interesting videos
Who invented that LED? GE. It was visible, from your article "Within months of the invention, General Electric was selling Holonyak’s red LEDs"
And was there any connection?
"...points out that the television special, bankrolled by GE for its General Electric Fantasy Hour, took about 18 months to complete and cost more than $500,000 to produce, an amount that would exceed $4.5 million today."
Rudolph could have had one of RCA's green LEDs - 1958. And RCA had blue in 1972.
Rudolph figure had "lost" its nose when it came to Antiques Roadshow in 2006, or maybe just resold in 1965?: https://www.youtube.com/watch?v=0t0GaNTdZA8 - it then auctioned for $400000, (but that didn't keep some slimebag Christmas museum from keeping their $20000 gofundme donations to acquire it.)
I think you missed the point of the outcome of the island of misfit toys story.
Fun fact; originally they were left behind. Them being given to kids was added later because it made kids sad.
General electric also makes the GAU-8 auto cannon and washing machines
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They make Christmas 🎄
Go and watch the ending, you know that misfit bird that can’t fly? They toss him out of the sleigh without an umbrella! He just gets yeeted to his death.
I watch it every year, and every year I’m still taken aback by how almost everyone in Christmastown is a gigantic asshole.
Who says it is?
It's not wrong, but it kind of spoils the magic doesn't it?
I was responding to someone who said it was. Somehow I posted instead of a reply
Nope, kids book from 1939.
Make good turbine engines too.
I call BS on the bulb being LED. I’ve read multiple books and articles about the production and never heard that a cutting edge light for the time was used. All reports I read were that it was a 12 volt incandescent bulb connected to a battery from a wire running through his leg. Also, it’s pretty clear the light ramps up and down like an incandescent bulb, unlike an LED.
Nice!
The meter would work a little better as
Thanks for creating L-E-Ds
Like a lightbulb!
It implies bacteria are responsible though? That - doesn’t sound right? Come to think of it, I’ve never given any serious thought to what it might be. Magic I suppose.
Really kinda weird seeing 'bioluminescent' up there
Searched for “bioluminescent reindeer” after this, was not disappointed
GE doesn't make either of those now.
GE made the original GAU-8s, but GE sold that part of the company to Martin Marietta in 1993. Martin Marietta was bought by Lockheed in 1995 to from Lockheed Martin, and then Lockheed Martin sold it General Dynamics 1997.
Similarly GE once made washing machines, but the appliances part of GE was sold to Haier in 2016.
> It implies bacteria are responsible though?
Not at all. There are tons of non-bacteria bioluminescent organisms.
The example that leaps to mind being fireflies.
Oh I see, I always misunderstood that term then
> Rudolph could have had one of RCA's green LEDs - 1958.
You're confusing things here: RCA had a patent for an infrared LED in 1958 (developed by Braunstein Rubin and Egon Loebner, and documented in US Patent 3102201). RCA also had a Green LED in the 70's (US Patent 3819974) but that was a different technology developed by a different group of people.
Yeah, LED seems absolutely wild to me when stained glass incandescent would have worked great. However PID dimming was possible at the time.
Bless you. No one has an ear for meter
That was written as an assignment for the Montgomery Ward department store.
Knew it was gonna be Fran before I clicked. Great channel and genuinely kind woman.
It seems so, bio means life and luminescent means to produce light so it's simply any living organism which can produce light.
Before this people just lit their Christmas trees on fire
I’ll have to rewatch but I think in some scenes you can see the filament of the bulb.
Yeah, now it seems obvious... I just always figured it needed some symbiotic bacteria existing within an organism. Huh. Thanks man, every day is a school day.
What's problematic about it?
We're rapidly approaching the point where GE doesn't make anything at all. They've been selling divisions faster than they've been selling products. The only thing left will be the jet engine line.
https://www.cnn.com/2021/11/09/investing/ge-split/index.html
Dr Holonyak died earlier this year at the age of 93.
It's an understandable assumption IMHO. My mind goes directly to algae when bioluminescence is mentioned, simply because it's the only form I've seen firsthand, and was around it quite a bit.
I would be curious when these first started appearing in homes. Wikipedia just focuses on the research rather than the rollout in products.
I figure stereo equipment is a good place to look, and just a quick scan suggests manufacturers weren't putting LEDs in until around 1975. Here's a deck from 1975 that was using the bulbs.
I saw that as well when trying to find more info. Surprised this TIL info wasn’t mentioned on his page.
LEDs are solid-state Diodes, not bulbs. Bulbs are fragile glass things which break when dropped. LEDs are chip's embedded in plastic.
I think early LEDs were more commonly used as point illumination.
I have a 1978-model reciever that uses red LEDs for input indicators, but bulbs for lighting the meters and dial scale.
Well now I might have to watch it again. That'll make it fun to point out to my wife.
Thanks :D
sounds like a good AI prompt.
LEDs are often enclosed in bulbs to diffuse the light and protect the chip(s).
The term LED light bulb seems like a misnomer to me. Simply LED seems right.
The epoxy covering could be called a bulb could it not?
Yeah, just saw a video about the restoration of the puppet and they said the bulb damaged the head, leds don't get that hot.
Good observation
spkingwordzofwizdom t1_j12e6t8 wrote
Then all the investors loved him,
And they shouted out with glee.
Hey Nick Ho-lo-ny-ak,
Thanks for creating L-E-Ds!
EDIT: Edited for the musicians in the crowd...