Timsup2nothin
Deity
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TIL: Today I Learned
- Thread starter Cutlass
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TIL about hydrocopters which are an amphibious vehicle mainly used in Arctic regions and I'd never heard of before.
https://en.wikipedia.org/wiki/Hydrocopter
https://en.wikipedia.org/wiki/Hydrocopter
You've just proven that you are up to the challenge of being allowed into this collaborative effort.
dusters
Emperor
I can be a man if I want. I mean, if I want.
Now that regular cars have so many luxuries, I was curious what the supercars were up to.
No windshield!
Carbon body.
3-D printed titanium.
Sucks being a peasant.
Here are some sorcerous windows.
How do you 3D print titanium?
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hobbsyoyo
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Metal powder with a laser that sinters it together.
You have a thin layer of powder and run a laser over it in the pattern of the first layer you want to build up. Then you wipe away the old powder and put a fresh layer on top and laser again. Repeat for a day or so and then you're done. Well, typically you'll put the part into an acid bath to eat away any support structures and to give it a nicer finish. You can also put it in a traditional machine for other surface finishes as well.
This creates a metric poop-ton of wasted, partially-sintered powder. Some companies work really hard to try and save and reuse it with various levels of success.
We made rocket engine parts like this at SpaceX for Dragon 2.
Berzerker
Deity
https://phys.org/news/2020-03-global-human-genomes-reveal-rich.html
Neanderthal DNA found in Africans... It was thought anatomically modern folk left Africa encountering Neanderthals along the way, but apparently there was 'backflow' into Africa either from Neanderthals or by people who left Africa, interbred with Neanderthals, and then returned to Africa.
Since the ancestors of Neanderthals and Denisovans left Africa at earlier dates, and those peoples shared African DNA, I'm not sure how they know this was the result of backflow and not just a shared DNA from that earlier time.
Neanderthal DNA found in Africans... It was thought anatomically modern folk left Africa encountering Neanderthals along the way, but apparently there was 'backflow' into Africa either from Neanderthals or by people who left Africa, interbred with Neanderthals, and then returned to Africa.
Since the ancestors of Neanderthals and Denisovans left Africa at earlier dates, and those peoples shared African DNA, I'm not sure how they know this was the result of backflow and not just a shared DNA from that earlier time.
Truthy
Chatbot
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Part of the French-occupied region of West Germany, the Saar Protectorate, participated in the 1952 Olympics on its own, while the rest of West Germany was one team. East Germany didn't participate. Saarland didn't win any medals.
Which led me to learning that Saarland didn't join West Germany until 1957, after they had a referendum on whether to become some kind of pseudo-autonomous state in economic union with France. However, they rejected it and joined West Germany.
Which led me to learning that Saarland didn't join West Germany until 1957, after they had a referendum on whether to become some kind of pseudo-autonomous state in economic union with France. However, they rejected it and joined West Germany.
shadowplay
your ad here
Today I learned that because red light doesn't penetrate underwater past a few dozen feet, your blood will appear green underwater.
Spoiler :
TIL that copper has very significant antimicrobial properties, originally discovered when folks who smelted copper in the 1850s in France were mostly unaffected by cholera outbreaks. Brass and bronze ditto, though less dramatically.
aimeeandbeatles
watermelon
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Berzerker
Deity
George Patton had dyslexia, he had to memorize stuff
TIL that if you go more than a few dozen feet underwater, you turn into a Vulcan.
Saarland also participated in the 1954 World Cup qualifiers
Lohrenswald
世界的 bottom ranked physicist
they did it twice, after both wars
Berzerker
Deity
https://www.marketwatch.com/story/h...ve-traces-2020-03-25?siteid=yhoof2&yptr=yahoo
the dirtiest and cleanest foods ranked by pesticide residue
the dirtiest and cleanest foods ranked by pesticide residue
TIL that the strong garlic flavour is not present in the raw bulb, and is generated when the cells are broken, with alliinase converting alliin to allicin. Therefore to get the most "fiery" garlic blend the garlic while raw (like making toum), and if you cook them whole (thus denaturing the enzyme before the cells are damaged) they are really mellow.
I cannot believe I did not know this before, I have prepared garlic both ways and not figured out the difference. It came from new scientist, but is paywalled.
I cannot believe I did not know this before, I have prepared garlic both ways and not figured out the difference. It came from new scientist, but is paywalled.
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Morty
Prince
Which is why they're trying out using copper & brass in hospitals...in the beds, door handles, instruments, etc
https://www.washingtonpost.com/nati...251704-5beb-11e5-8e9e-dce8a2a2a679_story.html
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