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Thread: Cool Science thread
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05-18-2021, 01:53 PM #1026
Someone tell these folks that "optical rectenna" is a highly misleading name: https://techxplore.com/news/2021-05-...rectennas.html
Rare earth-free electric motors expected to be in mass production in approximately two and a half years: https://techxplore.com/news/2021-05-...r-require.html
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05-18-2021, 01:56 PM #1027
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05-19-2021, 06:41 AM #1028
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05-19-2021, 11:05 AM #1029
Holy shit, coin cells to market late this year or early next year and automotive pouch cells planned to roll out in early 2024. If that actually happens, and if the mass production estimate for those rare earth-free electric motors actually happens, you're talking about a seismic shift in electric vehicles by 2025.
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05-19-2021, 12:29 PM #1030
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05-19-2021, 01:26 PM #1031Registered User
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Fingers crossed China doesn't buy it all up and bury it, or kidnap/poison/kill all the company personnel.
But yeah - truly seismic if true and allowed to proceed smoothly.
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05-20-2021, 03:35 PM #1032Merde De Glace On the Freak When Ski
>>>200 cm Black Bamboo Sidewalled DPS Lotus 120 : Best Skis Ever <<<
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05-21-2021, 08:08 PM #1033
This was a cool 15 minutes to spend.
https://neal.fun/deep-sea/
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05-24-2021, 02:10 PM #1034
for Buster
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05-24-2021, 02:49 PM #1035
A lot of that stuff got covered in our math 113 class at Reed circa 1975.
Zorn's lemma, the Axiom of Choice, Well Ordering, Tukeys' lemma, Godel incompleteness all got touched on while the course built, from basic axioms, the complex numbers.
Learning that sets have subsets and elements, but a set cannot be an element of another set and the notion of classes.
Turing's work was mentioned, but wasn't part of homework.
It blew my mind, I had never seen anything like it after tweezing around in "advanced" math during high school.
So I became a math major. It was an awesome program, but I still can't count.Merde De Glace On the Freak When Ski
>>>200 cm Black Bamboo Sidewalled DPS Lotus 120 : Best Skis Ever <<<
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05-25-2021, 08:29 AM #1036Aim for the chopping block. If you aim for the wood, you will have nothing. Aim past the wood, aim through the wood.
http://tim-kirchoff.pixels.com/
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06-03-2021, 10:36 AM #1037
I loved it, the wife and kid did not. They didn't like it because they couldn't understand it; I liked it because I couldn't understand it.
Bill Gates and Warren Buffet are going to build an advanced nuclear reactor in Wyoming: https://www.msn.com/en-us/news/world...cid=uxbndlbing
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06-08-2021, 03:22 PM #1038
UCLA lab confirms the mechanism for electron acceleration in aurora. Surf's up on the Alfvén waves.
https://phys.org/news/2021-06-physic...ce-auroras.amp
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06-08-2021, 04:13 PM #1039Registered User
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06-08-2021, 04:18 PM #1040Registered User
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https://www.cnn.com/2021/06/07/weath...scn/index.html
edit: looks like the same thing that was posted above
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06-09-2021, 08:12 AM #1041Registered User
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And there's this, more self fertilizing food crops coming soon https://www.smithsonianmag.com/scien...G95h0FdBUsRoak
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06-09-2021, 08:39 AM #1042
It's a rough watch with what felt like a lot of holes in the explanations. What I basically got out of it was there is no way to accurately describe math with a hard and fast set of rules that cannot be undone with some kind of extreme case situation. This breaks mathematicians because they're looking for a perfect system description and pure logic, but they aren't there yet without some amount of self-reference and paradoxes. For just about all math us non-scholars do, math is just fine.
The description of the z= 0.xxxxxxxxxx and z1 = 0.xxxxxxxxx +.yyyyyyyyyy model creating and infinity that was larger than infinity seemed like a pedantic argument. Infinity by definition is limitless, as in it goes FOREVER WITHOUT STOPPING. They just didn't realize FOREVER WITHOUT STOPPING applies to both sides of the decimal point and it scared them into thinking they found something. Going back to a favorite quote “Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.”
We might just not have the understanding of how math fully works. We may not have the words or system to describe it. That's ok, that's science. Prove what you can, theorize about the rest and continue to improve the proofs you can to expand the knowledge base.Wait, how can we trust this guy^^^ He's clearly not DJSapp
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06-09-2021, 10:36 AM #1043
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06-18-2021, 08:46 AM #1044
Researchers find crayfish become more bold from the level of antidepressants currently in the water supply. They stay out 4x longer looking for food, which subjects them to increased predation
https://apple.news/A4meW5n96RM2fdXz2UFEoyQ
Not totally real world testing but pretty close
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06-18-2021, 10:19 AM #1045
Yeah, Godel's basic point (incompleteness) is that in any logical system, there are true statements that can't be proved to be true.
But if there is a proof of something, great. They can be improved and lots of times they are, like Burnsides Theorem (https://en.wikipedia.org/wiki/Burnside%27s_theorem). That was given to us as a finals problem as sophomores when we didn't know what it was. I couldn't do it and nearly dropped out, I had no idea how hard the problem was. The professor was trawling for a prodigy.
But the issue is that for unproven things, there's no way of knowing whether they are provable or not. So any attempt at expanding what's known may be futile. Back in those days of study and consumption of psychedelics, I extracted some mad satisfaction out of thinking that 'futility is no excuse for not trying'. That still gets me through some dark times.
I liked Cantor's stuff and the idea of countability, the notion that there's lots of different kinds of infinity.
I wish I had been better at that stuff, but I was second rate, so I turned to programming for a living.Merde De Glace On the Freak When Ski
>>>200 cm Black Bamboo Sidewalled DPS Lotus 120 : Best Skis Ever <<<
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06-22-2021, 08:47 AM #1046
https://www.nytimes.com/2021/06/22/s...-eat-land.html
A moray eel has a second set of jaws in its throat to capture & swallow prey
And they will leave water to get food
Nightmarish!
(With goofy subtitle: When an Eel Climbs a Ramp to Eat Squid From a Clamp, That’s a Moray)
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06-22-2021, 09:45 AM #1047man of ice
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06-22-2021, 09:47 AM #1048man of ice
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06-22-2021, 10:03 AM #1049
I checked and it didn't happen Some are saying 2030 maybe when Ohio has an 8 month growing season.
A few people feel the rain. Most people just get wet.
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06-27-2021, 06:05 PM #1050
This is going to be revolutionary. Not kidding
https://www.globenewswire.com/news-r...py-for-Tr.html
Clif Notes: Using a precision enzymatic approach called CRISPR, this new technology can be administered therapeutically and specifically to the liver to inactivate an aberrant gene called TTR which is the cause of Transthyretin Amyloidosis. The promise for the future is repair of gene defects associated with disease, starting with other monogenic disorders. In my line of work I've heard CEO's claim their technology will be revolutionary a billion times, yet this time feels very different. Big step forward.
“These are the first ever clinical data suggesting that we can precisely edit target cells within the body to treat genetic disease with a single intravenous infusion of CRISPR. The interim results support our belief that NTLA-2001 has the potential to halt and reverse the devastating complications of ATTR amyloidosis with a single dose,” said Intellia President and Chief Executive Officer John Leonard, M.D. “Solving the challenge of targeted delivery of CRISPR/Cas9 to the liver, as we have with NTLA-2001, also unlocks the door to treating a wide array of other genetic diseases with our modular platform, and we intend to move quickly to advance and expand our pipeline. With these data, we believe we are truly opening a new era of medicine.”
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