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  1. #1026
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    This is pretty cool.

    Contrary to Previous Belief, Strike-Slip Faults Can Generate Large Tsunamis

    On September 28, 2018, an inexplicably large tsunami devastated the Indonesian coastal city of Palu and several others nearby. Between the tsunami and the magnitude 7.5 earthquake that caused it, some 4,340 people were killed, making it the deadliest earthquake that year.

    The tsunami's waves reached around six meters high, which was a shock to geophysicists who had believed that earthquakes along a strike-slip fault could only trigger far smaller tsunamis for that particular region. Now, new research describes a mechanism for these large tsunamis to form, and suggests that other coastal cities that were thought to be safe from massive tsunamis may need to reevaluate their level of risk.

    Most large tsunamis are triggered by earthquakes along thrust faults, where one piece of crust is shoving its way over the top of another. Motion along such a fault creates a large vertical displacement, which, when the fault is under water, generates massive waves.
    https://www.caltech.edu/about/news/c...large-tsunamis

  2. #1027
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    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

  3. #1028
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    Quote Originally Posted by Dantheman View Post
    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
    ""They go in like ghosts," said lead author Amina Belkadi"

    I bet they do...

    The floggings will continue until morale improves.

  4. #1029
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  5. #1030
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    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.

  6. #1031
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    Quote Originally Posted by Dantheman View Post
    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.
    That was my thought. Also not using rare earth in the batteries and motors would hopefully help take China out of the process.

  7. #1032
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    Nov 2008
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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.

  8. #1033
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    Merde De Glace On the Freak When Ski
    >>>200 cm Black Bamboo Sidewalled DPS Lotus 120 : Best Skis Ever <<<

  9. #1034
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    This was a cool 15 minutes to spend.
    https://neal.fun/deep-sea/

  10. #1035
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    for Buster

    life ain't guaranteed, love your people while you can

  11. #1036
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    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 <<<

  12. #1037
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    Quote Originally Posted by Norseman View Post
    for Buster

    I think I got halfway through that before my brain melted.
    Aim 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/

  13. #1038
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    Quote Originally Posted by From_the_NEK View Post
    I think I got halfway through that before my brain melted.
    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

  14. #1039
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    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
    life ain't guaranteed, love your people while you can

  15. #1040
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    Quote Originally Posted by Buster Highmen View Post
    company i work for in utah is the leading stirling engine manufacture in the world (at least I think?). It's pretty cool tech

  16. #1041
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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

  17. #1042
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    And there's this, more self fertilizing food crops coming soon https://www.smithsonianmag.com/scien...G95h0FdBUsRoak

  18. #1043
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    Apr 2021
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    246
    Quote Originally Posted by From_the_NEK View Post
    I think I got halfway through that before my brain melted.
    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

  19. #1044
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    Quote Originally Posted by gravitylover View Post
    And there's this, more self fertilizing food crops coming soon https://www.smithsonianmag.com/scien...G95h0FdBUsRoak
    Whoa.

    Quote Originally Posted by Not DJSapp View Post
    Prove what you can, theorize about the rest and continue to improve the proofs you can to expand the knowledge base.
    Perhaps Buster can chime in here, but I believe the whole point is that you can't "improve the proofs" because it's proven that some aspects of mathematics cannot be proven.

  20. #1045
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    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
    Check Out Ullr's Mobile Avalanche Safety Tools for iOS and Android
    www.ullrlabs.com

  21. #1046
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    Quote Originally Posted by Dantheman View Post
    Perhaps Buster can chime in here, but I believe the whole point is that you can't "improve the proofs" because it's proven that some aspects of mathematics cannot be proven.
    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 <<<

  22. #1047
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    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)

  23. #1048
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    Quote Originally Posted by ::: ::: View Post
    (With goofy subtitle: When an Eel Climbs a Ramp to Eat Squid From a Clamp, That’s a Moray)
    Come on man, the eels are interesting but the subtitle (and the continuation of it through the article) is pretty great.

  24. #1049
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    Quote Originally Posted by gravitylover View Post
    And there's this, more self fertilizing food crops coming soon https://www.smithsonianmag.com/scien...G95h0FdBUsRoak
    I wonder what happened - the article is from 2018 and said they might be bringing it to market in 2019. Somebody google that for me.

  25. #1050
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    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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