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Successful room temperature ambient-pressure magnetic levitation of LK-99

arxiv.org

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Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#311

Post by [deleted] »

dclowd9901 wrote: post #286
nindalf wrote: post #267

Earlier quoted context omitted.

Auctions, sanitary towels, retirement, banking, disposable razor, sewing machine, canned food, interchangeable parts, antibiotics, solar cells, postage stamp, light bulb, pencil, air conditioning, insurance, dwarf wheat, spreadsheet, cold chain, double entry book-keeping, S-bend, infant formula, clocks, public key cryptography, passports, batteries, printing press, video games, GPS, contraceptive pill, shipping conta…

I’ll add some more: Language, standards, the internet, agriculture, glass, sunscreen, resilient rice, sterilization, human flight, spontaneous development of sentient life in the universe… When you think about it all, you start to appreciate how miraculous things actually are.

[deleted]

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#312

Post by frisco »

caconym_ wrote: post #28
cypherpunks01 wrote: post #21

Why are folks trying to prove that this material is a superconductor in roundabout ways, like levitation, dimagnetism, etc? What is the reason they don't just test to see if electrical current flows without resistance? Surely there is something I am missing here.

I have heard people much more knowledgeable than me say that measuring true zero resistance is actually quite difficult and takes some degree of specialized equipment, especially with such small samples. That may be part of it.

Right, if our best regular conductors (used in your ohmmeter) are ~10^-8 and superconductivity is (by convention) less than 10^-11, one can see right away the simple regular methods won’t work and some cleverness is needed.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#313

Post by lottin »

ChicagoDave wrote: post #292
ChuckMcM wrote: post #129

For those experiencing this type of "black swan, but good" event for the first time, it is helpful to recognize that the human tendency to believe that all future "big events" will be dystopian downers, is statistically unsound. For a while I've kept a list of the things that could be "good" swan events, but to be fair I didn't have "room temperature superconductor on that list" :-) Other things that could happen: 1)…

1. Anti-gravity 2. Light year capable transport 3. Inertia dampers 4. Mass scale carbon capture technology 5. Robots to prepare space for habitation 6. World recognition to manage resources globally

> 6. World recognition to manage resources globally

Do you mean communism?

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#314

Post by mycall »

heisenzombie wrote: post #248
soulofmischief wrote: post #229

I'm looking forward to experiments with LK-99 and twistronics. What a time to be alive. https://en.wikipedia.org/wiki/Twistronics . https://arxiv.org/ftp/arxiv/papers/2101/2101.04501.pdf

I think LK99 is a 1D — not 2D — material.

I still don't understand 0D and 1D. Quantum dots, nanoparticles.. are they really 3D but too small to measure?

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#315

Post by UsedToDoNuclear »

ChuckMcM wrote: post #129

For those experiencing this type of "black swan, but good" event for the first time, it is helpful to recognize that the human tendency to believe that all future "big events" will be dystopian downers, is statistically unsound. For a while I've kept a list of the things that could be "good" swan events, but to be fair I didn't have "room temperature superconductor on that list" :-) Other things that could happen: 1)…

Well conveniently, "room temperature superconductor" directly supports #2

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#316

Post by donny2018 »

spaceman_2020 wrote: post #253
ChuckMcM wrote: post #129

For those experiencing this type of "black swan, but good" event for the first time, it is helpful to recognize that the human tendency to believe that all future "big events" will be dystopian downers, is statistically unsound. For a while I've kept a list of the things that could be "good" swan events, but to be fair I didn't have "room temperature superconductor on that list" :-) Other things that could happen: 1)…

4) A cure for cancer

Unfortunately, "cancer" is not one thing. We have to find different cures for many specific cancers.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#317

Post by smsm42 »

nindalf wrote: post #267
someplaceguy wrote: post #141

Earlier quoted context omitted.

It would have been more convincing if you had given real past examples rather than speculative future ones :) Although I'm pretty sure there are plenty that many people can think of, so it doesn't really detract much from your point.

Auctions, sanitary towels, retirement, banking, disposable razor, sewing machine, canned food, interchangeable parts, antibiotics, solar cells, postage stamp, light bulb, pencil, air conditioning, insurance, dwarf wheat, spreadsheet, cold chain, double entry book-keeping, S-bend, infant formula, clocks, public key cryptography, passports, batteries, printing press, video games, GPS, contraceptive pill, shipping conta…

But other than that, what the Romans have ever done for us?!

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#318

Post by q7xvh97o2pDhNrh »

CSMastermind wrote: post #179
xvector wrote: post #143

Earlier quoted context omitted.

I'd go as to far as saying GPT-4 is capable of fairly complex reasoning, at least in my experience tossing complicated questions and situations at ChatGPT Plus.

When I was tutoring people in college for their computer science classes I was struck with how some people could do reasonably well on programming assignments and then when presented with anything even slightly novel would be completely unable to reason their way to a solution. A classic tell of this is people handling out of bounds errors in loops by trying to randomly add or subtract 1 from their for-loop parameter…

> the handwringing you see on programming forums about the 'leetcode grind'

In fairness and compassion to that crowd, a lot of it comes from the fact that a modern interview for a coveted FAANG job often requires 1-2 LC Medium (or Hard) problems cranked out in 45-60 minutes. Depending on the company and the org, the overall interview loop may well be multiple such one-hour sprints.

It's quite a pressure-cooker of an interview setting. Given that, it's understandable why many people converge on memorizing and brute-force pattern-matching as their interview strategy — if they can just memorize enough, the odds are actually pretty decent. (And the payoff is not bad, either.)

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#319

Post by tzs »

dclowd9901 wrote: post #286
nindalf wrote: post #267

Earlier quoted context omitted.

Auctions, sanitary towels, retirement, banking, disposable razor, sewing machine, canned food, interchangeable parts, antibiotics, solar cells, postage stamp, light bulb, pencil, air conditioning, insurance, dwarf wheat, spreadsheet, cold chain, double entry book-keeping, S-bend, infant formula, clocks, public key cryptography, passports, batteries, printing press, video games, GPS, contraceptive pill, shipping conta…

I’ll add some more: Language, standards, the internet, agriculture, glass, sunscreen, resilient rice, sterilization, human flight, spontaneous development of sentient life in the universe… When you think about it all, you start to appreciate how miraculous things actually are.

Sanitation, medicine, education, wine, public order, irrigation, roads, fresh water system, and public health.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#320

Post by amrocha »

avereveard wrote: post #264
MissingAFew wrote: post #171

Earlier quoted context omitted.

I honestly can't comprehend how anyone wound think having a monopoly on a material is valid. They will make money without being the cartel of the superconducting sector.

Patent have reasonable terms. They will have a 20 year head start and then everyone will be competing with them. It's something that will be free in the same lifetime as the researchers, most likely. It's not abusive like current copyright that locks ideas for two generations.

Just to be clear: you're arguing that it's actually a good thing to deliberately slow down application of a revolutionary technology, so that people can make money?
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