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

arxiv.org

921–930 of 1001 posts

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

#921
post #768

Earlier quoted context omitted.

Magnus Carlson said that if you tell him there’s a winning move on a chess board he could find it very quickly, because his focus becomes extremely narrow. I wonder if something similar is happening here. Since the scope was defined as LK-99, it becomes a narrow query instead of a broad one.

This is not just telling someone there's a winning move. It's telling them that X is a winning move and they just have to verify that X is indeed one. Many, many problems are such that it's difficult to find a solution but easy to verify one.

I know nothing about this but I stay curious. Just like Navier-Stokes equations can be proved with numerical approximations, can this be verified even if we never solve it?

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

#922
post #768

Earlier quoted context omitted.

Magnus Carlson said that if you tell him there’s a winning move on a chess board he could find it very quickly, because his focus becomes extremely narrow. I wonder if something similar is happening here. Since the scope was defined as LK-99, it becomes a narrow query instead of a broad one.

This is not just telling someone there's a winning move. It's telling them that X is a winning move and they just have to verify that X is indeed one. Many, many problems are such that it's difficult to find a solution but easy to verify one.

True, but in this instance it’s my understanding that there were still some areas of guesswork where the paper wasn’t clear.

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

#923

Earlier quoted context omitted.

This is a quite biased view. As a non-Chinese scientist, I can attest that there is intense pressure to publish as many papers as possible pretty much everywhere , and this leads to a problem of bad research across the world. China may be among the worst offenders in this respect, but the particular thing the OP is asking about doesn't strike me as a Chinese-specific thing at all. I see non-Chinese scientists rushing…

China publishes more science research with fabricated peer-review than everyone else put together https://qz.com/978037/china-publishes-more-science-research-... I respectfully submit that you may be providing an anecdotal experience. It’s so bad that China’s courts have called for the death penalty for scientific fraud. https://www.statnews.com/2017/06/23/china-death-penalty-rese... Goodness me.

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

#924

Earlier quoted context omitted.

This is a quite biased view. As a non-Chinese scientist, I can attest that there is intense pressure to publish as many papers as possible pretty much everywhere , and this leads to a problem of bad research across the world. China may be among the worst offenders in this respect, but the particular thing the OP is asking about doesn't strike me as a Chinese-specific thing at all. I see non-Chinese scientists rushing…

China publishes more science research with fabricated peer-review than everyone else put together https://qz.com/978037/china-publishes-more-science-research-... I respectfully submit that you may be providing an anecdotal experience. It’s so bad that China’s courts have called for the death penalty for scientific fraud. https://www.statnews.com/2017/06/23/china-death-penalty-rese... Goodness me.

Nice to see a government that takes science seriously. In the US if you fake data you can become president of Stanford (for a while).

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

#925

On the following suppositions: 1: Superconductivity becomes widely confirmed 2: Reproducibility remains microscopic Imagine a game of rolling a collection of n dice (normal 6 sided), where the player wins if all N dice are 4 or higher (probability 1/2 for a single dice). Then the probability of a lucky roll is P = (½)ⁿ So the smaller the collection of dice the more likely a lucky roll becomes. Consider a hypothetical…

Consider the work of C. V. Boys. https://en.wikipedia.org/wiki/C._V._Boys Especially: "On the Production, Properties, and some suggested Uses of the Finest Threads." 1887 https://zenodo.org/record/1431517/files/article.pdf This is a very entertaining read, and highly recommended. He produced extremely fine threads of glass, quartz, etc. finer than the visible light diffraction limit. (Which he would use to construct…

_Perhaps this can be modernized to vacuum or inert atmosphere, melt the quasi LK-99 sample until it beads, then shoot away. Rewind the resulting thread and re-anneal any non-superconductive segments._

Another use-case for the Baltimore shot tower (https://en.wikipedia.org/wiki/Phoenix_Shot_Tower)

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

#926
post #914

Earlier quoted context omitted.

Or they are holding the details of their process close to their chest, in anticipation of a lucrative spin-off.

A breakthrough of this kind should be illegal to patent

Why do you think so?

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

#927

Earlier quoted context omitted.

This is a quite biased view. As a non-Chinese scientist, I can attest that there is intense pressure to publish as many papers as possible pretty much everywhere , and this leads to a problem of bad research across the world. China may be among the worst offenders in this respect, but the particular thing the OP is asking about doesn't strike me as a Chinese-specific thing at all. I see non-Chinese scientists rushing…

China publishes more science research with fabricated peer-review than everyone else put together https://qz.com/978037/china-publishes-more-science-research-... I respectfully submit that you may be providing an anecdotal experience. It’s so bad that China’s courts have called for the death penalty for scientific fraud. https://www.statnews.com/2017/06/23/china-death-penalty-rese... Goodness me.

> It’s so bad that China’s courts have called for the death penalty for scientific fraud.

To add some context, the death penalty is used much more widely in China than a Westerner might realize, so to them this idea is not quite as radical as it might seem. The PRC government is a bit tight lipped about exact policies, but it's known the death penalty gets employed for things like corruption and even major economic crimes like fraud or money counterfeiting. And of course drug offenses and the violent crimes.

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

#928
post #871

Earlier quoted context omitted.

> this pushes my odds above 50% for the first time. Time for you to make some money then? :D https://polymarket.com/event/is-the-room-temp-superconductor...

The sensible thing would be to bet against it - as shown by xkcd Did that site predate https://xkcd.com/955/ or was it inspired by it?

The author of that comic did not invent prediction markets.

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

#929
post #470

Earlier quoted context omitted.

Things also tend to be invented at about the same time at different places. I wonder if there are other people who were this close to invent it but just couldn't get it right.

Last year I read The Double Helix and The Code Breaker within a few months of each other, and what really stood out to me is that while we celebrate the first person who discovers something, in reality there were several teams all racing to the finish line, and were sometimes days or only even hours behind in presenting their findings. Yet only one team gets the accolades and their names in textbooks, the others are…

A community of giants. Winner takes all is not fair, but it is very motivating to the vanity of human nature. i.e. untrue, but effective

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

#930

So what the heck has happened with LK-99 really? (Disclaimer: I'm no physicist nor chemist, but I have co-written a report on three LK-99 papers [1] and am tracking the Twitter discussion as much as I can. I also got some help from knowledgable friends---much thanks for proof-reading.) It turned out that LK folks were not talking about some stupid shit. Specifically they were one of the last believers of long-forgott…

There is a tendency to call any scientific work that came out of anywhere in the former USSR as "Russian". Nikolay Bogolyubov is probably at least as "Ukrainian" as "Russian": he grew up and went to university in Kyiv, became a member of the Academy of Sciences of the Ukrainian SSR, and now has a physics institute named after him in Kyiv (and another in Moscow) -> https://www.encyclopedia.com/science/dictionaries-the…

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