Live data from Hacker News

LK-99 isn’t a superconductor

nature.com

351–360 of 754 posts

Re: LK-99 isn’t a superconductor

#351

Earlier quoted context omitted.

I think this kind of excitement followed up with "wasn't anything after all" is both dangerous and wrong. When science is done badly (which arguably shouldn't be considered science), which then leads the public to have elevated expectations, only then for science to be done right and disprove and reject the original "findings", public trust in science is ever so slightly damaged.

public trust in science is ever so slightly damaged This is just another example of the media’s negative effect on society. Similarly, the media endlessly poring over every detail of the Ukraine war has likely made their job much more difficult because it damages the element of surprise. The media originally began as something quite negative with what we called “yellow journalism.” Then for a century or so we saw a k…

I don’t think you can blame the media for this one. I heard very little to nothing about LK-99 from the news or the regular people in my life. But I heard a ton about it from my “tech” friends that spend a lot of time on Twitter, and HN.

Re: LK-99 isn’t a superconductor

#352
post #96
post #14

In their preprint, the Korean authors note one particular temperature at which LK-99’s showed a tenfold drop in resistivity, from about 0.02 ohms per centimetre to 0.002 ohms per cm. “They were very precise about it. 104.8ºC,” says Prashant Jain, a chemist at the University of Illinois Urbana–Champaign. “I was like, wait a minute, I know this temperature.” The reaction that synthesizes LK-99 uses an unbalanced recipe…

[deleted]

[deleted]

Re: LK-99 isn’t a superconductor

#353

I felt like folks were getting too optimistic in the early days and now I feel folks are getting way to pessimistic. We don't know if any of these failed replication experiments actually made the same LK-99 the Korean team did. The only way of knowing for sure if LK-99 is a room temp superconductor is if outside labs test the samples the Korean team has made . It's entirely possible that the exact impurities in their…

[deleted]

Re: LK-99 isn’t a superconductor

#354

It’s disappointing news but the excitement and amount of replication on this paper was pretty fun to witness and experience. To me the most interesting part was everyone talking about potential consequences, uses, the order of magnitude improvements we’d see in certain costs or areas. Pumps, MRIs, power grids, chips, etc. Great reminder what materials science can do to some underlying economics.

I enjoy the optimistic takes as well. I think it's really fun to imagine incredible new materials that change our baseline capabilities in design and manufacturing. All that said, there's also a case for saving all that energy by seeking out skeptical points of view. See thunderf00t's video from 5 days ago: https://youtu.be/p3hubvTsf3Y All in all, I appreciate that so many people are enthusiastic about one thing in p…

The analysis in the video is good, like most of his videos. But I hope someone makes a roge tldwthunderf00t channel, that cut all the parts he repeats and when he laugh of people. A video with the same content and 1/2 of the length would be better.

Re: LK-99 isn’t a superconductor

#355

Earlier quoted context omitted.

Jeez— it's almost like few people around here are physicists, consider physicists credible on their specialty, saw physicists excited by the potential, and get excited by exciting things. What a shamefully foolish intellectual failure!

As noted by the sibling comment, the physicists (especially those who specialized in superconductor research!) were the ones who were the most skeptical of the announcement, partially because claims of room-temperature superconductors are actually relatively common, and partially because the evidence in the paper was just atrociously bad [1]. One of the things I look forward to in an HN discussion is the comments of…

I have no qualms one way or another, but afaik conductivity in small samples is insanely hard to properly measure even when the synthesis process is more deterministic/efficient.

That’s why many started with dimagnetism indeed.

Re: LK-99 isn’t a superconductor

#356
post #41

Honestly, I feel bad for the original authors, who were correctly holding out for stronger evidence but were forced into publishing early by the actions of a third party going behind their backs. I hope they don't experience undue blowback because of this.

[deleted]

Re: LK-99 isn’t a superconductor

#357

Just a reminder that’s not everything one can find in a paper (never mind a preprint) is true. The response from the community was great. Modellers doing some electronic structure calculations, synthesis experts trying to re-create the material, people doing all sorts of characterisation. The closest parallel I can think of is the faster-than-light neutrinos from a couple of years ago. Except that this time there wer…

[deleted]

Re: LK-99 isn’t a superconductor

#358
post #9

Good science takes time. Anyone making definitive claims, including this article, is full of it. LK-99 is probably not a super conductor, key word probably. It’ll be definitive when the original samples have been independently tested.

[deleted]

Re: LK-99 isn’t a superconductor

#359

You know what? I needed that saga. That was fun. I don’t think I’ve been this interested in any research project since being a kid skimming thru popular science or something :) It’s been so cool to see all of the replication studies, people talking about the latest news and all of that. Kind of a peek behind the scientific curtain to see all of the work that goes into confirming claims.

[deleted]

Re: LK-99 isn’t a superconductor

#360

One of the good things that came out of this whole story: A very public demonstration, transported through mass and even social media channels, how empiricism and the principle of falsification work, and why they are the only known reliable process for generating knowledge.

[deleted]
Post reply on HN