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The first room-temperature ambient-pressure superconductor?

arxiv.org

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Re: The first room-temperature ambient-pressure superconductor?

#271

Post by nine_k »

WanderPanda wrote: post #256
nine_k wrote: post #223

Earlier quoted context omitted.

Maybe it could be a stabilizing factor, because the many interests involved would be mostly aligned. However unstable Middle East is, most of the time no oil well is on fire, or in a war zone.

It is not about the steady state being unstable on its own, it is about how easily it can be brought out of equilibrium with a very small force (of a hand full of people). An inherent flaw in the centralized nature of such a system

How easily Saudi oil industry could be brought out of its equilibrium?

How easy was it to do that for Kuwaiti oil industry, and how long did it last?

When enough interests are aligned, equilibria stay pretty steady, exactly because there are several powerful interests.

Re: The first room-temperature ambient-pressure superconductor?

#272

Post by lilgreenland »

solarmist wrote: post #263
XorNot wrote: post #246

Earlier quoted context omitted.

That video isn't very convincing. The usual test is that the material can float above the magnet.

The effect is weak, but seeing that it behaves the same by flipping the magnet means that it can't be a standard magnet like we're used to seeing. (If I understood some of the other comments correctly). Other comments. https://news.ycombinator.com/item?id=36867758

Copper does this already. It's not like ferromagnets. https://www.youtube.com/watch?v=sENgdSF8ppA

Re: The first room-temperature ambient-pressure superconductor?

#273

Post by tux3 »

colechristensen wrote: post #243
jacquesm wrote: post #212

Earlier quoted context omitted.

Indeed, this will change pretty much everything if true. A true room temperature / ambient pressure superconductor will cause a revolution in so many fields that I find it hard to believe. But if... Let's wait for replication before throwing a party. This is on par with the discovery of the transistor and possibly bigger.

Superconductors have a current limit above which they are no longer superconductors. It is possible that a room temperature superconductor could be created that has a limit too low to be of any practical use. It seems this is worth cautious excitement, but don't get too excited yet.

Couldn't we make really thick wires to increase the current limit :) ?

After all, there's no need for expensive cooling and the material looks reasonably cheap! (assuming it's real, of course..)

Re: The first room-temperature ambient-pressure superconductor?

#274

Post by [deleted] »

scarmig wrote: post #187
amluto wrote: post #145

Earlier quoted context omitted.

The actual picture of (poor) levitation in the paper you linked is pretty compelling. This isn’t a complex, noisy measurement showing something that’s related to superconductivity — this is a magnet and a supposed superconductor repelling each other. As far as I know, that’s possible with permanent magnets (and it would be weird, but not impossible, if the group instead synthesized a novel ferromagnet and didn’t noti…

Their other data doesn't line up with ferromagnetism, though. It's either the real thing or a big fraud. Guess we'll find out soon enough. ETA: the video referenced is apparently available at https://www.youtube.com/watch?v=EtVjGWpbE7k . Interestingly, posted on Feb 26, 2023.

[deleted]

Re: The first room-temperature ambient-pressure superconductor?

#276

Post by iopq »

carabiner wrote: post #203
fellowniusmonk wrote: post #143

Earlier quoted context omitted.

Latex is a waste of human potential. I've done professional typesetting and cataloging with QuarkXPress and InDesign both and it was extremely fast, that's for professional high quality publishing. .doc and .md is fine for information first publishing. Latex is not simple and is in my opinion just a big nerd snipe, its the intrusive thought of layout software, for humanities sake we'd be better off with simpler tools…

Reminds of "command line is faster than GUI" folks who get timed doing every task slower. "But it feels faster!"

Every task? If I want to rename all of the .pdf files in the folder to .avi I would just do it in the command line

Or would you rather have me google a GUI that lets me "quickly rename" and download a few programs that have this capability? Or do a few hundred files by hand?

Re: The first room-temperature ambient-pressure superconductor?

#278

Post by carabiner »

solarmist wrote: post #263
XorNot wrote: post #246

Earlier quoted context omitted.

That video isn't very convincing. The usual test is that the material can float above the magnet.

The effect is weak, but seeing that it behaves the same by flipping the magnet means that it can't be a standard magnet like we're used to seeing. (If I understood some of the other comments correctly). Other comments. https://news.ycombinator.com/item?id=36867758

If this enables monopole magnets?

Re: The first room-temperature ambient-pressure superconductor?

#279

Post by megaman821 »

lilgreenland wrote: post #267
megaman821 wrote: post #215

Earlier quoted context omitted.

What material and setup could even fake that result?

Well normal copper does this in presence of a strong magnet. I don't think we are seeing superconductivity, just regular copper Meissner effect. Super conductive would frame lock the copper. right?

Eddy currents have a dampening effect. I am not expert enough to say we aren't seeing that here, but it looks different to me.
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