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The first room-temperature ambient-pressure superconductor?

arxiv.org

711–720 of 906 posts

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

#711

Earlier quoted context omitted.

> Fusion energy production doesn't (really) have that equivalent. It does, actually. It's the miniaturization that's the hard part.

> it's the miniaturization that's the hard part We don't have a working fusion system to miniaturize. Stellar fusion happens at much lower temperatures than what we're trying to do on Earth.

He’s referring to a “Hydrogen bomb”.

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

#712
post #684

Earlier quoted context omitted.

I will say this, I haven't found the "it's not real" responses very compelling either. I've also found that people who actually work in the field seem less skeptical than knowledgeable people adjacent to the field. If it's not fraud, it's at least something new. Here are the reasons I've seen provided by adjacent folks: Nonscientific objections: * it was published in a low h-index journal (not a scientific objection)…

The trouble with the shown videos is that with a limited perspective, they do look a lot like the sort of single-camera trick that a lot of "free energy" device videos use - e.g. [1] Fortunately if we're dealing with a real effect, this will be easily replicated and proven. But with the fixed perspective of a video, you can create a large number of apparent effects that look real in the constraints of the video forma…

I mean sure, it would not be hard to fake this if it's a total fraud. It will also be discovered almost instantly so I don't find that case interesting. The more interesting question to me is, (1) are there glaring red flags indicating it's a fraud (no), and (2) if it's not a fraud, what are the odds that it's superconductivity? For me, seeing how weak the criticism is, I'm moderately higher on it actually being superconductivity than I was before, since alternative explanations also seem to require materials with novel properties.

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

#713

Yeah, this is a grift. https://www.wowtv.co.kr/NewsCenter/News/Read?articleId=A2015... Don't want to translate because it's a waste of time but they are using some crazy buzzwords to raise money for their unlisted stock. Gems like how they extracted some miracle material from plant matter that exhibits "Quantum Energy Living Body" and it apparently has self-healing properties and emits UVA rays (I cannot translate ho…

Not the same company, Quantum Energy Co vs Quantum Energy Research Center. Your article is from 2015 and features someone who is not involved in any of the papers or with the company.

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

#714

Yeah, this is a grift. https://www.wowtv.co.kr/NewsCenter/News/Read?articleId=A2015... Don't want to translate because it's a waste of time but they are using some crazy buzzwords to raise money for their unlisted stock. Gems like how they extracted some miracle material from plant matter that exhibits "Quantum Energy Living Body" and it apparently has self-healing properties and emits UVA rays (I cannot translate ho…

Not the same company, Quantum Energy Co vs Quantum Energy Research Center. Your article is from 2015 and features someone who is not involved in any of the papers or with the company.

you're right.

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

#715

Earlier quoted context omitted.

Ok, let me just add the obvious disclaimer: don't try this yourself unless you have a pretty good understanding of chemical lab safety. Really. It's more likely that you will contaminate your land, and possibly your neighbors land too than that you will manage to replicate it.

What do you suppose the odds are that there's a Tin-based compound instead of lead based? (Which would effectively make a bizarre form of brass a superconductor)

Bronze, right?

Brass is copper and zink.

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

#717
post #313
post #179

A sister paper [0] has a photo of the material exhibiting the Meisner effect and levitating over a magnet, and claims to have a video too. Either they blatantly photoshopped the photo or they actually made a room temperature super conductor. I can’t see how the could have made a subtle mistake that resulted in magnetic levitation at room temp without making a superconductor. [0] - https://arxiv.org/abs/2307.12037

This seems to be the corresponding video (linked in the associated media tab on arXiv): https://sciencecast.org/casts/suc384jly50n

The sheer size of the sample stuns me.

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

#718

Could someone explain why is this world changing?

Other commenters have science fiction dust in their eyes, and speak of room temp superconductors in general. But this particular discovery is a brittle crystalline structure that cannot be extruded into wires, and does not have the high current capacity required for power transmission or rail-guns. It's an important, exciting step but it's very far from world-changing at this stage. Or if it is in a limited way. The…

Oops, the first practical radios were powered by semiconductor rectifiers, not transistors. The Pickard silicon point detector circa 1906 was used in WWI (btw owning/making a radio was illegal during the war!)

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

#719
post #612

Earlier quoted context omitted.

This post is a master class in why you shouldn't get all your information from Wikipedia. Press releases are not reality. Yes the M855A1 was developed and started operational testing in 2010. However, it wasn't available to anyone who wasn't forward deployed until...my memory says 2015. The M855 is still used on post because a) it's cheap, and ballistically similar to the M855A1 and b) the production lines at Lake Ci…

I worded my original assertion the way I did (lead replaced with copper) so that it would be true even if the majority of the bullet is steel. >I get that you're trying to be snide because you were so publicly wrong, but your tone here really just makes you sound like you're trying to sound smart Right back at you. I don't think I'm motivated by trying to sound smart, but rather by curiosity about the subject. Well,…

Answering without doxxing myself is harder than I thought. The last time I was on a US military range, which to be fair was right before the pandemic so things probably have changed - we drew green tip (M855) from the range master. My understanding was that a) the steel targets were getting beat up by A1 and there wasn't any money to replace them and b) we weren't a combat group so we didn't rate the good shit.

EDIT TO ADD: I don't know if that qualifies as "quantities" and anecdotes are just that, but that's been my experience.

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

#720
post #615
post #179

A sister paper [0] has a photo of the material exhibiting the Meisner effect and levitating over a magnet, and claims to have a video too. Either they blatantly photoshopped the photo or they actually made a room temperature super conductor. I can’t see how the could have made a subtle mistake that resulted in magnetic levitation at room temp without making a superconductor. [0] - https://arxiv.org/abs/2307.12037

I'll get this out of the way first: I'm a couch scientist (even that is probably stretching it). That said, from the video it mentions the superconductor was applied as a film over copper. But wouldn't plain copper also exhibit this effect due to eddy currents? I fail to see how the (supposedly) thin film is affecting the plate in this experiment. I'm probably missing something and I hope someone can enlighten me.

In a normal conducting material eddy currents dissipate relatively quickly. The shard of material in the magnet video appears to be floating quite stably for dozens of seconds, which implies that eddy currents are not being dissipated. I'm personally excited, I think it's the real deal but with some limits on maximum field strength and current
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