Colorado cop who left man shackled to table in the path of an industrial laser beam says it was an accident. Officer Goldfinger claims he didn’t realize the machine was on.
Just a word of caution: Non-peer reviewed, non-replicated, rushed-looking preprint, on a topic with a long history of controversy and retractions. So don’t get too excited yet.
In physics, however, using Latex is absolutely the norm, and on the arxiv it’s also absolutely the norm. That they aren’t using it shows at the very least that they’re out of touch with academic practice. I mean, if their extraordinary claim is true it would be one of the most significant discoveries of the century and pretty much a guaranteed Nobel prize. Therefore you might think they would put at least some amount of effort into presenting their results, such as producing nice looking plots, and, well, using Latex like a normal working physicist. The fact that they don’t doesn’t mean that they’re wrong, but it doesn’t exactly increase their credibility either.
PS: I also just noticed that one of their equations (p. 9 in 2307.12008) literally contains the expression “F(00l)”. Again, maybe they’re just oblivious and didn’t realize that could look like they’re calling us fools, but the extraordinary claims together with the rather unorthodox and low-effort presentation make me very skeptical.
This is fair enough…but still seems odd to judge paper solely based on text editor choice…judging paper based on clear errors in presented information is fair game.
Hi. I hold 3 degrees in engineering. 100% of what you said is wrong.
Latex is the norm in any engineering publication I’ve ever been involved with, be it as author, reviewer, or editor. The ones that do take word do so reluctantly and only in a way they can readily convert to latex later.
Judging a quality of a word based on how a paper looks is perfectly valid. I’m disinclined to trust research by people not willing to put in the minuscule effort of typesetting a paper. What else did they cut corners on?
I would also like to know. Apparently there were some proofreading errors etc. Someone in reddit explained that rushing the publish might be explained by wanting to stake the claim and get the ball rolling on reproducing the results as fast as possible.
Honestly as someone who is also in research, that is pretty understandable. Preprint papers are all subject to peer review and editing after the fact, but are a good opportunity to stake your claim on a big discovery before someone else can. Preprints are inherently not final versions and I guarantee that the mistakes will be caught before publication.
As someone that no longer has access to university library’s journal subscriptions, I very much support publishing these in a openly accessible manner.
This… this is literally revolutionary if true. Has it been corroborated by other experiments? How certain are the results? How hard is it to mass produce this? This could literally be the breakthrough of the century in materials science here.
The researchers and university are trustworthy, however this information is so new that others are still learning about. What is interesting is that the process isn’t very complicated and if you have a vacuum furnace, you can potentialy replicate their results.
the critical field and critical current seem very low … This means you can't actually push big current through this thing (yet). You can't make a powerful magnet, and you can't make viable power lines
The method to produce this material as described in the related paper [1] is fairly simple and could be done at home with a $200 home metal melting furnace from amazon and the precursors (which also seem to be fairly standard easy to obtain metals)
Read this comment thread from SC researchers: <reddit link removed>
Lots of problems with the paper, they claim. It is not up to the standards of current SC research. One of them says Dias's work shows more merit than this.
The only drawback is that LK-99 is polycristalline… Levitating trains and computers, electronics, are a stretch as long as the material is not monocristalline.
Power cables are currently (heh) designed to operate below 90degC, because after this you get thermal runaway and the conductor melts. That’s already within the operating range of this.
from what i read, it doesn’t seem like you’re able to push much current through it, which makes power cables an unlikely application in its current (heh) form
no i know many of the applications, its huge if true! i understand that, but almost everything like this comes with trade-offs, and i was wondering if there are any here that would make it non-viable for some/all applications
The claimed saturation current is very low. If this is inherent and not just a first-try thing it will be less-good than permanent magnets for doing many magnetic-field things and less-good than Aluminum for some current-carrying things.
It’s a perovskite, in semiconductor applications these have stability and durability problems.
It might also be a scam. This would make it useless.
In amongst that discussion is a lot of reason to hope this will be better, several note that the researchers made a low quality sample “spongy crap” and that in other superconductors made at that quality are just as limited, only becoming useful when better quality samples are made
“Most Americans, in fact, all Americans, are not used to doing this to go to Europe so there’s going to be lots of surprises at boarding gates with people being denied boarding over the first couple of weeks if this goes into effect.”
Maybe just require verification of the authorization to book international flight? If it says you need it to book a room, I have to imagine there's some way for airlines to verify it.
I didn’t read or watch the video yet, but if it works like the current superconductors, the magnetic fields will be repealed and cannot enter the superconductor.
However currently is it possible to make superconductors with impurities allowing the magnetic fields to enter (through the impurities) in the superconductor. This allow quantum locking / magnetic locking.
However as said above, you need a magnetic field. So either a permanent magnet or by generating one with electricity use.
Another interesting thing is that superconductors allow to store electricity for an indefinite amount of time. Like you put eletrcitiy in it and it will still be in it after 20+ years. However it is not an infinite energy. If it generates work or it is extracted from there, it will dissipate. As the energy will be used up.
If her excuse was “i didnt know i parked my car on the tracks”, she needs to have her drivers license confiscated. Someone with such little awareness of their surroundings has no business operating heavy machinery (car), let alone the responsibilities of her job.
She would not have even have had to leave the car. The railroad crossing signs are very obviously visible. And unless she had the most amazing shocks ever, she probably felt the very bumpy tracks when she went over them.
And if you point them to that, they say that illegal immigrants don’t have to that and that Europeans are killing civilization. Conservatives are really beyond saving.
Even if there was no such program, it’s EIGHT DOLLARS. Who gives a fuck? If you’re traveling to Europe from the U.S., the plane fare alone will be exponentially higher. Hell, we renewed and expedited our passports a few months ago and it cost us $500.
Hey instead of charging us regular people 8 dollars for exercising the right of migration why don’t they just raise taxes on all those shitheads flying on private jets? No?
Obviously its way past time for us to leave NATO and let the Europeans finally start paying the bulk of their own defense instead of the US taxpayer. I also think we should write our congressmen to insist they pass a law requiring the same VISA app for the EU to come to America.
Lol.
The more comments I read the sadder I become. They have no information outside their own little fantasy-filled bubble.
Try living amongst them. They are dumb farm animals with anger management issues and don’t give a flying fuck about anyone but themselves and “owning the libs”. I’m convinced they’re all sociopaths.
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