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On /r/lk99, one comment strikes ([1]):

>This is a cheap trick - the coil wrapping around the sample literally creates an electromagnet.

> The reason it's not unstable are because the two ends of the wire are holding the sample at each edge and coiled around the middle point of the sample, they are both tapering outwards like a V imagining that the point of the V is the sample.

> The two wires are acting as a single hinge, thus it is held in place when it repelled from the fat stack of magnets underneath.

> The reason it doesn't work with copper is that copper probably has less or similar resistance than the wire and thus short circuits the coil - electricity prefers the shortest path. The sample probably has high resistance (lol) thus the coil's current & resultant magnetic field is intact.

1. https://www.reddit.com/r/LK99/comments/1cbujyg/sctl_corp_com...

It doesn't seem to form a coil though. Positive and negative wires are separately wrapped around the sample. Current should flow straight along the surface of the sample. Or am I wrong?

Well, I have to slightly correct myself here. Even if it's not a coil, it will produce Lorenz force. Any current carrying wire (or any conductor really) will experience a force in a magnetic field. Coil is just a special case of this where, by coiling the wire, the effect is multiplied by the number of loops. See https://en.wikipedia.org/wiki/Lorentz_force#Force_on_a_curre...

The official apology for the video ([1]). TL,DR: it's Lorenz force.

Automatic translation to English:

> First of all, I would like to apologize to everyone.

> We would like to express our sincere apologies for causing controversy by uploading a video yesterday about the phenomenon of levitation by applying electric current to a sample.

> Yesterday's mocking criticism seemed to have an emotional side, and the opinions of those who gave sincere advice were ignored.

> I tried to find and read Lorenz's book that Dr. Inki Kim posted, but I couldn't find it easily. So, I spent the whole day looking for and studying related papers and videos. I would like to thank Dr. Inki Kim for his advice.

> Let me explain now. > From mocking criticism to sincere advice, people raised doubts about the Lorentz force. First, I don't know what happened to the copper plate not reacting yesterday, but it seems to have been stuck due to a magnet and magnetic force.

> It was a mistake to skip it without repeating the check, and I conducted all of yesterday's experiments alone. This happened because we shared the phenomenon with the team and interpreted it based solely on the information. Professor Kim Hyun-tak said at dawn that this can be explained by Lorentz force.

> Late tonight, we performed the same experiment on a newly manufactured sample and found out exactly what caused the illusion.

> The Lorentz force acts in the opposite direction when the current direction or polarity changes. In other words, yesterday's video showed that the Lorentz force acted in the opposite direction of the wire, and the sample did not fly out due to the tension of the wire, but floated in the air. I will not mention the fact that it did not work in the opposite direction when I experimented with the opposite polarity yesterday because it was a one-off phenomenon and could not be reproduced. This phenomenon is probably caused by one side sticking to the insulating tape due to heat generation.

> Starting this evening, I repeated experiments on all phenomena, and after realizing that there was an error in the experiment and being mistaken, I am immediately posting an apology.

> I would like to thank everyone who refuted, worried, and supported me, and I would like to apologize once again.

> I checked only 2 of the 3 newly produced samples today, and the zero resistance is clearly shown, and the indirect data is also shown repeatedly.

> In the future, we will check experimental results or data more thoroughly and repeatedly before disclosing them to avoid any misunderstandings.

> If there is anyone who feels that it is important to look at phenomena other than the whole body, we will proceed.

> I have never cheated, manipulated, or lied. > I will gladly accept criticism.

> One thing I would like to ask you is that if you speak in a gentlemanly manner about areas where you have doubts or doubts, we will also check more thoroughly without empathizing with you.

> I apologize and thank you again.

1. https://gall.dcinside.com/sigularity_point/92116

I think I'll wait for the cover of nature article before getting excited about superconductors again.

(Yes it could still be a scam even if it gets into nature but that seems like the minimum to me)

Isn't the rigidity of the wires enough to keep the sample stable? This doesn't seem to be real magnetic locking.

Why are they passing current through it? Why is it smoking?

Fool me once shame on me. Fool me twice...

Note: This is another name for LK-99. I'd love to believe but I thought this already got debunked.

From TFA: They have modified the chemistry to PCPOSOS which is LK99 with more sulfur and copper.

The article lays out that there are claims in both directions.

Has anyone studied the LK-99 mania as a sociological phenomenon? Its effects on HN specifically, even. Did anyone boosters end up eating crow?