So a completely different compound in a completely different shape.
They got the same effect that got everyone excited (half levitation) with a similar material that is ferromagnetic.
Considering that there is a lot of unknowns and randomness regarding the synthesis of LK-99, and that the half levitation effect can be explained by ferromagnetism, to me, it sounds much more likely that the original LK-99 is a ferromagnet rather than a superconductor. Simply because ferromagnets are common, and a room temperature superconductor is an extraordinary claim.
I'd like to be wrong, but for now, it doesn't look good for superconductivity.
> Simply because ferromagnets are common
Sure, metal ones are, but Are ceramic ferromagnets (without iron) common? That lone electron in an orbital is pretty important.
No one reputable has actually demonstrated full levitation, including the original team.
> Sure, metal ones are, but Are ceramic ferromagnets (without iron) common? That lone electron in an orbital is pretty important.
They literally reproduced this behavior with a substance that looks identical to the original LK-99, so while it would be quite unusual, it is clearly possible. Apparently ferromagnetism without any ferromagnetic compounds has been witnessed before, e.g. in ZnO.
> No one reputable
I don't care about reputability of anyone unless they have a known past of fraud. Gatekeeping in science is lame unless someone makes a claim to break well understood theory or claims to do something technically difficult. RTSC is neither.
Do you think this video is faked?:
https://twitter.com/Andercot/status/1687740396691185664?s=20
Video behavior can happen also with a diamagnetic substance.
Okay, so? It's been experimentally verified and it's not some sort of novel behavior. It's even been predicted to occur in PbO before, just not observed until now.
> I don't care about reputability of anyone unless they have a known past of fraud. Gatekeeping in science is lame unless someone makes a claim to break well understood theory or claims to do something technically difficult. RTSC is neither.
RTSC is absolutely something we believe is likely to be difficult, but more importantly none of the replications by either verified labs or scientists willing to put their names on the line, who documented what they were doing, actually worked.
Meanwhile, we have videos like the one you linked, which are posted completely anonymously by someone affiliated with no institution who followed it up with two videos of spinning poop. Many people have demonstrated that it's quite easy to fake a video that looks like this using software like Aftereffects. For you to claim this video is equally trustworthy to replications by credible labs with reputations on the line is certainly a choice you can make! I will not be doing it with you, however.
That a definitely non-superconducting material can do something similar is bad news for LK99.
You will need a four-circle diffractometer to prove two samples are identical, that also only work on single crystal if anyone can make it.
"We do not know the composition or structure of #LK99 with any confidence."
https://twitter.com/Robert_Palgrave/status/16872357567027527...