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Flux Pinning in sample of LK-99?
201–210 of 225 posts
Re: Flux Pinning in sample of LK-99?
#2021. This video is originally from an anonymous Douyin account. There is no verification that it is associated with a real replication attempt, from traditional academia or citizen science. There is a previous video on the channel showing the partial levitation more common to LK-99, but it likewise has no particular evidence it's not just a flake of pyrolitic graphite. It is claimed to be associated with a specific per…
All great reasoning. Unfortunately I believe it's a fake from an Occam's razor standpoint: it's too short and precisely framed.
It's trivial to record a video 20x longer with a moving POV without revealing IP or secrets, but far from easy to product 20x more doctored vfx.
Re: Flux Pinning in sample of LK-99?
#203Earlier quoted context omitted.
Handling lead tends to result on lead being on your hands, which has a nasty tendency to result in lead being on your lunch if you are not careful.
Basic safety precautions are fine. To put it in perspective: millions of people in the US regularly handle ammunition and shoot firearms at indoor ranges. Those contain lead in many forms: the projectile itself, lead fulminate in the primer compounds, lead suspended in the air after firing, etc. You make sure to have adequate ventilation, don’t touch your face, and wash your hands when you’re done. It’s important, ye…
Given that the effects of lead tend to be a subtle change in mental state, and show up months or years later, we really don’t know that it’s fine.
Re: Flux Pinning in sample of LK-99?
#204[flagged]
Re: Flux Pinning in sample of LK-99?
#2051. This video is originally from an anonymous Douyin account. There is no verification that it is associated with a real replication attempt, from traditional academia or citizen science. There is a previous video on the channel showing the partial levitation more common to LK-99, but it likewise has no particular evidence it's not just a flake of pyrolitic graphite. It is claimed to be associated with a specific per…
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Re: Flux Pinning in sample of LK-99?
#206This is basically proof of room temperature superconductivity correct? (Of course assuming it isn't a hoax)
I mean based on current understanding a previous video that showed levitation independent of the orientation was already sufficient to show it's not diamagnetic but superconducting. Assuming this is not a hoax actually the very first video together with the paper already shows everything. (Levitation, mentioning of zero resistivity regions)
Although generally the accepted method is that other labs reproduce it and that the paper passes peer review. Some videos aren't enough.
Re: Flux Pinning in sample of LK-99?
#207An oddball question for the device physicists here: Assume for now (subject to verification, of course!) that this material is a non-Cooper-pair superconductor. Could one still build Josephson junctions -- and SQUIDs -- from this material? If the answer is "yes", it's going to make a whole lot of magnetotelluric geophysicists very, VERY happy.
Can you explain what uses room temp squids and JJ’s would have for magnetotelluric geophysics?
Re: Flux Pinning in sample of LK-99?
#208An oddball question for the device physicists here: Assume for now (subject to verification, of course!) that this material is a non-Cooper-pair superconductor. Could one still build Josephson junctions -- and SQUIDs -- from this material? If the answer is "yes", it's going to make a whole lot of magnetotelluric geophysicists very, VERY happy.
Can you explain what uses room temp squids and JJ’s would have for magnetotelluric geophysics?
Better cheaper faster ultrahigh magnetic sensing of magnetic flux and field across a broad dynamic range.
Typical setups are networked fields of multiple axis sub nanotesla magnetic sensors with processing to reduce noise and subtract interference in order to extract a differential change across time and space to convert to a deep earth image.
You know, the usual stuff.
The essential principal is a fixed sensor (network) that records the diurnal (daily) magnetic flux and specifically locals for local 'drag' caused by local features (deep metal deposits, more generally volumes with varying magnetic properties).
Re: Flux Pinning in sample of LK-99?
#209Elsa zhou says the wust student denied he posted it so authenticity cannot be confirmed. Assume fake video 4 now
Re: Flux Pinning in sample of LK-99?
#210Earlier quoted context omitted.
Seriously? To me this looks like a chip of graphite glued to an invisible thread. The way the object moves is not what I would expect from magnetism (see second 10 for instance)
This is what a pinned superconductor looks like. Here is a video I made of some YCBO over a small magnet: https://nt4tn.net/random/superconductor.mp4 you can see it settle back back when I move it with tongs (until i push hard enough to get it to snap into a new orientation). If I had a magnet that was much bigger than the superconductor it would look even more similar (less 'pivoty').
If only all videos of LK-99 (and UFO sightings for that matter) came in such high, crisp resolution. Thanks.