Read the graph, there is a sharp drop in resistance from 220K-250K. Its still not superconducting but it could be hinting something?
LK-99: Team of Southeast University observed zero resistance below 110 K
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Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#22Earlier quoted context omitted.
The first comment tells (from the professor talking in that video): > In order not to misunderstand everyone, let me say that it is below 110K, and 0 resistance is observed at normal pressure. Google translation, but I think it's clear that it's below and not above. At least normal pressure ... that's disappointing but still an improvement
I still don't understand what this is saying. There was 0 resistance below 110 Kelvin (-165celcius)? But not at room temperature?
In their sample they measured no resistance below 110 Kelvin. After 110 Kelvin resistance increased, although there was a weird dip in resistance around 225-250K that they can't explain (maybe instrument error.)
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#23Earlier quoted context omitted.
The first comment tells (from the professor talking in that video): > In order not to misunderstand everyone, let me say that it is below 110K, and 0 resistance is observed at normal pressure. Google translation, but I think it's clear that it's below and not above. At least normal pressure ... that's disappointing but still an improvement
I still don't understand what this is saying. There was 0 resistance below 110 Kelvin (-165celcius)? But not at room temperature?
Yes.
At 110 the resistance is 0.0001 ohms. At the highest point on the chart, 200k (Still 100 below 0 F) the resistance is up to 0.1 ohm.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#24Earlier quoted context omitted.
In the Resistance-Temperature graph ( https://twitter.com/Lipez400/status/1686793608626663441/phot... ) the resistance starts increasing from 110K
What’s the explanation for the sudden drop between 230K and 250K? It’s not dropping to zero but something is happening there.
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Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#25Why would other teams be observing floating at room temp? Is it possible to have a diamagnet that becomes a superconductor?
It’s possible there are tiny bits of superconducting stuff at room temperature which connect into bigger and bigger bits as temperature drops, until it starts working as a whole at 110K. Maybe. Don’t quote me.
That would suggest that a very high quality sample would superconduct at room temperature.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#26Certainly no expert here but if you take the original video and replications at face value it does exhibit strong diamagnetism at room temperature. Superconductors are diamagnetic due to the Meissner effect at their superconducting temperature. This would mean LK99 is a superconductor at low temperature and separately be strongly diamagnetic at room temperature (no Meissner effect if it's not super conducting). Would…
It's all unusual because it is uncharted territory. My guess would be assuming that it all pans out that this is due to various impurities and that it will take a while before we have a sample that is pure enough that all of these properties can be nailed down for good.
What's strange is that drop at higher temps, that's either a measurement anomaly or something really odd.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#27Earlier quoted context omitted.
In the Resistance-Temperature graph ( https://twitter.com/Lipez400/status/1686793608626663441/phot... ) the resistance starts increasing from 110K
What’s the explanation for the sudden drop between 230K and 250K? It’s not dropping to zero but something is happening there.
Yes, very odd. This may be why the original team believes they have a superconductor on their hands, but it doesn't quite get there and yet it does show the Meissner effect so something doesn't quite add up yet.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#28credibility of LK99 claims is very very high. What are the medium term practical implications for all these potential applications?
It seems more and more like it's credible, but that synthesis is going to prove to be the issue. All these repro attempts are having too much success for there to be nothing behind the team's claims.
Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#29Re: LK-99: Team of Southeast University observed zero resistance below 110 K
#30credibility of LK99 claims is very very high. What are the medium term practical implications for all these potential applications?
Start shorting power companies.