Apart from levitation and resistance, free conductivity, what are superconductors really good for? Like how could an iPhone become better with super conductive room temperature materials?
A room-temperature superconductor? New developments
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Re: A room-temperature superconductor? New developments
#692Earlier quoted context omitted.
It's implied by instant charging. The power would be the battery capacity divided by 0.
No one means literally zero time to charge. A couple seconds compared to minutes or hours is virtually instant for practical purposes.
Let me keep being pedantic and notice that a typical phone capacity of 10000 Joules divided by 2 seconds is still 5 kW of power, so not a trivial amount. I'd think 30 seconds (333 Watts) is more realistic.
Re: A room-temperature superconductor? New developments
#693Earlier quoted context omitted.
I want to believe. After several millennia of killing people for gold, we can finally put all that gold to good use—using it to create superconductors that can power energy weapons we can use to kill each other. ♫ It's the circle of life ♫
> After several millennia of killing people for gold, we can finally put all that gold to good use Wouldn't that just make gold even more valuable (and thus more killing will ensue, even ignoring the high energy weapons).
♫ And it moves us all ♫
♫ Through despair and hope ♫
Re: A room-temperature superconductor? New developments
#694Earlier quoted context omitted.
I’m not an expert on this, but I think superconducting wires have an current limit, as a current flowing creates a magnetic field which the superconductor has to repel. I read that the paper states a very low current limit for LK-99, meaning it loses superconductivity once a very modest amount of current is passed through it.
It's hard to tell what the critical current density of LK-99 is, because their sample is porous and probably very impure. They measured the critical current they could pass through a sample, but the conducting cross-section is somewhat unknown. Its high critical temperature suggests that it should probably have a higher current capacity than other superconductors. That said, in the extremes, current density is also l…
Couldn’t you bind it in resin?
Re: A room-temperature superconductor? New developments
#695Earlier quoted context omitted.
> What are they doing?! Trying to make ad money with views, which is their profit incentive. Mouse models are nearly always spun as applicable to humans, which an average, aging, viewer would be interested, usually relating to "Cure ", "regrow limbs", "stop aging", etc. The average viewer isn't interested in superconductors, and the 10 seconds the news orgs have for each bit of news isn't enough to explain them.
The NYT has published 3 articles about room-temperature superconductors since March; all about the insanely high-pressure one that is INFINITELY less exciting than the new claim and turned out to be bunk anyways.
hmm, the high-pressure room-temperature superconductor turned out not to actually be real?
wp says
In 2020, a room-temperature superconductor (critical temperature 288 K) made from hydrogen, carbon and sulfur under pressures of around 270 gigapascals was described in a paper in Nature.[71][72] However in 2022 the article was retracted by the editors because the validity of background subtraction procedures had been called into question. All nine authors maintain that the raw data strongly support the main claims of the paper.[73]
Re: A room-temperature superconductor? New developments
#696Earlier quoted context omitted.
Best places to check if I’m casually interested?
I've been using this forum post: https://forums.spacebattles.com/threads/claims-of-room-tempe... But I'd also appreciate other links
I found another place that's maintaining replication results too: https://eirifu.wordpress.com/2023/07/30/lk-99-superconductor...
It's interesting they marked one of the claims as "likely fraudulent" but the guy at the spacebattles one hasn't. The video doesn't seem to be related at all to the 4 samples one, so I'm not sure why they think it's likely fraudulent.
Re: A room-temperature superconductor? New developments
#697Earlier quoted context omitted.
I have seen three now from China alone. Plus a calculation from some respected institute from today that confirms the theory
Why are they all from China? Why are they able to replicate so much faster than US labs?
Because China is a new global super power on many fronts including science, engineering and manufacturing ?
Re: A room-temperature superconductor? New developments
#698The ramifications of the inflection point we are currently at is mind boggling. I had a hard time explaining this last night but we may very well be witnessing the beginnings of a technological transformation era much like when the p-n junction was invented. From the 1940s standpoint it would be hard to envision all we had today. - Lossless transport of energy - Batteries that don't take any time to recharge - Faster…
None of the things you listed are limited by the conductors in them. The efficiency of high voltage AC power lines is limited by capacitive coupling to ground. Battery charging is limited by the cell chemistry. CPU heat output is limited by the resistance of the semiconductors. Turns out metals (in particular copper) are already incredibly good conductors.
> - Lossless transport of energy - Batteries that don't take any time to recharge - Faster CPUs. Much faster with no heat to burn your lap.
Finally someone is speaking English in these room-temperature superconductor threads that I can actually understand and get excited about!
> None of the things you listed are limited by the conductors in them.
Never mind. :(
Re: A room-temperature superconductor? New developments
#699I'm astounded that the MSM seems to be ignoring this ATM. I did a Google news search on LK-99 and saw nothing from major publications. A search on the NYTimes returned an article from 1974.
it's showing up on science news sites though, even major ones.
Re: A room-temperature superconductor? New developments
#700Earlier quoted context omitted.
Thats kinda hyperbolic. Its more like the transistor.
The transistor was unequivocally the biggest technological breakthrough since fire
breakthroughs since fire more important than the transistor probably include cooking, agriculture, the wheel, metallurgy, glass, ceramics, the heat engine, mechanisms in general (with things like pulleys, hydraulics, screws, and gears), construction cement (originally lime), math, writing, optics, electricity, chemistry (including things like distillation, the atomic theory, and recrystallization), plumbing, carpentry, weaving, sewing, automatic digital computation, and possibly language, depending on when that happened
it seems like maybe you haven't thought much about the history of technology