Earlier quoted context omitted.
Imagine if human progress had taken a wrong turn in 2020 all becomes of a typo
... all because of ... ?
That’s. The. Joke.
Successful room temperature ambient-pressure magnetic levitation of LK-99
661–670 of 1001 posts
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#662Earlier quoted context omitted.
If my understanding is correct, 2 is nearly solved if we have a room temp ambient superconductor
Please connect the dots for me. What does a room temp & atmosphere superconductor do for space travel? I am unaware of any obvious impact.
I was referring to fusion
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#663Not to be anti Eastern or anything but are there any results from the global west being worked on? Say a university in the US or UK /Europe? I have no reason to doubt the quality or integrity of research published elsewhere but I would love to see some research from multiple sources including a diverse geography.
You will find them on Twitter discussing politics.
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#664I love how the nytimes front page is just all Trump and political crap. Literally not a word about this, and if it's real, its like the biggest thing ever.
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#665Earlier quoted context omitted.
This is drawing completely wrong conclusions from erroneous oversimplifications: We're using high transmission voltages to keep current down. Superconductors would not change this AT ALL; superconductivity generally breaks down not only with temperature increases but also magnetic field strength (i.e. current). Switching large currents is also a hassle; especially with non-resistive loads. And completely changing hou…
A superconductor running at high amperage requiring more superconductor is still a superconductor. The losses you take are zero . Any amount of cross-section of copper though is not - you take losses at (I^2)*R. You lose power as a square of the current. There is an enormous difference between using superconductors at high currents and using any normal material. Obviously the impact of this depends on what the critic…
> The losses you take are zero.
Sure, but transission losses are generally a low single digit percentage-- eliminating those will not have much impact, but on the other hand your superconductor is EXTREMELY unlikely to be even close to cost competitive with aluminum/steel core wire.
Even if you could achieve critical currents comparable to conventional high-temperature superconductors at ambient temperature (which appears *highly* doubtful!), keeping high power transmissions lines at human-survivable voltages would be a tremendous waste of super-conducting material.
And even inside homes it seems quite farfetched to me to scale down voltages-- nobody wants to use plugs and switches rated for 200 amps just for their cheap toaster...
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#666I love how the nytimes front page is just all Trump and political crap. Literally not a word about this, and if it's real, its like the biggest thing ever.
NYT actually is the only newspaper outside of Korea to get into contact with the authors, and received an exclusive video from the professor.
Go to their science section.
Now it isn't top news, but when it is confirmed, it'll be front page news on every western newspaper.
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#667Korean scientists embody key cultural values: (Jeong) fosters deep bonds and commitment to their work; (In-gan-mi) encourages inherent honesty and sincerity; (Che-Myun) upholds honor, discouraging dishonesty; and Confucianism instills respect, loyalty, and duty. These values shape their dedication to research integrity and professional conduct. I choose to believe!
Yeah, nah https://en.wikipedia.org/wiki/Hwang_affair National pride and science are not a very good mix
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#668Earlier quoted context omitted.
> Commercially viable fusion energy. Will change a lot of things Considering that we already have a fusion reactor in the skies, I think that the room temp room pressure superconductor is the next best thing. Fusion is good but at this stage, the natural one will just do. Think global network of solar cells interconnected with LK-99.
Yeah. Perhaps add in some cheap battery technology to the mix of solar power and superconductor, and energy production could become co2 neutral. The creation of a global electricity network perhaps also has some effect on global cooperation. Now we just need reduce the use of fossil fuels (cars, aviation, heating, industry).
Well we'd need cheaper panels for that. Currently they last like what, 30 years and take 3 years to pay off the energy it took to make them? That gives them a roughly a 9x return on investment. You need at least 30-40x to maintain our civilization as-is. Crude oil provides about 100x return. Luckily offshore wind is almost over 30x.
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#669Earlier quoted context omitted.
With the current fabrication process, they're only getting a chunk with LK-99 particles sprinkled in. Since nobody yet knows how to fabricate a pure chunk of LK-99, it'll be hard to measure the true resistance of LK-99.
>Most likely, the material LK99 as reported in [1-3] is a heterophase structure, with co-existent non-superconducting constituents. This may yield superconducting droplets surrounded by nonsuperconducting material... https://arxiv.org/abs/2308.01723 >In fact, I find that Cu on this Pb(2) is 1.08 eV more energetically favorable than Cu on the Pb(1) site, suggesting possible difficulties in robustly obtaining Cu substi…
The good news is that we should know within a few weeks if rock surgery is effective. If that works they can increase the purity and sample size without needing to find a new creation process
Re: Successful room temperature ambient-pressure magnetic levitation of LK-99
#670Earlier quoted context omitted.
Can one know how many people are in that market? When prediction markets where mentioned early during the LK-99 story, I looked a bit around out of interest, which platforms exist, which topics they cover, how many people participate in that markets. Where I could find the number of predictors, it seemed pretty underwhelming - one, ten, fifty, a hundred, I think the highest I ever saw was a bit over a thousand, but e…
That seems to be made up as you would have discovered that there is no major money prediction market besides Polymarket, which was linked above.
What seems to be made up?