Live data from Hacker News

Successful room temperature ambient-pressure magnetic levitation of LK-99

arxiv.org

301–310 of 1001 posts

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#301
post #278

Earlier quoted context omitted.

Democracy is a diversion technique honestly. “Rulers” are always a few people/corps and the fate of the people depends on them.

Honestly there's a big difference in the way people live in North Korea and Switzerland.

One provides service to the outside world broadly in trade to fulfill its needs, the other provides limited service to the outside world and trades with a highly limited subset of the world to fulfill its needs

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#302

Earlier quoted context omitted.

0 write your proof then, rise to unending fame.

If contemporary scientists cared about proving negatives, let alone assigning prestige to the task, then there wouldn’t be a replication crisis.

...the replication crisis is not in science

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#303
post #278

Earlier quoted context omitted.

Democracy is a diversion technique honestly. “Rulers” are always a few people/corps and the fate of the people depends on them.

The key is being able to throw the bums out every 4-8 years. This gives Democracy a self-correcting feature that doesn't work with lifetime rulers.

It also doesn't work with corporate sponsorship of the elected.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#304

Earlier quoted context omitted.

I'm generally anti-patent, but if there were any valid case for patents, this is it. Long, hard labor to discover something entirely new that has massive uses for society. I'd rest my hopes on them not being dicks about it, not on them not getting benefit from it.

I honestly can't comprehend how anyone wound think having a monopoly on a material is valid. They will make money without being the cartel of the superconducting sector.

It wouldn't necessarily have to be a monopoly. There's such a thing as compulsory licensing and statutory licensing. That is, government(s) could decide that the patent is valid, but anybody can use it (without needing the patent holder's permission), as long as they pay the patent holder. And the government could decide to set the price.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#305

For those experiencing this type of "black swan, but good" event for the first time, it is helpful to recognize that the human tendency to believe that all future "big events" will be dystopian downers, is statistically unsound. For a while I've kept a list of the things that could be "good" swan events, but to be fair I didn't have "room temperature superconductor on that list" :-) Other things that could happen: 1)…

Would you mind sharing that list?

Also, pedantic point, you keep referring to good and bad black swan events. I thought the definition of black swan didn't make any assumption about whether the impact is positive or negative? Only that has a huge impact (I haven't read Taleb's book yet, correct me if I'm wrong)

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#306
post #276

Earlier quoted context omitted.

Auctions, sanitary towels, retirement, banking, disposable razor, sewing machine, canned food, interchangeable parts, antibiotics, solar cells, postage stamp, light bulb, pencil, air conditioning, insurance, dwarf wheat, spreadsheet, cold chain, double entry book-keeping, S-bend, infant formula, clocks, public key cryptography, passports, batteries, printing press, video games, GPS, contraceptive pill, shipping conta…

This reads like a list of technologies from the game civilization :)

I thought the same when I was listening to the podcast! Interchangeable parts especially! They’re so impactful, but they’re taken for granted outside of this podcast and Civ.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#307

Earlier quoted context omitted.

I have heard people much more knowledgeable than me say that measuring true zero resistance is actually quite difficult and takes some degree of specialized equipment, especially with such small samples. That may be part of it.

so none of the previous more esoteric superconductors were ever measure for zero resistance?

They were, but they had more time to resolve the difficulties

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#308

Earlier quoted context omitted.

It would have been more convincing if you had given real past examples rather than speculative future ones :) Although I'm pretty sure there are plenty that many people can think of, so it doesn't really detract much from your point.

Antibiotics Electricity Internal combustion engine Flight Li-Ion batteries Radio communication

And punctuation, too.

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#309

Earlier quoted context omitted.

A good one would be "productive AI." People forget, but a short while ago, AI was treated as something where being actually useful was perpetually 20 years away, and the real-world status of it was exemplified by a chatbot like Eliza.

When AI was 20 years away, people seemed more optimistic about it than now when its inevitable transformative societal impact is seemingly right around the corner, are you sure this is the kind of example they were going for?

Larry Page and Sergey Brin will be so upset when AIs unionize...

Re: Successful room temperature ambient-pressure magnetic levitation of LK-99

#310

All of the "it floats" videos are unattributed leaks or come from less-than-reputable sources. The reputable sources only ever show videos of the sample touching the magnet. From what I'm reading, several different types of materials can angle themselves like this from a magnet, but only Type II superconductors will float above a single monolithic magnet. Until we see a confirmed video from a reputable source of a vi…

The problem is that no one has a pure sample of LK-99, only chunks of rock containing small areas of LK-99. So even if LK-99 is a true RT superconductor, we're only going to see levitation on the side of the chunk that has a high enough concentration of it. It's like trying to evaluate a diamond by poking at a rock that might or might not have any diamonds buried inside. It must be really frustrating.

So yeah, I hope there's a better way to evaluate this substance than "it floats!"

Post reply on HN