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A room-temperature superconductor? New developments

science.org

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Re: A room-temperature superconductor? New developments

#61

Post by FrustratedMonky »

cududa wrote: post #14
FrustratedMonky wrote: post #3

Forget posting with a year, or month, or day. These stories need a time-stamp. Who replicated or not since this morning.

The time stamps are below the post’s title

You know how sometimes people complain about an old story, and say put year in the title, like this.

(2014) Some Title

What is below the title is a time since posted, not the date of the article.

This was a joke. Since there are multiple submittals every hour today about this story.

So need something like

(8/1/2023 10AM) Yet Another Story, about another group, with claim about Replication of Superconductor

Re: A room-temperature superconductor? New developments

#62

Post by highwaylights »

anyoneamous wrote: post #30

Mostly, I am just glad that all the LK-99 posts are drowning out the "AI" news for a few days.

Don’t be. Twitter/X/whatever they’re calling it this week is crawling with Pepe investment bros talking about bullish sentiment because superconductors equals singularity musk crypto AI blah blah blah.

It’s bad. It’s really, really bad.

Re: A room-temperature superconductor? New developments

#64

Post by bhouston »

mmh0000 wrote: post #41
anyoneamous wrote: post #30

Mostly, I am just glad that all the LK-99 posts are drowning out the "AI" news for a few days.

But fear the news if it is discovered that LK-99 increases AI performance.

I'm sure Elon also has SpaceX or something trying to replicate it as well. He sort of has to jump on each new trend anyhow.

In a serious note, superconductors are likely useful in electric magnetic motors and probably in high power electronics and batteries in general, no?

Re: A room-temperature superconductor? New developments

#65

Post by declan_roberts »

martinald wrote: post #54
digdugdirk wrote: post #25

Earlier quoted context omitted.

It's a conductor of electricity. But super good at it. i.e. - It has zero resistance to electricity. Currently, the best superconducting materials we can create have to be chilled to near absolute zero, which means designing them to work in liquid helium baths. This is expensive, and difficult. If a material can superconduct at room temperature, now we're talking usage in general purpose consumer goods. As for why we…

Hmm. Losses from HVDC transmission are on the order of 3% per 1000km, so I'm not sure how much of a big deal it'd be for that kind of use case. Your example would only save ~6% transmission losses. An improvement yes but not really a big deal, unless the cables were far cheaper to make than current HVDC cables (which I'm doubtful about). I think there are other use cases within devices themselves that are far more in…

3% but keep in mind they can only push so much current through those wires before they start losing energy to heat, regardless of the voltage.

The same cable diameter can now power an entire state.

Re: A room-temperature superconductor? New developments

#67

Post by CoolGuySteve »

highwaylights wrote: post #62
anyoneamous wrote: post #30

Mostly, I am just glad that all the LK-99 posts are drowning out the "AI" news for a few days.

Don’t be. Twitter/X/whatever they’re calling it this week is crawling with Pepe investment bros talking about bullish sentiment because superconductors equals singularity musk crypto AI blah blah blah. It’s bad. It’s really, really bad.

Yeah, hnews is the place to be, nobody here is ever excited about anything new.

Re: A room-temperature superconductor? New developments

#68

Post by declan_roberts »

TheJoeMan wrote: post #23
Ajay-p wrote: post #19

I still have a very, very hard time understanding what all of this means. Is there an easy to understand explanation for a room temperature superconductor?

Ever seen one of these high school science demos?: https://www.youtube.com/watch?v=AWojYBhvfjM Now imagine one where you don't have to chill it with liquid nitrogen.

The Meissner effect has a lot of potential even outside of the energy efficiency changes (which is by far the most important).

It will be fun to see trains levitating over the ground without any friction loss from the wheels at high speed.

Re: A room-temperature superconductor? New developments

#70

Post by cmrdporcupine »

bhouston wrote: post #64
mmh0000 wrote: post #41

Earlier quoted context omitted.

But fear the news if it is discovered that LK-99 increases AI performance.

I'm sure Elon also has SpaceX or something trying to replicate it as well. He sort of has to jump on each new trend anyhow. In a serious note, superconductors are likely useful in electric magnetic motors and probably in high power electronics and batteries in general, no?

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