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submitted 6 months ago by m3t00@lemmy.world to c/science@lemmy.world

48 seconds. I predict a glut of helium. balloons for everyone

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[-] gregorum@lemm.ee 84 points 6 months ago* (last edited 6 months ago)

Is… is that good?

Edit: it is!

[-] ummthatguy@lemmy.world 49 points 6 months ago

From what absolutely little I know, yes. Sustaining the reaction at such high temps for long is, as of now, difficult.

[-] gregorum@lemm.ee 35 points 6 months ago

Yeah, I decided to actually bother and read the article. That’s why I made my edit. This sounds like a very important technical milestone for the development of fusion reactors. Hooray!

[-] Dudewitbow@lemmy.zip 6 points 6 months ago

when talking about fusion, just think the conditions of stars/the sun. In order to function correctly, it has to be ridiculously hot.

The race for fusion is how to maintain it, and eventually have a net positive transaction of energy out, to energy in ratio.

[-] SlopppyEngineer@lemmy.world 8 points 6 months ago

just think the conditions of stars/the sun

Hotter than the sun. The sun has an enormous gravity pushing things along. To compensate we use more heat.

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[-] malloc@lemmy.world 76 points 6 months ago* (last edited 6 months ago)

Hotter than the surface of the sun by a factor of ~18000.

Hotter than the suns core by a factor of ~7.

https://science.nasa.gov/solar-system/temperatures-across-our-solar-system/#hds-sidebar-nav-1

People talk about Icarus flying too close to the sun. Motherfuckers are recreating it in labs 😂

[-] AA5B@lemmy.world 13 points 6 months ago

Hotter than yo mama …. Wait a minute

[-] rigatti@lemmy.world 8 points 6 months ago

Just barely though...

[-] NeatNit@discuss.tchncs.de 12 points 6 months ago

If Icarus won't come to the sun, the sun will come to Icarus.

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[-] Plopp@lemmy.world 8 points 6 months ago

I just want to know what kind of thermometer they put into the plasma to measure the temperature. It must have been made of ice or something to not burn up.

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[-] CaptKoala@lemmy.ml 8 points 6 months ago

The power of the sun, in the palm of my hand.

[-] Harbinger01173430@lemmy.world 5 points 6 months ago

...Icarus was a primitive savage from ancient times...he didn't have our cool cyberpunk tech

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[-] Gigan@lemmy.world 62 points 6 months ago

I'd love to see an operating fusion reactor in my lifetime. Real sci-fi technology

[-] virku@lemmy.world 47 points 6 months ago

Currently reading news and communicating with people around the world from the privacy of my toilet using my hand terminal. It can also understand what I am saying and excecute my spoken commands (to some extent at least). That's some Sci fi shit right there. Pun intended

[-] agent_flounder@lemmy.world 6 points 6 months ago

It's seriously insane growing up on star trek and then seeing it come to life.

Still holding out for flying cars.

And warp drive!

[-] Soggy@lemmy.world 7 points 6 months ago

I don't want flying cars because I don't want 95% of the people around me to be driving regular cars. Can't even use a turn signal and now they have carte blanche to drive over houses and shit?

The answer is mass transit. Mag-rail, not personal aviation.

[-] dual_sport_dork@lemmy.world 7 points 6 months ago

Yeah, motherfuckers can't even drive in two dimensions. Adding a third would be a clusterfuck of galactic proportions.

[-] TurboDiesel@lemmy.world 6 points 6 months ago

I'm waiting for the post-scarcity stuff 😭

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[-] assembly@lemmy.world 39 points 6 months ago

48 seconds at those temperatures is no joke, that is pretty amazing. I didn’t see the article elaborate on what the current limiting factors are for pushing beyond 48 seconds. Like I wonder if it’s a hard wall, a new engineering challenge, a tweak needed, etc. this is the reactor that set the last record so they are doing something really right.

[-] ColeSloth@discuss.tchncs.de 11 points 6 months ago

Last one I read about is just constantly and very quickly (far quicker than human abilities) adjust the magnetic field around the plasma in order to keep it stable and in place. They've been (or at least one team was) using AI to go over data and control and predict the field adjustments, because only reacting after the plasma starts to move hasn't been quick enough.

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[-] remotelove@lemmy.ca 9 points 6 months ago

(The article touches on this bit a little) I was watching something about fusion the other day and it seems that it is super tricky to keep the magnetic field balanced in a way that keeps the plasma in a proper toroid. Not only does it need to keep the correct strength, it has to fight against random turbulence. This is critical to start the reaction, but also to maintain it.

Also, they gave some other physical limitations in the article as well:

To extend their plasma's burning time from the previous record-breaking run, the scientists tweaked aspects of their reactor's design, including replacing carbon with tungsten to improve the efficiency of the tokamak’s "divertors," which extract heat and ash from the reactor.

Basically, it's the container that has limitations as containing a pseudo-sun probably isn't easy.

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[-] whaleross@lemmy.world 22 points 6 months ago

Hot damn! Limitless fusion power is only thirty years away!

[-] hydroptic@sopuli.xyz 15 points 6 months ago

Like it has been for the past 30 years (which, I assume, was the joke here.)

If fusion research was funded adequately we'd probably have it by now, but I don't know if it's the energy lobby or what that means that it's chronically underfunded. An actually working fusion reactor design would bring about such an upheaval in the energy markets that I wouldn't be surprised if plutocrats had a hand in making sure the research receives orders of magnitude less money than it should.

[-] malloc@lemmy.world 7 points 6 months ago

Existing energy conglomerates (ie, oil and gas) probably send their army of lobbyists around the world to spread FUD about fusion. Thus minimal funding. 🪦

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[-] ours@lemmy.world 10 points 6 months ago

Breakthroughs will bring in investment and then things can accelerate if it ends up viable.

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[-] Neato@ttrpg.network 16 points 6 months ago

Unfortunately the amount of helium made in fusion is so small as to be useless for anything humans need. Fusion is just that efficient.

[-] dohpaz42@lemmy.world 6 points 6 months ago

So no chipmunk voices? 😢

[-] gregorum@lemm.ee 9 points 6 months ago

Only for chipmunks for now.

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[-] EmperorHenry@discuss.tchncs.de 15 points 6 months ago

I can't wait for the billionaires to increase our power bills for this.

Yes yes I know it would be cheaper, but billionaires are going to charge more money even though it's costing them less.

[-] CosmicCleric@lemmy.world 17 points 6 months ago* (last edited 6 months ago)

I can’t wait for the billionaires to increase our power bills for this.

Yes yes I know it would be cheaper, but billionaires are going to charge more money even though it’s costing them less.

You know, not everything has to be "eat the rich".

This could just be a really neat science article/discussion about a fusion test, and have no need to bring up Capitalism.

The constant complaining just gets old after a while. Be focused, if you want to be listen to, and taken seriously.

[-] blackn1ght@feddit.uk 7 points 6 months ago

Agreed. There's communities where these comments are fine but the science community should be pretty strict about what type of comments are allowed. Every comment section in any community just ends with the same comments.

[-] Buffaloaf@lemmy.world 6 points 6 months ago

Seriously, can't we just be happy about something for a few minutes?

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[-] Pistcow@lemm.ee 15 points 6 months ago

Almost as hot as the temperature my wife leaves the shower at.

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[-] TheHottub@lemmy.world 10 points 6 months ago

One day we will break that record and nobody will ever know again.

[-] Kolanaki@yiffit.net 10 points 6 months ago* (last edited 6 months ago)

100 million degrees C

Sounds hot.

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[-] Scrof@sopuli.xyz 7 points 6 months ago

Can't wait for fusion reactors to not be thing for another 50 years at the very least.

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[-] fidodo@lemmy.world 7 points 6 months ago

I'd like to know more. How do you actually harness the energy produced by temperatures that high? Is the end goal to figure out how to sustain the reaction at lower temperatures or do we actually have ways to generate electricity from those temperatures without losing most of it to waste?

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[-] JATtho@lemmy.world 6 points 6 months ago

Fusion triple product: the duration the thing works x inverse of how close you are to melting the reactor vessel x how large is the reactor vessel

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this post was submitted on 06 Apr 2024
364 points (98.1% liked)

science

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