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[-] Rubanski@lemm.ee 180 points 9 months ago

Fusion reactor SLAMS surprised scientists with it's INCREDIBLE output

[-] frunch@lemmy.world 53 points 9 months ago

You'll never believe what they do next!

[-] Ultragramps 25 points 9 months ago

What happens in the reaction at the 69th microsecond will shock you!

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[-] jaemo@sh.itjust.works 23 points 9 months ago

Scientists RIP stubborn atoms for bad faith energy negotiation policy.

[-] usualsuspect191@lemmy.ca 130 points 9 months ago

Firstly, the energy output falls far short of what would be needed for a commercial reactor, barely creating enough to heat a bath. Worse than that, the ratio is calculated using the lasers’ output, but to create that 2.1 megajoules of energy, the lasers draw 500 trillion watts, which is more power than the output of the entire US national grid. So these experiments break even in a very narrow sense of the term.

It's so refreshing to see an article at least mention the way these tests are measured are based on the energy just in the laser itself and not the total energy used.

[-] FBJimmy@lemmus.org 53 points 9 months ago

I agree it's good that the article is not hyping up the idea that the world will now definitely be saved by fusion and so we can all therefore go on consuming all the energy we want.

There are still some sloppy things about the article that disappoint me though...

  1. They seem to be implying that 500 TW is obviously much larger than 2.1 MJ... but without knowing how long the 500 TW is required for, this comparison is meaningless.

  2. They imply that using more power than available from the grid is infeasible, but it evidently isn't as they've done it multiple times - presumably by charging up local energy storage and releasing it quickly. Scaling this up is obviously a challenge though.

  3. The weird mix of metric prefixes (mega) and standard numbers (trillions) in a single sentence is a bit triggering - that might just be me though.

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[-] RubberElectrons@lemmy.world 36 points 9 months ago

Still, from an acorn grows a massive tree.

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[-] Harbinger01173430@lemmy.world 54 points 9 months ago

At some point we'll be able to say: ...and thus, humanity created its first star.

[-] AllonzeeLV@lemmy.world 38 points 9 months ago

...and accidentally incinerated its home world, as the supply dependant lunar colony could only look on in horror.

✨The End✨

[-] LarmyOfLone@lemm.ee 28 points 9 months ago

I know you're joking, but nuclear fusion is inherently safe because if it breaks there is no way to sustain a chain reaction. And is only creates mildly radioactive byproducts. So you could blow it up and it wouldn't seriously contaminate the area.

[-] echodot@feddit.uk 20 points 9 months ago

Not only are the radioactive byproducts not that dangerous (everything is relative of course). But also they have incredibly short half lives so they go away long before the firefighters turned up.

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[-] SparrowRanjitScaur@lemmy.world 19 points 9 months ago* (last edited 9 months ago)

Nah, the Earth doesn't have enough mass to become a star. If it did, it would already be one.

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[-] echodot@feddit.uk 28 points 9 months ago

When they do they should come up with some original quote.

"The power of the sun in the palm of my hand", something like that.

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[-] blazera@kbin.social 46 points 9 months ago

We already got plenty of nuclear fusion output with no energy input on our part. But folks dont want solar panels

[-] Zorque@kbin.social 61 points 9 months ago

What is with peoples insistence that we only ever use one kind of power generation?

Wind, solar, fusion, fission, hydro, they all have their uses. Why limit yourself like some kind of console fanboy?

[-] blazera@kbin.social 16 points 9 months ago

That's fair. Im big solar fanboy but if more people were fusion researchers the world wouldnt be a worse place.

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[-] Assman@sh.itjust.works 31 points 9 months ago

*minus the energy needed to make, maintain, and replace solar panels.

I support more solar installations, just calling out it isn't free power.

[-] rockSlayer@lemmy.world 21 points 9 months ago

As more solar is installed, the less power input we need to provide. There will be a point where all solar power required to make a solar panel will be produced by solar panels

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[-] afraid_of_zombies@lemmy.world 33 points 9 months ago

Maybe one day we will produce a civilization capable of using technology as it comes out instead of one that decided to call it quits decades ago. Oh sure we got cellphones but we are still burning coal. Because nuclear is scary.

[-] Theharpyeagle@lemmy.world 28 points 9 months ago* (last edited 9 months ago)

I think nuclear energy is a great idea in theory, but I have absolutely zero trust in companies handling nuclear waste responsibly. It's not like they have a great track record.

That being said, pretty excited about this if it's as safe as they say.

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[-] wabafee@lemmy.world 29 points 9 months ago* (last edited 9 months ago)

We'll probably be able to harvest solar power from space then beam it to Earth in a practical way first, than nuclear fusion becomes practical.

[-] tryptaminev@feddit.de 76 points 9 months ago

There is a very efficient way to beam solar power from space. It is called light.

[-] aidan@lemmy.world 30 points 9 months ago

It's not efficient, a huge amount of it gets diffused or absorbed

[-] Knock_Knock_Lemmy_In@lemmy.world 22 points 9 months ago

It doesn't need to be efficient. Capture all the light that hits earth for 5 minutes and that's the world energy demand for a year.

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[-] excitingburp@lemmy.world 16 points 9 months ago

The nice thing about space is that there isn't any weather up there to make the solar panels dirty etc. There's also a lot of space, which solar panels need a lot of.

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[-] buzz86us@lemmy.world 25 points 9 months ago

Awesome put a solar farm next to a nuclear fusion plant

[-] KairuByte@lemmy.dbzer0.com 20 points 9 months ago

I believe the general principal is giving such a device “seed energy” to get it started, then just feeding the power it produces back into itself. The only time you’d ever need that solar farm is to get it started.

You could also pump that energy into other fusion reactors to get “unlimited energy” so to speak.

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this post was submitted on 06 Feb 2024
653 points (100.0% liked)

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