Recent comments in /f/dataisbeautiful

magnesiumb t1_j084tml wrote

Of all your graphics, not sure what the point of this one is. πŸ˜‚ The others have a more of a narrative component to them (crime reduction, for instance). Is there something noteworthy about producing cherries? Chile is the top copper producer in the world.

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Brittainicus t1_j083sof wrote

/s? We hit 150% return for fairly instantaneous reactions now. We generally are expecting to do fusion sort of like a combustion engine with many short burst of on and off. If we can get a few seconds of sustainable reactions we looking at many orders of magnitude returns.

We broke even last year, it was pretty big news and all this fusion post is in response from latest break through.

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jrkib8 t1_j082mxt wrote

I fully support continual use and future investment increases into new fission reactors. But having an "if it ain't broke don't fix it" attitude is laughable when you have Chernobyl, Fukushima, and 3 Mile Island staring you in the face. And don't pretend it's just digging a hole for disposal. Simply transporting spent fuel is an immense cost

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SenecatheEldest t1_j082g1g wrote

This chart is incredibly flawed. As someone mentioned, security arrangements vary in scope or scale - the Rio Treaty is defunct, and countries can be allies irrespective of formal security arrangements. For example, it strains belief to imagine that the US would treat an invasion of Austria or Ireland the same way it would treat one in the DRC or Sudan. Pakistan may b a 'Major Non-NATO Ally', but it's closer to China these days than the US.

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jrkib8 t1_j081y4y wrote

That 300 MJ was to start the reaction, you don't need to continually pump in 300 MJ. Scaling this up by like 1000x and you surpass that one time input. And the scale would likely need to be far higher for commercialization.

Nobody is saying we're there yet, but to deny how remarkable this breakthrough is, is pretty short sighted. It doesn't mean we decommission any existing fission reactors or even stop planning their construction. It does mean that if $38 billion can produce a net positive (and yes this proved net positive by all practical definitions) reaction, any government subsidies or research into hydrocarbon derived fuel needs to be phased out. That's $20 billion annually for oil alone in the US. God knows how much towards corn for ethanol. This announcement justifies a substantial amount of that phased out and put towards fusion.

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LeviathanPC t1_j080plz wrote

Ya OP didn't word that well. IIRC the laser put around 2MJ on target and the resulting fusion yield about 3MJ, so if NIFs laser was more efficient than what OP said would be accurate. But in actuality it took the NIF laser something like 200-300MJ for that shot. But when you consider that NIF is getting relatively old and that it's a research center so efficency wasn't at the forefront of design it's not unreasonable to see where this could hopefully lead.

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turtle4499 t1_j07zc95 wrote

No one has ever achieved a fusion reaction (in a reactor not a bomb) that produced net positive energy. I dont understand why we are investing in this when we can do fission right now. Most nuclear waste can be used by different reactor types to recycle it. The very small amount left over that can be stored by digging a fucking hole.

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