- cross-posted to:
- physics@mander.xyz
- cross-posted to:
- physics@mander.xyz
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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.
There is a very efficient way to beam solar power from space. It is called light.
It’s not efficient, a huge amount of it gets diffused or absorbed
Wow, you’re right! We should just build a Dyson sphere around the sun. 100% efficiency achieved. What could possibly go wrong?
Did you understand the person you respond to as saying its inefficient because the sun shines in other directions than the array proposed?
I’m pretty sure the person talked specifically about the beam from the array to earth being inefficient.
Excluding all the ancillary services, including the lasers that maintained the plasma, which was the principle part of this latest test.
Factoring everything in, they’re at about 15% return.
This is still very good for this stage, but the publications are grossly misleading.
If anything has been consistent about fusion its always them desperately trying to spin babysteps and monumental leaps forward and trying to make themselves seem super clean and safe especially compared to fission.
If anything has been consistent about fusion its always them desperately trying to spin babysteps and monumental leaps forward
That’s usually the media outlets sensationalising the results to the point where the articles are grossly misleading.
trying to make themselves seem super clean and safe especially compared to fission.
That’s just a fact, no need to try. The Fusion process is inherently safe the radioactive byproducts are generally short lived and easier to handle.
Fusion is not inherently safe. It has significantly higher rate of neutron discharge for the enegy produced which can damage the reactor vessel and potential to cause nonfuel material to become radioactive.
Ontop of any power disruption of the system has the potential for radioactive plasma to escape with nothing even remotely equivalent of a SCRAM to bring it back under control.
The only reason fusion appears safe right now is because its all still developmental phase and any issues are being handwaved as prototyping issues and not treated like the actual potential catastrophes they are.
The total mass of reactants in the fusion chamber is below milligram, some of which is bound in stable isotopes. Even if all of it escaped, it would be far from catastrophic.
The reaction itself cannot run away on its own because it requires a delicate balance in temperature and density, which will be immediately disturbed if there was a breach in containment.The walls will be activated by neutrons, but short of blowing the reactor up, there’s not much chance of materials escaping in a significant amount to pose a danger.
