• cynar@lemmy.world
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      3 days ago

      The amusing thing is that the sun is actually quite a shit fusion reactor. It’s power per unit volume is tiny. It just makes it up in sheer volume. A solar level fusion reactor would be almost completely useless to us. Instead we need to go far beyond the sun’s output to just be viable.

      It’s like describing one of the mega mining dumper trucks as an “artificial mule”.

      • notsoshaihulud@lemmy.world
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        3 days ago

        I think this energy density math really depends on whether only the core or the whole surface area is taken into consideration.

      • lurklurk@lemmy.world
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        2 days ago

        Arguably, the nearby sun scale fusion reactor has been fairly useful for us. Nowadays we can convert its output directly into electricity using solar cells

        • cynar@lemmy.world
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          2 days ago

          I never said it wasn’t useful, just a very low efficiency reactor. Then again, if it was better, it would burn out faster, which would be bad for life on earth.

    • yogurt@lemm.ee
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      3 days ago

      They say “artificial sun” because that’s what it is though, there’s no fusion reactions here they’re just microwaving hydrogen to millions of degrees to study the kind of thing that would happen IF somebody runs a fusion reactor for 22 minutes.