• AbsolutelyNotABot@lemmy.world
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    1 year ago

    Nuclear fission is actually by definition the least renewable energy source

    But if you go according the strict physical principle every energy source is non-renewable

    The sun fuses a finire amount of hydrogen, earth has a finire amount of latent heat, the moon a finire amount of gravitational inertia etc.

    And there’s a little paradox if you think about it, how can fusion be non-renewable but solar, that use radiation from the sun fusion, be renewable?

    • evranch@lemmy.ca
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      1 year ago

      A bit of a stretch maybe, but I’m considering us to be discussing whether an energy source is renewable on Earth. The Sun is not renewable, but by the time that it’s no longer viable the Earth will be long gone as well! So as long as the Earth exists, I would say that solar PV and other solar driven processes like wind and hydro are renewable.

      By these standards yes, deep geothermal and tidal are “not renewable” either.

      • AbsolutelyNotABot@lemmy.world
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        1 year ago

        but by the time that it’s no longer viable the Earth will be long gone as well

        But that’s exactly the “problem”, there’s enough fertile material for potential millions of years of consumption, and that’s for fission alone.

        I think the debacle is more because the definition of “renewable” is a little arbitrary than the dilemma if nuclear is renewable or not

        • evranch@lemmy.ca
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          1 year ago

          I think we both agree on fertile material as discussed in another comment, the longevity issue is mostly with conventional LWRs burning up our fuel rapidly.

          I’m just being pedantic about the sun, lol