• BennyInc@feddit.org
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    1 day ago

    That’s easy to explain, having cut a lot of cucumbers in my life. Since the actual nucleus of an atom is much smaller than the atom including its electrons itself, the probability of hitting the protons or neutrons is so small, that I’d need to live for a few thousand years and cut 1 cucumber per second nonstop, before this scenario happens even once. It is not impossible, just very improbable.

    • madcaesar@lemmy.world
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      1 day ago

      I know very little about physics and I’m pretty sure you could cut cucumbers with a knife until the end of time and you’ll never trigger a nuclear explosion.

    • NaevaTheRat@vegantheoryclub.org
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      1 day ago

      Actually, it’s because cucumbers are so cool (c.f. cool as a cucumber) that they’re in a ground state. It’s actually endothermic to split their atoms so you don’t get a chain reaction.

      Cutting hot vegetables, habernaros for example, is much more risky and adequate precautions should always be taken to avoid radioactivity contaminating sensitive regions of the body.

    • webpack@ani.social
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      1 day ago

      (assuming your post isn’t a joke) it is impossible to cause a nuclear reaction by cutting cucumbers.

      the biggest innacuracy in this comic is that as the panel zooms in on the cucumber atoms, the knife looks exactly the same. if it was realistic it would just be a bunch of metal atoms pushing aside a bunch of cucumber atoms, not a sharp knife slicing through individual atoms.

      • beetsnuami@slrpnk.net
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        1 day ago

        Well… that, and one nucleus splitting in half wouldn‘t start a chain reaction in a cucumber, and therefore not release a macroscopically noticeable amount of energy.

        • maniii@lemmy.world
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          16 hours ago

          Won’t this cause nicks and dulling as sudden heating and impact lead to both knives becoming extremely useless ?

          Also replacing one of the knives with a sharpening rod, I can sort of suspend disbelief enough to believe it “possible”.

      • averyminya@beehaw.org
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        20 hours ago

        The Subtle Knife is definitely so sharp that it cuts through dimensions, so I think it would cut atoms.

        So really that just means it’s not inaccurate, it’s just a very specific, fictional knife!

    • Rooskie91@discuss.online
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      1 day ago

      Fission doesn’t happen because we cut atoms in half. Fission happens because we blast enriched uranium with neutrons, the uranium absorbs a neutron, gets too heavy, and falls apart.

      I mean think about it. Atoms are surrounded by a negatively charged electron cloud. Pushing 2 atoms together would be (sorta) like trying to push the like poles of two magnets together.

      • Justin@lemmy.jlh.name
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        1 day ago

        Sure, but you can also rip off electrons from atoms by rubbing them or bending a piece of wire. The energy needed to trigger fission in uranium is less than a picojoule, it just needs to be focused enough to knock away the part of the atom, which is why neutrons are the most common way.

        Here is a chart with the rate of fusion for two hydrogen atoms at various temperatures.

        https://en.m.wikipedia.org/wiki/Nuclear_fusion#/media/File%3AFusion_rxnrate.svg

        This chart bottoms out at a few million degrees, since the probability is extremely low.

    • Hirom@beehaw.org
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      1 day ago

      The electromagnetic force from the atoms’ respective electron cloud probably help prevent atom from getting close to each other. And the strong nuclear force also help prevent atom from splitting.