• hihi24522@lemm.ee
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    11 hours ago

    Fuck the square cube law. If there is any magic that can freeze things / make things cold, the second law of thermodynamics is void, and by extension the other two are as well.

    Perpetual motion machines? Hell yeah. Infinite energy? Hell yeah. Being able to create negative energy by decreasing entropy thus being able to create antigravity and simulate negative mass? Hell yeah

    • _stranger_@lemmy.world
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      51 minutes ago

      If you get negative mass (we’ll, negative energy density) you get a working Alcubierre drive. Instant FTL.

    • Owl@mander.xyz
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      8 hours ago

      The magic probably takes the energy from somewhere else

      Mana/chi/whatever

      • hihi24522@lemm.ee
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        1 hour ago

        That still is a violation of entropy because you’ve increased the “order” of energy in the universe as a whole, which is not possible.

        If you can violate entropy, one can create a more than perfect Carnot Engine (or in general just a heat engine with efficiency greater than 1) which would allow you to generate an infinite amount of energy in the form of mechanical motion.

        Unless in creating/gaining “mana” one is accelerating the entropic decay of the universe as a whole equal to or greater than the amount of entropy reversed locally (eg spells must produce heat and be inefficient at converting mana energy into work), magic would violate thermodynamics and allow for infinite energy creation.

        • _stranger_@lemmy.world
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          40 minutes ago

          If I was shoe horning a magic system that co-exists with physics, I’d make magical black holes around the universe that are constantly sucking matter in and turning them into magic in some kind of sub space that eventually leaks back in as matter and regular energy. Close the system so to speak.

  • glitchdx@lemmy.world
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    11 hours ago

    pretty sure all the mecha shit in legend of khorra is because some engie got isekaid and nobody talked about it.

  • Revan343@lemmy.ca
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    13 hours ago

    Pffft. Magic does crazy things to the square-cube law, but it does crazy things to the rocket equation. ∆v? Yeah, I’ve got some in this spellbook

        • xia@lemmy.sdf.org
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          4 hours ago

          I’m sure it would be quite rare to fight in a clean-room where such a tactic would be necessary, but not to worry… even in conditions free from dirt and dust, you can still get several hits in by converting your ordinary EDC PocketSand™ into earth-shot.

          • wolframhydroxide@sh.itjust.works
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            2 hours ago

            If we’re talking fullmetal alchemist rules, it’s pretty clear that transmutation doesn’t change the atomic make-up of a thing. Just the chemical bonds and intermolecular forces, combined with moving the bits around following a formula. However, you could turn fat into a hydrogen-propelled diamond bullet.

  • slazer2au@lemmy.world
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    21 hours ago

    As long as you don’t have some deity like Knowledge restricting information from alternative realities.

    Stupid Knowledge, let Clive find out about gravity already.

  • almost1337@lemm.ee
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    19 hours ago

    Delvers LLC has some aspects of this, with one of the characters making guns that accelerate projectiles via magic.

    Also The Wraith’s Haunt series features a “system” that polices the use of magic/foreign technology and erases anyone who goes too far with either.

    • Scubus@sh.itjust.works
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      16 hours ago

      World’s finest assassin gets reincarnated as an aristocrat is really good about that first point as well.

      And creature girls: a hands on field study (or something like that) is really neat for that second point. It also discusses a lot of biology and politics, although the political discussion is dogshit. Its also super fucked up and basically porn.

      • wolframhydroxide@sh.itjust.works
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        2 hours ago

        Though that wouldn’t help for many biological organisms, such as arthropods, where it’s about Surface Area vs. Volume in diffusion. The oxygen diffusion rate gets too low without higher O2 concentrations

      • bizarroland@fedia.io
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        22 hours ago

        I’ve read one where the guy basically had Minecraft powers and so he built a wall and then destroyed the supporting blocks and the wall stayed floating in air.

        It had the potential to be pretty interesting, but it quickly turned into a monster girl harem manga.

        Not that there’s anything wrong with that in and of itself, but I gave up on it when the lead heroine used sleep magic so that the average japanese man MC could be raped by a bunch of harpies.

        There was also a disturbing amount of butt stuff forced on the MC. Kinda weird all in all.

        • Alexstarfire@lemmy.world
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          21 hours ago

          If I wasn’t so familiar with manga and anime this would sound disturbing. But this barely tickles the feeling.

        • Scubus@sh.itjust.works
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          16 hours ago

          You’re not talking about “survival in another world with my mistress” are you? He has minecraft powers and does fuck harpies, but i dont remember any rape or butt stuff. Although yeah, it was definitely a lot better before they started introducing a ton of new characters without filling them out.

          • bizarroland@fedia.io
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            2 hours ago

            The rape is off camera and downplayed immensely, but 8t does happen from an objective viewpoint

      • Eheran@lemmy.world
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        18 hours ago

        The whole issue with that is not only about weight, that hardly scratches the surface. Heat transfer, friction, radiation, mass transfer, etc. all get limited by this in some way and are FAR more consequential than weight alone.

    • Kowowow@lemmy.ca
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      22 hours ago

      I think essentially everything affected would weigh less so you could build bigger stuff using less power to move and less support to hold stuff in place though if you wanted to make mechs I wonder if impacts would still have the same affect as it everything weighed more

      • Eheran@lemmy.world
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        18 hours ago

        I understand now that TO exclusively was thinking about weight, while that is only one of many things that are limited by the surface to volume scaling.

  • Kowowow@lemmy.ca
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    22 hours ago

    Reminds me of the grimnior series where they have “heavies” that affect gravity and with the help of that same magic in the form of glyphs they make a giant mech suit called the nishimura super gakutensoku