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A collection of some classic Lemmy memes for your enjoyment
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
If you get negative mass (we'll, negative energy density) you get a working Alcubierre drive. Instant FTL.
The magic probably takes the energy from somewhere else
Mana/chi/whatever
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.
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.
I have had the same thought before. Unfortunately conservation of energy is not enough to ensure entropy is monotonically increasing.
Say you created a tiny universe with the same average entropy of our universe and then you connected it to the edge of our universe. Energy is not conserved because you just added some, but entropy is because you didn’t create an entropy potential.
Say you had a warmer object and a colder object and you took all the heat energy from the cold object and added it to the warm object. The energy of your system was conserved, but its entropy decreased, violating the second law.
You can use violations of the second law to violate the other laws because entropy naturally wants to increase due to probability (which cannot be violated without destroying math and logic etc.).
In the scenario above, if you put some fluid between the two objects you could harness convection via a turbine to harvest energy. Even though your action of moving energy around didn’t create or destroy energy, it created a sort of entropic potential energy. Kind of like how teleporting an object to a higher elevation doesn’t really increase any energy in the universe since all mass and kinetic energy were conserved, but you’ve now increased the potential energy of the object which would become kinetic energy as the object falls back down. You could then harvest infinite energy if you repeated the cycle.
In order for one to move energy around via magic without violating entropy, one has to increase the entropy of the universe by at least the same amount it would take to move that energy without magic.
The solution I thought of was just that magic accelerates the expansion of the universe. Technically this still allows for some “impossible” stuff locally, like a perpetual motion machine or free energy generator that will eventually die but on the timescale of human lives seem infinite.
Magic would get weaker with use over time as the universe nears it’s equilibrium temperature, and you would be shortening the lifespan of the universe every time magic is used. But even if you used it excessively, you probably wouldn’t be shortening the lifespan of the universe by very much unless you were using magic to like move black holes around or rearrange galactic clusters.
Is there an excel sheet of everything possible like that?
So if you can enchant a mana stone to hold a spell to maintain the cold then another stone to gather ambient mana to keep it going you can have infinate spell generation and then you've got your foundation all set.
I am not learning a new gradient and curl
Edit: divergence. It's been a while
You don't need to learn it. You have magic. You can make it
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.
My wife loves that series! XD
Series name?
He who fights with monsters by Shirtaloon
Fuck the square cube law, all my homies hate the square cube law
This would actually be a neat show. A solid time waster
I wholeheartedly agree.
I dig isekai /slice of life / crafting shows and this would be right up my alley.
I think Log Horizon built steam powered engines with a fire breathing frog or something. It was a small cut but I saw the possibilities.
But they’re in the body of a five year old, so now the entire village is scared of them.
as they should be.
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
pretty sure all the mecha shit in legend of khorra is because some engie got isekaid and nobody talked about it.
How does levitation remove that constraint? It is still exactly the same?
You can make something levitate, removing the need for it to be supported.
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.
If I wasn't so familiar with manga and anime this would sound disturbing. But this barely tickles the feeling.
imma need you to link that shit, or at least name it so I can find it myself.
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.
The rape is off camera and downplayed immensely, but 8t does happen from an objective viewpoint
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.
Also diffusion.
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
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
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.
Plot twist: using magic really burns through the calories!
I see this as a win
Considering e = mc^2, creating a small pebble would probably drain you dead.
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.
I was hoping the fat would be considered equalivelent exchange for equal mass.
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.
Bonds take energy to break and make. Some is released when they break. And those forces take energy to overcome.
Absolutely, and it is stated in FMA that that activation energy is theoretically derived from tectonic potential energy, somehow (although, of course, that turned out to be a convenient lie, in-canon)
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.
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.
Yeah there is another where this dude made guns and used lightning magic to turn them into rail guns. OP as hell.
Arifureta I think. He goes wild after getting some creation magic and made motorcycles and a replacement mech arm.
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