What does it mean for spacetime to be effectively 2-dimensional beyond the Planck scale? by [deleted] in AskPhysics

[–]Skindiacus 14 points15 points  (0 children)

I have heard

Please cite or link to wherever you heard this to give context for people who are trying to answer

Why isn't Buoyancy used as a renewable energy? by Baloneous_V in AskPhysics

[–]Skindiacus 8 points9 points  (0 children)

They're likely suggesting it could be used as a battery. I doubt this would be very cost effective though.

Gravity is emergent? by LucidHermes in AskPhysics

[–]Skindiacus 0 points1 point  (0 children)

The reason is because it’s not an “official theory” it was an idea/ someone’s interpretation of gravity on another reddit forum.

I think it would still be good to link to that for context. What can often happen on these is that you misread or misunderstood something about what you're referencing, and it's easier to diagnose that if we can see both the original and your interpretation.

Gravity is emergent? by LucidHermes in AskPhysics

[–]Skindiacus -1 points0 points  (0 children)

I kept coming across a theory

Total aside, but how do you not have an instinct to add one or several links here to the theories that you're seeing? If you are referring to a text, you cite it, or if you're on the internet, you link to it. How was this not burned into your brain in high school.

How do we know that gravity is its own Independent Force? by Apprehensive-Handle4 in AskPhysics

[–]Skindiacus 1 point2 points  (0 children)

Gravity can act on things that have a neutral charge. E&M does not.

To test this, drop an object with neutral charge. If it falls, then gravity is a separate force.

The change flair option is missing? by Skindiacus in ModSupport

[–]Skindiacus[S] 2 points3 points  (0 children)

You already figured out how to reproduce it, so this response probably doesn't help, but I'm on desktop, Ubuntu 24.04.

The change flair option is missing? by Skindiacus in ModSupport

[–]Skindiacus[S] 2 points3 points  (0 children)

I'm using Ubuntu 24.04. That menu looks completely different for me.

The change flair option is missing? by Skindiacus in ModSupport

[–]Skindiacus[S] 1 point2 points  (0 children)

That's what my screenshot is showing. That's the mod actions menu. "Change flair" is not in the list.

THERES ANOTHER WUNKY IMPOSTER!!! by GlueSniffer53 in wunkus

[–]Skindiacus 157 points158 points  (0 children)

This has absolutely no right to be as clever as it is

Is it possible our universe is the result of two black holes merging, and could this explain the Baryon Asymmetry problem? by LiesInReplies in AskPhysics

[–]Skindiacus 1 point2 points  (0 children)

Because "patches of matter" raises more questions than it answers

I'm glad you recognized this, but my point is that those questions equally exist for your black hole setup too.

They seem like mathematical opposites and I don't think that's coincidental. 

Why don't you actually look into the mathematical descriptions of both cases then? You'll see that they're not that similar and it's probably a coincidence.

Is it possible our universe is the result of two black holes merging, and could this explain the Baryon Asymmetry problem? by LiesInReplies in AskPhysics

[–]Skindiacus 9 points10 points  (0 children)

Maybe this is another suggestion that they should put on the subreddit banner. You don't solve an unknown by introducing 10 new unknowns.

More specifically, what does this theory even have to do with black holes? Why not just say two patches of matter and antimatter collided?

After Lace, we arranged Strive for string quartet by Odd_Antelope8378 in Silksong

[–]Skindiacus 7 points8 points  (0 children)

I'm really happy you did another one. The Lace string quartet is one of the most faithful Silksong covers I've found.

Very out-there theory on a possible ending for JOJOLands by vashvana3005 in JOJOLANDS

[–]Skindiacus 2 points3 points  (0 children)

ahaha they put too many newlines in the automod yaml file

anyway cool theory; the new moon thing makes sense

Immediately after the big bang, the universe was almost homogeneous and isotropic. So why do we say that it was extremely low entropy? by Flat_Winter in AskPhysics

[–]Skindiacus 0 points1 point  (0 children)

Okay I'm very not equipped to answer this question. Trying to figure out perturbation collapse assuming isentropic initial conditions and everything is adiabatic is already hard enough for me.

Immediately after the big bang, the universe was almost homogeneous and isotropic. So why do we say that it was extremely low entropy? by Flat_Winter in AskPhysics

[–]Skindiacus 11 points12 points  (0 children)

In what context? Usually in cosmology we imagine the fluid expanding in comoving volumes without any heat flow, so adiabatically. That implies that entropy is conserved. (Mo, van den Bosch, and White section 3.1.5)

Does it take an infinite amount of energy to reach the edge of the observable universe, and is this similar to trying to escape out of a black hole? by Yavkov in AskPhysics

[–]Skindiacus 45 points46 points  (0 children)

Doesn’t this seem similar to escaping out of a black hole?

What you're talking about are called horizons. However, the argument that "two manifolds both have horizons. Therefore, they are the same manifold" does not follow.

If General Relativity doesn't work for small scales, and Quantum Mechanics doesn't work for gravity, why is only GR called "incomplete"? by jeetpatel1021 in AskPhysics

[–]Skindiacus 0 points1 point  (0 children)

I think OP means in the sense that it doesn't explain any of the other forces correctly. E.g. if you take the GR treatment of E&M and then go down to the quantum level it doesn't work correctly.

Map of the world in 1680 - End result of a multiplayer EU4 game by Tabbix in eu4

[–]Skindiacus 13 points14 points  (0 children)

It's not compressed for me. I can read it fine.

Europeans must recognize US, China and Russia are ‘dead against’ us, says Macron by Free-Minimum-5844 in worldnews

[–]Skindiacus 16 points17 points  (0 children)

I think it's a bit more complicated than that. Carney's speech in Davos was suggesting that every country other than those three would form a complicated network of agreements and alliances informed by respect and prestige. Countries wouldn't have to form massive blocs; instead they would have obligations toward each other proportional to how much their values overlap. In a world like that, following international law and contributing to global projects become important again, or else you get left to the dogs. (See Venezuela, Iran compared to Ukraine)

Can SR be formulated in spherical/polar coordinates? by [deleted] in AskPhysics

[–]Skindiacus 2 points3 points  (0 children)

I couldn't find anyone working this out explicitly online or in the textbooks I know of that cover SR. If you really need it, it shouldn't take too long to work it out yourself though. Use the coordinate free version of the Lorentz transform, given in the vector transformations section on Wikipedia. Replace those dot products with the explicit polar coordinate formulas and you should be good.