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Oct
26
revised Why are galaxies flat since it's an unstable configuration in 3d?
reviisions for clarification
Oct
5
revised Why are galaxies flat since it's an unstable configuration in 3d?
added 52 characters in body
Sep
30
comment In a nuclear reaction, where does the energy go?
Whether fusion is exothermic (like in the case of stars) is really the question.
Sep
30
answered In a nuclear reaction, where does the energy go?
Sep
28
comment Black holes - is any of these points of view more accepted?
"What is it about geometry which makes it impossible to escape?" I'm going to play the "wildcard" here: Their extra-dimensional pathways are too long and convoluted along their available degrees of freedom. While you might envision a simple point in 3-d (along with the space-time curvature) for the black hole. It's probably an oversimplification.
Sep
28
answered Speed of sound in vacuum
Sep
28
comment Why the galaxies form 2D planes (or spiral-like) instead of 3D balls (or spherical-like)?
This is so bizarre. Could not galaxies flatten due to chaotic mixing, violent relaxation, or perhaps because they're subject to interdimensional variance? Just kidding, bro. This is the type of horseshit I've been dealing with on SE.
Sep
27
revised Why are galaxies flat since it's an unstable configuration in 3d?
added 97 characters in body
Sep
26
revised How hot is aurora?
clarification
Sep
25
revised Why are galaxies flat since it's an unstable configuration in 3d?
better wording
Sep
25
comment Why are galaxies flat since it's an unstable configuration in 3d?
Thank you. However, why the assumption that there is hardly any momentum in the z-direction? In simulation, the bodies start with a random initial (3-d) vector. But do agree (and can only conclude) that the Universe is indeed a much more complex place than physics has imagined.
Sep
25
revised Why are galaxies flat since it's an unstable configuration in 3d?
added 90 characters in body
Sep
25
comment Why are galaxies flat since it's an unstable configuration in 3d?
@keshlam: Of course it's not a constraint. That's part of my point.
Sep
25
comment Why are galaxies flat since it's an unstable configuration in 3d?
@pela: What principle of Newtonian Mechanics allow galaxies to "relax" into disks?
Sep
25
comment Why are galaxies flat since it's an unstable configuration in 3d?
Well, like I say, anything above n=2 gives non-planar results.
Sep
25
comment Why are galaxies flat since it's an unstable configuration in 3d?
Well, I've run n-body simulations in 3-d. Anything above 2 bodies gives non-planar results and is unstable.
Sep
25
asked Why are galaxies flat since it's an unstable configuration in 3d?
Sep
25
comment How to derive the theory of quantum mechanics from quantum field theory
I suggest you look at my answer on <physics.stackexchange.com/q/19775/>;.
Sep
24
awarded  Autobiographer
Jul
20
comment Are we inside a black hole?
Copenhagen interpretation has nothing to do with the uncertainty principle.