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location Switzerland
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seen Mar 18 '12 at 11:45

I'm a software engineer and distributed intelligent specialist.


Feb
6
awarded  Popular Question
Dec
9
accepted Second law of thermodynamics and a bunch of magnets
Dec
6
comment Second law of thermodynamics and a bunch of magnets
Good point indeed, but that's stackexchange.com, not Applied Physics Letter, and you're more than welcome to update my question if it does not reach your own quality requirements.
Dec
6
comment Second law of thermodynamics and a bunch of magnets
that does not matter, if you had ever played with free-standing permanent magnets (regardless of their shape), you would have noticed that their original orientation does not matter: the repulsive state is an unstable equilibrium point, and whenever they are close enough to repel each other, they align and attract each other. Anyway, that's not the point of the question, as genneth could easily understand. If you are really interested in that question, I am sure you will be able to set up a very nice experiment: apexmagnets.com
Dec
6
comment Second law of thermodynamics and a bunch of magnets
Excellent answer! Took me a while to figure why damping was an argument, but it is indeed the case. At first I was thinking only of the mechanical friction with the ground.
Dec
6
revised Second law of thermodynamics and a bunch of magnets
added 10 characters in body
Dec
6
comment Second law of thermodynamics and a bunch of magnets
The question makes complete sense, this is a thought experiment, and no specific details are required except for the fact that these magnets are within attraction distance and the static friction is very small (much smaller than the magnetic force).
Dec
6
comment Collision time of Brownian particles
thanks a lot, i couldn't upvote enough for your answer :)
Dec
6
asked Second law of thermodynamics and a bunch of magnets
Sep
20
accepted Collision time of Brownian particles
Apr
15
awarded  Benefactor
Apr
8
awarded  Promoter
Apr
7
comment Collision time of Brownian particles
@Georg: I don't think that this will almost never happen, at least not in 2d. Recall that my particles are not points, but they have a finite, non-zero radius (and therefore a finite, non-zero probability of encountering).
Apr
7
revised Collision time of Brownian particles
added 156 characters in body
Apr
6
awarded  Editor
Apr
6
comment Collision time of Brownian particles
Sorry about that, of course these particles have a finite radius... I updated the question accordingly.
Apr
6
revised Collision time of Brownian particles
added 55 characters in body
Apr
6
asked Collision time of Brownian particles
Mar
2
comment Reynolds number, turbulence regime, and drag force
Well, the answer is more complicated than I hoped, but that's interesting, thanks.
Mar
1
awarded  Scholar