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visits member for 3 years
seen Dec 11 at 6:34

Feb
7
comment When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it?
@dmckee I agree, but I think the car is not yet at this regime.
Feb
7
comment When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it?
I'd say that the newtonian-gravity is not relevant.
Feb
7
answered When driving uphill why can't I reach a velocity that I would have been able to maintain if I started with it?
Feb
6
comment How does the correlation length of weather emerge?
I agree, but that's a totally different effect. It would be awefully wrong to say that the typical length-scale of the waves in lakes stems from the lake size, scaling-wise.
Feb
6
comment How does the correlation length of weather emerge?
The wave length in lakes is determined by the lake size? This sounds weird to me. The wavelength is typically a few orders of magnitude smaller.
Feb
6
asked How does the correlation length of weather emerge?
Jan
27
comment Scattering from a box potential of width $L$ doesn't reproduce a step potential in the limit $L \rightarrow \infty$
@Joe Well, unless your function grows exponentially for large $x$, you have no freedom in choosing the sign of $k$.
Jan
27
answered Scattering from a box potential of width $L$ doesn't reproduce a step potential in the limit $L \rightarrow \infty$
Dec
15
awarded  Yearling
Nov
3
awarded  Revival
Jul
10
answered Effect of boundary conditions on partition functions
Jun
26
awarded  Nice Answer
May
24
comment Crushing a magnetic field
I would suggest to add a "mumbo-jumbo" tag.
May
1
comment A conceptual problem with Euler-Bernoulli beam theory and Euler buckling
@Raskolnikov No, it has 2 derivatives less.
May
1
awarded  Student
May
1
asked A conceptual problem with Euler-Bernoulli beam theory and Euler buckling
Apr
2
comment Power laws and deterministic systems
This is a totally different question. The answer, in short, is that a deterministic system can be described deterministically. Very often, however, you can't do that because the system has too many degrees of freedom (e.g. sand-piles) so that a full deterministic solution is both infeasible and useless. In such cases, a probabilistic description usually casts more light on what is going on.
Apr
1
comment Deriving the Lagrangian for a free particle
I think the best advice one can give you is don't read Landau & Lifshitz. They are great books for reference, but practically impossible to learn from. If you're into analytical mechanics then Goldstein is a good place to start, or Arnold, if you're more interested in the mathematical aspects.
Mar
29
comment Is there analysis library for stress-strain data?
In that case, send my your credit card number and I'll do it for 500$!
Mar
29
comment Is there analysis library for stress-strain data?
I don't know of any software, but at least for the Young's modulus, yield stress and work it will be very easy. I doubt that you can get the fracture toughness from these data.