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 Apr 11 awarded Editor Apr 11 comment Interpreting the Fourier transform of a Gibbs measure @fs137 I edited the question to add a little more context. Apr 11 revised Interpreting the Fourier transform of a Gibbs measure added 575 characters in body Apr 11 awarded Commentator Apr 11 comment Interpreting the Fourier transform of a Gibbs measure @fs137 It might, but I'm a bit unclear on where the Fourier transform arises. It seems like that transformation (which is just completing the square?) is just used to evaluate partition functions, but maybe I'm missing something. In my application I'm thinking of $x$ as a "classical" state (in fact, for me, $x$ is really just a digital image...) Apr 11 comment Interpreting the Fourier transform of a Gibbs measure @fs137 Interesting! I'd be happy to see an example, if you happen to have one (or just a reference is fine). Apr 11 asked Interpreting the Fourier transform of a Gibbs measure Apr 6 comment Estimating “attributes” of a single photoelectric interaction @CuriousOne OK, interesting. So the answer is essentially "it's complicated". I can sort of live with that for the time being. Any books you recommend that might help? Apr 6 comment Estimating “attributes” of a single photoelectric interaction So what physical thing are we estimating "attributes" of, a "ray"? How are we detecting single photons then (I thought rays consisted of many photons)? I'm perfectly happy to accept something as a model, but I'd at least like to know how to talk about it correctly. If I say "we estimate the position, direction and energy of an incoming photon" people (physicists) seem to get annoyed. Apr 6 comment Estimating “attributes” of a single photoelectric interaction @CuriousOne I'm trying to understand the theory behind such detectors. I understand GEANT can be used to simulate them (in fact, I'm working on a code that uses it), but I'm more interested in knowing what the correct theory is. I feel I'll get in trouble if I say something like "we estimate the position of the photon" to a physicist. Apr 6 asked Estimating “attributes” of a single photoelectric interaction Feb 23 comment Can someone reconcile the Boltzmann transport equation with the Maxwell equations for photons/light? Did you ever find any good references relating RTE to Maxwell? Jan 11 awarded Popular Question May 7 awarded Supporter May 1 comment Calculating Reynolds number for a viscous droplet This was for a class project a couple years ago. We were trying to analyze the formation of the single, small droplet, specifically the dependence on viscosity. It's kind of a moot point for me personally now - I'm sure there are well established fluids theories at work here, and my research is in another area entirely. Oct 11 awarded Nice Question Dec 7 comment Calculating Reynolds number for a viscous droplet I don't think surface tension is constant since I'm changing the density of the fluid as well, in fact over the past couple days I've realized that it might play a much bigger role than I previous thought. Dec 4 comment Calculating Reynolds number for a viscous droplet Is there a reasonable way to calculate surface tension here (either in theory or empirically)? Something with contact angles maybe? Dec 4 awarded Student Dec 4 comment How should a theoretical physicist study maths? Abstract algebra will be useful as well.