Ethan
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 Dec 18 awarded Popular Question Oct 26 awarded Popular Question Jul 2 awarded Curious Jun 8 comment Mathematical form of chemical potential difference and entropy production this is nice. I'd think we need to use the product rule to differentiate, so there'd be another term. But this still doesn't answer why the force has the form it does (logarithm of ratio of fluxes), which is what I was mostly interested in, and why I can't mark this as "the answer" May 19 awarded Yearling Sep 4 asked Mathematical form of chemical potential difference and entropy production Mar 8 comment Does a constant of motion always imply a Hamiltonian formulation? Thanks! I was wondering about that! Mar 8 revised Does a constant of motion always imply a Hamiltonian formulation? added 51 characters in body Mar 8 comment Does a constant of motion always imply a Hamiltonian formulation? shoot I posted this in math also and forgot to make the important edit. I want the constant of motion to be a function of all the variables in the system. I will add the edit above. Mar 8 asked Does a constant of motion always imply a Hamiltonian formulation? Mar 6 comment The Dual Nature of Matter As Feynamn put it, don't worry if you don't understand QM, because no one does, not even Feynman. Meanwhile, master the math! Mar 6 answered The Dual Nature of Matter Mar 5 answered What are some critiques of Jaynes' approach to statistical mechanics? Jan 27 comment Ideal gas concentration under temperature gradient So I'm thinking that sounds good but I'm working with an ideal gas so doesn't that make the chemical potential 0 and thus not part of the discussion really? And can you possibly address the pressure component? Is it right that at equilibrium the pressure will be uniform (as you've argued for chemical potential)? If it wasn't an ideal gas, then I'd hope I could get to the solution two ways, one by doing what you have done, and the other by making the pressure argument but using the proper equation of state (no longer PV = nkT) Jan 27 comment Ideal gas concentration under temperature gradient precisely my thinking. except fortunately I do all my physics for fun these days so mistakes are only to learn from, not lose from! Jan 27 comment Electric force in DNA molecule yes exactly. be sure you realize that the forces are symmetric - the force on adenine is the same as that on thymine (this is newtons third law). Jan 27 awarded Supporter Jan 27 comment Electric force in DNA molecule that looks pretty good. assuming you only have to consider the forces due to the two hydrogen bonds (O~H and N~H), then you've done the O~H part. Jan 27 answered Is it possible for a physical object to have a irrational length? Jan 27 awarded Teacher