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Someone knows a physical derivation of the Navier-Stokes equation? Mainly the stress tensor. A lot of authors simply "jumps" the stress tensor and it's the more important...
Asked on 07/26/2020 by Magela
2 answerI am a bit confused on how GTR uses intrinsic curvature instead of extrinsic curvature. Maybe it is just a misunderstanding, but I will do my best to describe my...
Asked on 07/26/2020 by Jonas
3 answerI am working with a complex solution of 2 proteins and salt. I have been trying to use DLVO (Derjaguin, Landau, Vervey, and Overbeek) theory to get an approximation of...
Asked on 07/25/2020 by Marina
0 answerI am running an experiment where I have a vacuum chamber attached to a vacuum pump and a pressure sensor: I use the pump to vary the pressure in the...
Asked on 07/25/2020
1 answerThere was a fill-in-the-blank question in my university test. It was something like:Quantum mechanics deals with ____I wrote "everything" and my lecturer gave me no marks. He was expecting...
Asked on 07/24/2020 by Rahul R
8 answerEven though the magnetic field is a non conservative field, the potential energy of a magnetic dipole (current-carrying log or bar magnet) is defined in a magnetic field. How can...
Asked on 07/24/2020 by Ashu tosh
0 answerWhile doing some lazy calculations, I came across a curiosity that I'm unable to interpret. It is well known that the cosmological constant $Lambda sim 10^{-52}~mathrm{m^{-2}}$ is usually...
Asked on 07/24/2020
2 answerIf I am driving at night and fall asleep, and when I wake up I see a wall in front of me. What should my instincts be :Should I just...
Asked on 07/23/2020 by Ohw
3 answerI would like to measure whether my source emits entangled photon pairs. To that order I want to build a $g^{(2)}$ experiment, which measures photon coincidence counts as a...
Asked on 07/23/2020 by photongirl
2 answerAn infinitely thin dipole radiates an electromagnetic wave which in the far field is vertically polarized, with zero horizontally polarized component. I am trying to understand what happens when...
Asked on 07/23/2020 by reiruof
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