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I was curious reading about rutherfords alpha scattering experiment in which they used the thinnest gold foil available at the time. I was wondering after a 100years how thin the...
Asked on 07/10/2021 by Akif Ismail
1 answerModeling fluid flow in a coil seems very complicated, especially for turbulent flow. Having Navier-Stokes equations seems to be the right way to go, but I was wondering... can one...
Asked on 07/10/2021
0 answerI would like to express this spacetime interval for a spacetime with a monochromatic electromagnetic wave for which I believe $|E|=frac{q}{omega}sin(u)$ expressed in Rosen coordinates: $ds^2=-2dudv+C^2left( frac{q^2}{omega^2},2frac{q^2}{omega^2},omega uright...
Asked on 07/10/2021
0 answerLocality appears to be an omnipresent feature of physics, including within turbulent fluid dynamics. In 1941 Kolmogorov postulated that the turbulent energy cascade is driven by scale-local interactions, where the...
Asked on 07/10/2021 by Nik Gourianov
1 answerQ. A thin biconvex lens is kept on a plane mirror. When an object is kept at $20 cm$ in front of the lens, its image is formed at...
Asked on 07/10/2021
2 answerso in the 2nd page,when the dielectric...
Asked on 07/10/2021 by Hawkingo
1 answerSay that you want to find the equations of motion of a free relativistic massive point particle by minimizing the action $$S=-mintmathrm{d}tau,sqrt{eta_{munu}frac{mathrm{d}x^mu}{mathrm{d}tau}frac{mathrm{d}x^nu}{mathrm{d}tau}}.tag{1} $$ But I'm very confused, because it...
Asked on 07/10/2021
1 answerI am not familiar with Feshbach-Fano partitioning so this question may be trivial. The full Hamiltonian of an open quantum system consists of system+enviroment+interaction. This can be cast into an...
Asked on 07/10/2021 by user239970
1 answerin my lecture of theoretic mechanics my prof introduced the invariance of the lagrangian under gauge transformation. I know how to do it and why i am allowed do it...
Asked on 07/10/2021 by user123962
2 answerI am reading Di Francesco's "Conformal Field Theory" and in page 95 he defines a conformal transformation as a mapping $x mapsto x'$ such that the metric is invariant...
Asked on 07/10/2021 by MBolin
3 answerGet help from others!
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