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I am looking for an approximate analytical solution to the generalized Klein-Gordon equationbegin{equation}frac{partial^2{phi}}{partial{t^2}}+frac{partial^2{phi}}{partial{x^2}}+phi=0end{equation}using Fourier and subsequent asymptotic expansion. Initial condition is $phi(x,0)=Cmathrm{e}^{-x^2}$, with periodic...
Asked on 02/19/2021 by P. Wilford
1 answerWe often discuss mass-density, charge-density, and other such functions: $rho(x,y)$ for ultra-thin plates and $rho(x,y,z)$ for 3-d objects. The units for the output of these functions say mass...
Asked on 02/19/2021 by novawarrior77
5 answerIn inertial frame $mathcal{O}$, a region of space-time is filled with constant electric field $vec{E}$ and magnetic field $vec{B}$. Another inertial frame $mathcal{O}'$ has 3-veclocity $vec{V}$ relative to $mathcal{O}$. What...
Asked on 02/19/2021
1 answerThis is sorta a cross-post from my post in StackOverflow. Although, rather than seeking help with the code I'm here asking for help with a physical/mathematical/statistical problem associated with...
Asked on 02/19/2021 by Cavenfish
1 answerI am reading Section $3$ of this review titled The Strong CP Problem and Axions by R. D. Peccei and also the post here. A...
Asked on 02/19/2021
1 answerSince my initial study in QM I have found a lot of quotations about the constant of value "1/137", the fine structure constant. Generally the author gives an introduction about...
Asked on 02/19/2021
1 answerI want to do an experiment on magnetic levitation by increasing the magnetic field strength of the bar magnet. My experiment is mainly based on the effect on the levitation...
Asked on 02/19/2021 by Aditya Neupane
0 answerPoynting vector in a material with magnetic permeability $mu$ is defined as $mathbf{S}=frac{1}{mu}(mathbf{E} times mathbf{B})$ In certain media $mu$ can be negative. In that case, $S$...
Asked on 02/19/2021
0 answerWhen plotting the percentage of transmitted, reflected and absorbed laser power over the incident laser power on a 3C-SiC (200nm thick) sample, I measured that transmission stays almost constant, while...
Asked on 02/19/2021 by jochdi
0 answerWhy does a neutron get ejected when Aluminium-27 is hit with an alpha particle? It seems like:Al-27 + He-4 --> P-31 (stable) and a gamma/(s) as the nucleus re-arranges....
Asked on 02/19/2021 by Epideme
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