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According to this source, "An isochronous curve of Leibniz is a curve such that if a particle comes down along it by the pull of gravity, the...
Asked on 12/26/2020 by Beau Horenberger
2 answerIn reading the classic text, "The Classical Theory of Fields", Third Edition, by Landau and Lifschitz, I found an "obvious" statement not so obvious to me. It is on...
Asked on 12/26/2020
1 answerIt makes sense to me that we can find some operator that gives us eigenfunctions that correspond to definite values for some desired observable. However, I do not see how...
Asked on 12/26/2020 by Jeff Bass
5 answerThe Flamm's paraboloid is a slice of the Schwarzschild metric by two spatial dimensions. This shows the space dilation, but without the time component doesn't really give...
Asked on 12/26/2020 by Jan Hudec
1 answerConsider a charged capacitor with its positive plate holding charge Q. Now I join the capacitor to an circuit with resistance R . So the capacitor starts to discharge. Small...
Asked on 12/26/2020
1 answerIn the book "Modern Quantum Mechanics" (by J.J. Sakurai and Jim Napolitano) page 44, infinitesimal Translation operator is given:$mathscr{J}left(d mathbf{x}^{prime}right)left|mathbf{x}^{prime}rightrangle=left|mathbf{x}^{prime}+d mathbf{x}^{prime}rightrangle$ after this, book mentioned properties of the...
Asked on 12/26/2020 by Butane
1 answerI have difficulties understanding the following (Everything out of the book Gravity by Poisson and Clifford): We have a quantity $mathfrak{g}^{alpha beta}$ called gothic inverse metric in prior unspecified...
Asked on 12/26/2020 by schoeni
0 answerFrom what it was written, the calculation of effective mass in semiconductor had two different types, one is effective mass for density of states, through geometrical...
Asked on 12/26/2020 by ShoutOutAndCalculate
0 answerMy question can be boiled down to a thought experiment.Assume you have a space ship in an empty universe. This space ship is capable of a constant $1 m/s^2$...
Asked on 12/26/2020 by Ej Sizemore
3 answerFor general gauge theories, the total Lagrangian density is given as $$L=-frac{1}{4}F^2+L_M(psi, Dpsi)$$ where $L_M(psi, Dpsi)$ is the matter field with the ordinary derivative replaced by the covariant...
Asked on 12/26/2020
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