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When one solves Laplace's equation for charge distributed on a spherical surface: $nabla^2V = 0 $ in spherical coordinates, one can obtain a solution that is a sum of...
Asked on 01/25/2021 by Rixcrix
0 answerMost coaches in Indian trains are non-air-conditioned, i.e., the windows can be opened. Recently, the government has planned to convert all coaches in some trains to A.C., citing the fact...
Asked on 01/25/2021 by rivu
1 answerI see at least two different definitions of Berry curvature in literature. One is given at Wikipedia$$Omega_n = isum_{nne n'}frac{ langle n|partial_{k_x} H|n'rangle langle...
Asked on 01/25/2021
1 answerCurrently I am taking an introductory class in conformal field theory and ran into some confusion. Everywhere I run into Laurent expansions of several important quantities, and (mostly) all of...
Asked on 01/25/2021 by Wwhite
3 answerI'm currently reading this book on flight dynamics but I'm having some trouble getting my head around the way the author derives some equations of motion. He starts by showing...
Asked on 01/25/2021 by José Alfredo Rosas Córdova
1 answerIf I have a mass on a string that follows SHM and I add a constant force in the upwards y-direction to the mass, how does its period change? We...
Asked on 01/25/2021
2 answerI am reading chapter 7 in the 3rd edition of Goldstein's Classical mechanics textbook and the expression for the Lorentz force is confusing me. I cannot scan it so I...
Asked on 01/25/2021 by Kristian Stokkereit
1 answerIn J.J. Sakurai's Modern Quantum Mechanics, he introduces the concept of 'Unitary Equivalent Observables'. If $|a^{'}rangle$ and $|b^{'}rangle$ are the orthonormal bases eigenkets of two non-commuting hermitian operators...
Asked on 01/25/2021
1 answerIn section 4.8, Energy dissipation in current flow, of Purcell and Morin's Electricity in Magnetism, the expression for the power expended by a resistor is derived. The sections includes the...
Asked on 01/25/2021 by Junaid Aftab
1 answerIn an earlier question about Einstein notation, a link was provided to a medical paper which used acoustic propagation to noninvasively detect the orientation of muscle...
Asked on 01/25/2021 by DumpsterDoofus
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