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In my E&M lecture, the professor said infinitely large systems (infinite parallel plate, infinitely long line charge, etc.) have zero/constant potential at infinity. Meanwhile, finite dimension systems (as long as...
Asked on 06/20/2021
1 answerI have simulated a high penentration metasurface design and want to fabricate it. |E|^2 decays above the metasurface with very long ~ 1um decay length.What would be a good...
Asked on 06/20/2021 by Jiaruo Li
0 answer"The RC circuit averages past history at the input with a weighting factor of e−Δt/RC."...
Asked on 06/19/2021 by Vibhor Sharma
2 answerSuppose there is a square conducting wire in a magnetic field....
Asked on 06/19/2021 by Gauri
3 answerIn class, we solved this problem: There is a Stern Gerlach apparatus oriented along the z-axis. A spin 1 particle goes through this, the states are called $|u_+rangle$, ...
Asked on 06/19/2021 by Marnie
0 answerA plasma physics question: for two counter-streaming beams of protons of the same density and a neutralizing electron background, what are the perturbations with the wave vector perpendicular to the...
Asked on 06/19/2021
1 answerQuestion: A rack is made from roll-formed sheet steel and hasthe cross section shown. Determine the location $(x, y)$ of thecentroid of the cross section. The dimensions...
Asked on 06/19/2021 by Sarah V.P
1 answerFor a diagonal metric $g_{munu}$ and an orthonormal tetrad with metric $gamma_{mn}=eta_{mn}=diag(-1,1,1,1)$, it can be proven by $$ g_{munu}dx^mu dx^nu=eta_{mn}{e^{m}}_{mu}{e^{n}}_{nu}dx^mu dx^nu$$that $${e_m}^mu=diag((-g_{00})^{-1/2},g_{11}^{-1/2},g_{22}^{-1/2},g_{33}^{-1/2})$$ Consider now the classic Schwarzschild metric with...
Asked on 06/19/2021
2 answerStarting the nuclear chain reaction isn't achieved trivially and depends on the design ((shot)gun or implosion). Can one be sure that with either of those designs the chain reaction (causing...
Asked on 06/19/2021
1 answerI am looking for introductory references for the Black Hole Information Paradox and trying to compile a sequential list through which someone familiar with the basics of QFT and GR...
Asked on 06/19/2021
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