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I am trying to reconcile two different ways of producing the Schrödinger equation in momentum space starting from the Schrödinger equation in abstract notation. The time dependent Schrödinger equation of...
Asked on 12/28/2020 by Arnab
1 answerSay that we have a point source. And at some distance away from the source point, the wave front is a non-closure curved line. Say somehow we absorbed all other...
Asked on 12/28/2020 by Su Grape
0 answerOn the Wikipedia page for the Twin Paradox, the example lays out the perspective of each twin in turn. Both twins are portrayed as understanding the ship's velocity as v,...
Asked on 12/28/2020 by Justin Poirier
2 answerI Know that bound currents are due to magnetization of any material while Eddy current is due to rate of change of flux through a metal so I wanted...
Asked on 12/28/2020 by user215805
0 answerI would like to understand why a Bourdon tube works, the working principle is described on wikipedia as:The Bourdon pressure gauge uses the principle that a...
Asked on 12/28/2020 by pindakaas
0 answerThe phase transition from a classical atomic gas to a Bose-Einstein condensate takes place when a critical phase space density is reached, i.e. when the density of the particles with...
Asked on 12/28/2020 by HolgerFiedler
1 answerThe following image is from Greiner's book, Field Quantisation, where he carried out the derivative in question. The only way I could make sense of it, was that the derivative...
Asked on 12/28/2020 by B.M. Lamine
2 answerIn the first part of Section 4, the author givesbegin{equation}S = frac1{16pi G^N_{(5)}}int(-G_{(5)})^{1/2}R^{(5)}d^5x= frac1{16pi G^N_{(4)}}int(-G_{(4)})^{1/2}Big(R^{(4)}- frac32partial_muphipartial^muphi - frac14e^{3phi}F_{munu}F^{munu}Big)d^4x.end{equation}How is this reduction obtained? I...
Asked on 12/28/2020 by KoKo_physmath
1 answerI have read that the incompressible Navier Stokes equation is preserved by the scaling $$x',y',z'=lambda x, lambda y, lambda z$$$$t'=lambda^2 t$$$$u'=(1/lambda) u$$ As I understand...
Asked on 12/28/2020 by cmdfrills
0 answerQuestion is simple: I was asked to find the average speed of oxygen gas molecules at $T = 300^o K$. I thought the answer was simple too, as simple...
Asked on 12/28/2020 by aco
0 answerGet help from others!
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