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I know that astronomers observe jets that apparently move faster than light but really don't. I think I can simulate something that looks superluminal using just a bunch of x-mas...
Asked on 06/11/2021
1 answerThis is proof that $L'$ represents same equation of motion with $L$ through Lagrange eq.I understand $L'$ satisfies Lagrange...
Asked on 06/11/2021 by cykskmy
5 answerThere are eddy current brakes used with metal plates to stop trains. It converts kinetic energy of the metal plate to heat via eddy current on it. So what if...
Asked on 06/11/2021
1 answerWhen readingReal-time near-field terahertz imaging with atomic optical fluorescence. C. G. Wade, N. Šibalić, N. R. de Melo, J. M. Kondo, C. S. Adams & K. J. Weatherill. ...
Asked on 06/10/2021
1 answerI mistakenly poured water on my the area of my TV remote which has the cell and apparently the circuit connections.A thing to ponder is that why doesnt a circuit...
Asked on 06/10/2021
1 answerKerr metric has the following form: $$ds^2 = -left(1 - frac{2GMr}{r^2+a^2cos^2(theta)}right) dt^2 + left(frac{r^2+a^2cos^2(theta)}{r^2-2GMr+a^2}right) dr^2 + left(r^2+a^2cos(theta)right) dtheta^2+ left(r^2+a^2+frac{2GMra^2}{r^2+a^2cos^2(theta)}right)sin^2(theta)...
Asked on 06/10/2021
3 answerWe consider a bilinearly coupled two-oscillator Hamiltonian of the following form$$H=dfrac{p^2_s}{2m_s}+V(x_s)+dfrac{p^2_B}{2m_B}+dfrac{m_B}{2}omega^2_Bleft(x_B-dfrac{c_B}{m_komega^2_B}x_sright)^2.$$ Can...
Asked on 06/10/2021 by ewf
0 answerIn the QFT book of Ryder, he states that Lorentz boost transformations do NOT form a group. This is due to the boost generators $textbf{K}$, i.e. they do not...
Asked on 06/10/2021
1 answerLet's say I have a canonical partition function for the canonical assemble related to the Helmholtz free energy $A$, given by$$A=-kTln Z$$ Now, I want to derive...
Asked on 06/10/2021
1 answerIn a photoelectric experiment, if the frequency of incident light is slightly raised while holding intensity constant, I understand that the number of incident photons decreases. This in turn results...
Asked on 06/10/2021 by Dr Coconut
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