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If we want to form a diagram or calculate the angles at which the magnets need to be positioned in the Stern-Gerlach setup, how do we proceed? For example, if...
Asked on 11/27/2020 by Paradox 101
1 answerA Ruby laser emits 1W pulses of light with wavelength $6940 ± 10 overset{lower.5emcirc}{mathrm{A}}$. What is the coherence length of the ruby laser? My question is that what would...
Asked on 11/27/2020 by luvjyotk
3 answerMattig's formula for any k: How to derive this equation without using General Relativity?...
Asked on 11/27/2020 by astronerd
0 answerIt is stated that the equation leading to Stokes law describes an equilibrium state, such as the upwards force is equal to the downward force: $$ 6pi reta v...
Asked on 11/27/2020 by Vlad Uskar
2 answerThere are statements about Goldstone fermions, or goldstino, seem confusing to me. (1) Goldstone boson requires a continuous symmetry spontaneously broken. Does Goldstone fermion imply continuous SUSY spontaneously broken? But...
Asked on 11/27/2020
0 answerI am a bit confused about the two notations for partition functions, that is the continuous form $$Z=frac{1}{h^3}intmathrm{d}boldsymbol{p}mathrm{d}boldsymbol{r}mathrm{e}^{-beta H(boldsymbol{p},boldsymbol{r})}$$ and the discrete form $$Z=sumlimits_i mathrm{e}^{-beta H_i} , .$$ First of...
Asked on 11/27/2020 by Guiste
5 answerCan there be cases where it is different from $c$ squared? If so in what situations would it differ?...
Asked on 11/27/2020 by VCA
3 answerThe FLRW metric, in the case of positive scalar curvature, is: $ds^2 =- c^2 dt^2+a(t)^2left(dw^2+sin^{2}w(dtheta^2+sin^2theta dphi^2)right)$. The Birkhoff’s theorem states that "any spherically symmetric solution of the vacuum field...
Asked on 11/27/2020 by Andrea Di Pinto
1 answerI hope there is a method to calculate berry connection of a Hamiltonian numerically, in order to calculate $theta$-term like:$$theta=frac{1}{4 pi} int d^{3} k epsilon^{i j k}...
Asked on 11/27/2020
0 answerI have a question! I was learning about JJ Thomson's Cathode Ray Tube experiment and I understand why the ray goes up when it passes through a Wien's filter, but...
Asked on 11/27/2020 by Adolf
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