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Let's say that I have finite chiral transform and I would like to show invariance of Dirac's Lagrangian when $m=0$ under it. The chiral transform is defined as:$$psi(x)...
Asked on 11/06/2021 by Jānis Erdmanis
1 answerIn the Feynman Lectures on physics, Feynman says the amplitudes across a Josephson Junction should be related by the following, where the subscript denotes the side of the junction that...
Asked on 11/06/2021
2 answerI think compound microscope will also work if focal length of eyepiece is kept smaller than that of objective lens. I am just a beginner in physical optics. I understand...
Asked on 11/06/2021
3 answerYou often see it written or hear it said that the interior of atoms is mostly empty.This is an attempt to convey something about the nature of atoms to...
Asked on 11/06/2021
4 answerI enjoy the occasional hot drink, but place it below a small fan in order to cool it to a drinkable temperature. Unfortunately, as expected, I commonly forget about my...
Asked on 11/06/2021
10 answerThe article about gauge theory on Wikipedia contains the sentence "Lie group". How can we prove that the gauge transformations that are given in an article...
Asked on 11/06/2021
1 answerIn Newtonian Physics the general equation for the acceleration when there is a central force is $$frac{d^2vec{r}(t)}{dt^2}=frac{1}{m}frac{vec{r}(t)}{left|vec{r}(t)right|}f(vec{r}(t))$$ with $m$ being the mass, $t$ being the time, and...
Asked on 11/06/2021
2 answerTwo spherical conductors $B$ and $C$ having equal radii and carrying equal charges on them repel each other with a force $F$ when kept apart at some...
Asked on 11/06/2021 by Anshaj Shukla
2 answerI have a somewhat general question. If I have two loops of conducting wire, and I pass current through one, is the induced emf on the other loop the same...
Asked on 11/06/2021
2 answerIn Goldstein's classical mechanics the following passage is confusing me:We therefore have as the condition for equilibrium of a system that the virtual work of the applied forces vanishes: ...
Asked on 11/06/2021
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