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For this question, I really have tried to produce some working but the entire thing is just deeply confusing me. ...
Asked on 01/28/2021 by Sean Malcolm
1 answerI am reading Schwartz's QFT book and I am trying to verify (10.141) and (10.142). σ means Pauli matrix and $ϵ:=−iσ_2$.How to prove these relations?$$sigma^{mu}_{alphadot{alpha}}sigma^{nu}_{betadot{beta}}g_{munu}=2epsilon_{alphabeta}epsilon_{dotalphadotbeta} tag{10.141}$$...
Asked on 01/28/2021 by suna-neko
1 answerI was reading this post. It says that the electron produces a magnetic field due to its internal magnetic dipole which is given by $${boldsymbol mu}=...
Asked on 01/28/2021
3 answerPlasmons are quantized oscillations of the charge density in solids, and are found in basically all conducting materials in nature. As I am playing around with an electron microscope I...
Asked on 01/28/2021
1 answerFrom what I have read, as a conducting rod moves perpendicular to a uniform magnetic field, this will lead to a change in magnetic flux and therefore an emf will...
Asked on 01/28/2021 by Max604
1 answerI am currently studying precession, and have a question regarding the angular velocity of precession. Let's simply use a spinning top in this case. I understand that it is given...
Asked on 01/28/2021 by ivqm
0 answerGood morning, I'm trying to simulate a rigid body with some accelerometers attached to it. The aim is to simulate accelerometers readings that will be later fed into a Kalman...
Asked on 01/28/2021 by Marcellus
0 answerThe new SI defines the second as the hyperfine splitting transition time associated to the frequency of that transition of caesium-133, 9192631770 Hz, that is 12 decimals precision, but...I wonder...
Asked on 01/28/2021 by riemannium
1 answerI'm trying to show that the mass-luminosity for a fully convective star is$$L propto M^{frac{113}{66}}$$I know that the energy generation is via pp-chain and the opacity is due...
Asked on 01/28/2021
1 answerOne of the basic expression that goes without much thinking is the potential energy expression of a magnetic dipole in a magnetic field, $$ U = -mucdot B $$...
Asked on 01/28/2021 by mrinmoy_kundu
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