Find answers to your questions about Physics or help others by answering their Physics questions.
With photons, holograms are easy: shine laser light at a slit with an appropriate width, get a diffraction. Shine laser light that is in-phase with the source light at the...
Asked on 02/07/2021
1 answerI want to find the moment of inertia for a cylindrical segment, show below: On Wolfram MathWorld, I found a...
Asked on 02/07/2021
0 answerDoes molecular vibrational transition and consequent emission of infrared radiation involve electrons changing energy level? In wikipedia, about vibronic transitions it says "Most processes leading to the absorption...
Asked on 02/07/2021
3 answerIt is common to find models built on a compact spacetime. In mathematics, compactness is a very nice property $-$ and lot of powerful results depend on it.Buthow...
Asked on 02/07/2021
2 answerI learned from reading nLab (https://ncatlab.org/nlab/show/anti+de+Sitter+spacetime) that the anti-de Sitter Spacetime of dimension $d$, $AdS_d$, is homeomorphic to $mathbb{R}^{d-1} times S^1$. I tried to...
Asked on 02/07/2021
1 answerI'm reading the section on the LSZ reduction formula in Schwartz's QFT book and he talks about the action of free fields in the formula. Specifically he says (sec. 6.1.1,...
Asked on 02/07/2021
1 answerAn empty ball, of mass $m$ and moment of inertia $I = frac{2}{3}m.r^{2}$, is rolling across the path shown below: ...
Asked on 02/07/2021 by Hilbert
1 answerJ.-P. Derendinger writes in his book the following lagrangian density for free fermions in chiral decomposition:begin{equation}isum_{n=1}^3 left[ overline{Psi}^{(n)}_{Q,j,alpha} gamma^mupartial_mu Psi^{(n),j,alpha}_Q +overline{Psi}_{U^c}^{(n),j} gamma^mupartial_mu Psi^{(n)}_{U^c,j} +overline{Psi}_{D^c}^{(n),j} gamma^mupartial_mu Psi^{(n)}_{D^c,j}+overline{Psi}^{(n)}_{L,alpha} gamma^mupartial_mu...
Asked on 02/07/2021
0 answerIn many textbooks the typical story is told that there are exactly 2 possible heterotic theories in 10 dimensions, the $E8times E8$ as well as the $SO(32)$ theories....
Asked on 02/07/2021 by Rohbar
0 answerThe photoelectric work function is the minimum photon energy required to liberate an electron from a substance. However, what are the properties of a material that affect its photoelectric work...
Asked on 02/07/2021 by gstudent
1 answerGet help from others!
Recent Answers
Recent Questions
© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP