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What does the dynamical mass of a galaxy represent? Is it the mass of the gas in the galaxy or the total mass of the galaxy? What can we infer...
Asked on 09/02/2021 by karthik gananath
2 answerIn Wikipedia article Coleman–Mandula theorem there's statement:Quantum group symmetry, present in some two-dimensional integrable quantum field theories like the sine-Gordon model, exploits a similar loophole.Are some examples...
Asked on 09/02/2021
0 answerI'm currently working on a research project about dielectric heating of some materials and I'm trying to understand the physics of this phenomenon before going any further. I'm especially trying...
Asked on 09/02/2021 by Experience111
2 answerIn the Space Exploration SE question Is there any possible reason to direct the electron gun specifically towards the ion trail behind an ion thruster? there is somewhat of...
Asked on 09/02/2021
1 answerA leaf is green, a pen is blue and so on because those objects absorb all colours and reflect only one colour. However when red light is incident on these...
Asked on 09/02/2021
4 answerI know how the center of mass is defined, mathematically. It is the mass weighted average position of all the particles of a system. But calculating centers of mass and...
Asked on 09/02/2021
3 answerI was just reading this article on the quasicrystalline approximation (QCA). The article abstract says the following:The quasicrystalline approximation (QCA) was first introduced by Lax to break...
Asked on 09/01/2021
1 answerI believe that a gravitational field has energy, as Weinburg wrote in his textbook Gravitation and Cosmology, on page 171: "... ... the gravitational field does carry...
Asked on 09/01/2021
0 answerI am trying to plot IN MATLAB the temperature profile of solidification of metal in manufacture of cylindrical billets.The metal...
Asked on 09/01/2021 by patilak
1 answerRecently during a discussion with a colleague we got into an argument. The discussion involved imagining a heated solid body at some temperature $T$ which is immersed in a...
Asked on 09/01/2021
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