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I’m trying to understand the External Field Effect (EFE) in Modified Newtonian Dynamics (MOND) and how it is conceptually distinct from GR and Newtonian gravity. More specifically, the descriptions I...
Asked on 03/06/2021 by Astroturf
2 answerVarignon's theorem states that "If many coplanar forces are acting on a body, then the algebraic sum of torques of all the forces about a point in...
Asked on 03/05/2021 by yathish
2 answerI am confused about the definition of nematic order in crystals. In this paper https://www.nature.com/articles/nmat4138, they say that nematic order is "a lowering of the rotational symmetry...
Asked on 03/05/2021 by user165990
1 answerI am doing a quick calculation on how to calculate the pressure needed to inflate a perfectly spherical balloon to a certain volume, however I have difficulties with the fact...
Asked on 03/05/2021 by avanwieringen
3 answerSay a damped harmonic oscillator is at the far end of a dispersive, lossy medium governed by, say, Debye relaxation. I would like to determine what the optimal arbitrary input...
Asked on 03/05/2021 by 0xDBFB7
0 answerI have developed an interest in Celestial Mechanics. My math is weak but I'm determined to learn the math and physics required to understand it. I would like to know...
Asked on 03/05/2021 by O S
0 answerWe know that the 3 generations of quarks have a 3 by 3 CKM matrix which contains a complex angle that cannot be rotated away. And this CKM matrix complex...
Asked on 03/05/2021
0 answerSince the BRST charge operator commutes with the Hamiltonian of QCD, a physical state such as $q+bar q$ should not be allowed to evolve into an unphysical one like...
Asked on 03/05/2021 by Emmy
1 answerI'm reading "Quantum Physics" by Glimm & Jaffe. I came along a paragraph (or rather a footnote) that I want to understand better: ...
Asked on 03/05/2021
1 answerIf lightning strikes a metal pole, will it bend because of the force exerted by Earth's magnetic field on the current? ...
Asked on 03/05/2021
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