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so I was going over my notes on classical mechanics and just started to review rotation matrices which is the first topic the book starts with. On page 3 ...
Asked on 11/29/2020 by Elvis
1 answerGerd Binnig, Nobel laureate in physics in 1986, proposed in his article "The fractal structure of evolution" 1 that everything in the universe, including its laws, had...
Asked on 11/28/2020
1 answerWhat I will say is not exclusively true for the KG equation, but let's take it as a simple example.When proving the invariance of its action under a Lorentz...
Asked on 11/28/2020 by Arthur
1 answerI am currently studying Optics, fifth edition, by Hecht. Chapter 2.11 Twisted Light says the following:Such beams have what’s called...
Asked on 11/28/2020
1 answerI cannot understand why people say RG fixed point is scale invariant. Scale invariant means the action $S[phi]$ of the theory is invariant under scale transformation like ...
Asked on 11/28/2020 by Jiahao Mao
1 answerI was wondering what would happened if we titled the screen in Young's double slit experiment (YDSE) by a certain angle say $theta$. What effect would it have on...
Asked on 11/28/2020
1 answerI am struggling to understand how they have ploted some functions regarding the Ising model in the mean field approximation (Curie-Weiss model) in my lecture notesFor more details,you can...
Asked on 11/28/2020
0 answerFermat's principle is a boundary value problem which gives possible paths as it's answer. And I understand how it's applied to give possible paths between two arbitrary points. And following...
Asked on 11/28/2020 by Examination12345
0 answerThe Wikipedia article on momentum defines momentum as in classical mechanics:… momentum is the product of the mass and velocity of an object.However, an electromagnetic field has...
Asked on 11/28/2020
4 answerI often see band diagrams of of solids and in cases of semiconductors, I often see a band gap separating the valence band and conduction band while the Fermi...
Asked on 11/28/2020 by stratofortress
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