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Suppose we have a real-valued periodic function that satisfies the Dirichlet conditions. In this case its Fourier series converges. With some expedients this concept can be extended also to non-periodic...
Asked on 06/02/2021 by harprah
0 answerLet's say we have a nanoscale laser or led(5nm width/length/height) emitting photons(red, 650nm wavelength) in a direction parallel to its plane, then at 20nm distance in the direction of the...
Asked on 06/02/2021 by 6D65
4 answerIt is known that the Schrodinger equation is equivalent to the Euler equation (with a "quantum potential" term) and to the probability conservation equation (which is formally...
Asked on 06/02/2021
0 answerThere are three Theta angles in the $U(1) times SU(2) times SU(3)$ standard model: call them$$U(1): theta' F tilde{F}$$$$SU(2):theta'' F tilde{F}$$$$SU(3):theta''' F tilde{F}$$...
Asked on 06/02/2021 by ann marie cœur
0 answerA definition of a conventional unit cell of a lattice is one that contains the same point group symmetries as the overall lattice and is the smallest such cell. ...
Asked on 06/02/2021
3 answerSuppose we have a cylinder filled with air and a piston on top. Say a man stands on it, then...
Asked on 06/02/2021
2 answerIn the context of the standard model, I got the impression that gauge field theories are considered fundamental, and effective field theories can be derived from them for certain energy...
Asked on 06/02/2021
1 answerIn the proof of uniqueness theorem, we consider $$vec{E}_3 = vec{E}_2 - vec{E_1}$$ where $vec{E_2}$ and $vec{E_1}$ are electric fields which satisfy all the boundary condition required....
Asked on 06/01/2021
1 answerWhile studying quantum mechanics, I've seen two contradictory opinions about quantum logic. Some people say that it indeed defies classical logic (see Emilio Santos (1986). The Bell...
Asked on 06/01/2021 by Lemoine
0 answerLet us say we have a perfect gas in a cylinder with a piston, with section $A$. We place the cylinder over a thermal reservoir at a certain temperature....
Asked on 06/01/2021
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