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I've read elsewhere about the energy of a wave or wave packet, and the amplitude of its probability amplitude, affecting its odds of quantum tunneling... But what about the wavelength...
Asked on 01/02/2022
2 answerThe propagation of light in optical fibers is governed by the equation $ifrac{partial A}{partial z} = frac{beta_2}{2}frac{partial^2A}{partial T^2} - gamma|A|^2A$ where $A(z,T)$ represents the amplitude of the field...
Asked on 01/02/2022
3 answerThe scattering $S$ operator which is defined to be the operator corresponding to $S$ matrix should be rotational invariance, does this imply $S$ operator is a scalar...
Asked on 01/02/2022
1 answerThis refers to my other question Why is the ideal gas law only valid for hydrogen?. In the update, my teacher said that hydrogen is closer to an ideal...
Asked on 01/02/2022
1 answerI'm studying the book Techniques of Differential Topology in Relativity by Roger Penrose and I'm stuck in an exercise he left to the reader. We say that the spacetime ...
Asked on 01/02/2022
0 answerA rigid body motion can be decomposed into translation and rotation. My question is, given a rigid body motion velocities of all points in the body, how to decompose this...
Asked on 01/02/2022
2 answerWell, elementary particles have no moment of inertia $I$. But what is the nearest possible answer to the question for a free, spinning electron? In general, one has a...
Asked on 12/31/2021
0 answerThe FRW metric can be written in conformal coordinates to give:$$ds^2=a^2(eta)(-deta^2+dmathbf{Sigma^2}),$$where $eta$ is the conformal time and $mathbf{Sigma}$ ranges over 3-dimensional space of uniform curvature....
Asked on 12/31/2021
2 answerCoercivity of 99.8% pure iron is 1 oe but that of 99.95% pure iron is 0.05 oe.Why such difference while both have same retentivity? Edit: I mean to say if...
Asked on 12/31/2021 by TheVariant
1 answerSuppose we have a point charge moving inside the halfspace $z>0$ with a given trajectory $r(t)$. Assume that $z>0$ halfspace is Vacuum and the $z<0$ halfspace...
Asked on 12/31/2021
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