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My question may contain wrong assumptions:I believe static electricity present in a workshop because of friction may be caused by electrons or negative ionsI believe that it is somehow possible...
Asked on 05/28/2021 by adrienlucca.wordpress.com
1 answerI try to calculate the elastic constant tensor for some organic molecular crystals.There are plenty of accounts in the literature where people do that, using atomicresolution models and...
Asked on 05/28/2021 by Michael Brunsteiner
2 answerSo I realize I am asking a pretty obvious, intuitive question. All of us have witnessed object rotating in everyday life when we nudge/push them from the side (not from...
Asked on 05/28/2021
8 answerNear the end of chapter 2 of R. Shankar's book Principles of Quantum Mechanics, he talks about two consequences of invariance of the Hamiltonian under a regular canonical transformation. My...
Asked on 05/28/2021
1 answerI've been thinking about this problem for a while, since I want to see if a compact accelerator driven nuclear reactor can be built for powering aircraft and rockets. The...
Asked on 05/28/2021 by user11377
1 answerI cannot comprehend how the increasing of amplitude of an electromagnetic wave increases the number of photons. How does this even happen. I am also not able able to make...
Asked on 05/28/2021
2 answerI read in my textbook that the potential energy is a system property. In case of gravitational potential energy, the potential energy is a shared property of both the body...
Asked on 05/28/2021
3 answerIn deriving the Josephson Effect, the ansatz wavefunction is given as $sqrt{n} exp{(idelta)}$ which leads to the Josephson Relations. It seems that this wavefunction is used because $<psi|psi>$...
Asked on 05/28/2021
1 answerAccording to this: http://astronomy.swin.edu.au/cosmos/D/Density+Parameter The density parameter alone determines the fate of the universe (if its less than 1 expands forever, etc.). But according to wikipedia that's...
Asked on 05/28/2021 by pepitoz
1 answerIn Riemannian Geometry (or Pseudo-Riemannian too), all of the operations performed are in general position dependent. For example, the metric tensor $g_{munu}(x)$ is dependent on position $x^i$ for $i=0,cdots,N$....
Asked on 05/28/2021
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