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Modern experiments, especially in fields like particle physics, often collect far more data than they can process and save. Similarly, I can imagine that historical experimenters were limited by how...
Asked on 01/19/2021 by Heisenbugs
0 answerIs it possible to formulate classical electrodynamics (in the sense of deriving Maxwell's equations) from a least-action principle, without the use of potentials? That is, is there a lagrangian which...
Asked on 01/19/2021 by Murod Abdukhakimov
5 answerObviously, two chunks of pure Iron-56 won't pass through each other like photons go right through each other... Why is that?...
Asked on 01/18/2021
0 answerI have heard in popular science that there is a law of "conservation of information." Some times this is described as: for any event that happens, there is enough information...
Asked on 01/18/2021
5 answerIs it correct to say, that the Newton's laws (or a Newtonian system) is reversible if the friction isn't considered (the fact that the time is of second order $frac{d^2x}{dt^2}$)...
Asked on 01/18/2021 by Hamid Mohammad
3 answerSuppose I have 2 charges of arbitrary charge separated by a distance of 2a. The potential at a point, say A, finite distance from the two charges is the sum...
Asked on 01/18/2021 by Sathvik R.
1 answerGiven $pV=nRT$, where; $p$ = Pressure, $V$ = Volume, $n$ = Number of moles of gas, $R$ = Gas constant and $T$ = Temperature...
Asked on 01/18/2021
1 answerAccording to Noether's theorem, if the Hamiltonian is invariant under translations in a given direction, then the corresponding linear momentum is conserved. And if the Hamiltonian is time-independent, then the...
Asked on 01/18/2021 by gwtw14
1 answerMy dad must decide whether to buy 1.67 v. 1.74 Nikon lenses for his eyeglasses. Can someone please explain like I'm 5 this purported optometrist's comment on...
Asked on 01/18/2021
0 answer$$hat{H}= -tsum_{langle i,jrangle} c_{isigma}^{+}c_{jsigma}+h.c$$ For this Hamiltonian a lattice with all sites doubly occupied would give 0 in real space and for single occupancy it gives $-4t^{2}L$ following...
Asked on 01/18/2021 by Hydro
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