# Tagged Questions

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I'm following a derivation of the Klein-Nishina formula from scratch and this is what I have so far: $P_{e,i} = m_0\gamma_u[1,u]$ and $P_{\gamma,i} = [\frac{\hbar\omega_i}{c^2}, ... 0answers 49 views ### Including special relativistic effects in momentum in Heisenberg's Uncertainty Principle I've been told that an electron is somewhere within the space of$10^{-10}m$and am supposed to find the uncertainty in its velocity. Simply applying$m\Delta x \Delta v \geq \frac{h}{4\pi}$results ... 2answers 46 views ### How would an electron bunch/beam look different in the rest and lab frames? With respect to special relativity, I was wondering how the spatial dimensions would differ between the rest and LAB frame of an electron beam. System: Electron bunch/beam traveling in linear motion. ... 4answers 620 views ### Find total energy and momentum of an moving electron in a rest frame I have an electron moving with speed$u'$in a frame$S'$moving with speed$v'$relative to a rest frame$S$. How do I find the total energy and momentum of the electron in the rest frame$S\$? I ...
Is there a formula for the effective speed of electron currents inside superconductors? The formula for normal conductors is: $$V = \frac{I}{nAq}$$ I wonder if there are any changes to this ...