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In the quasi-free electron model, only U shaped and flipped U shaped parabolic energy bands emerge. So I think one can not derive from the free electron model anything about...
Asked on 03/05/2021
1 answerA Lorentz transformation can be seen as a change in reference frame. So, after apply a Lorentz transformation to a system (or change the reference frame), how should the state...
Asked on 03/05/2021 by yin
0 answerMy body has various cavities, such as my throat, mouth, chest, and nose. This cavities have resonant frequencies. I also have a voice box, which creates sound. How do I...
Asked on 03/05/2021 by PyRulez
2 answerSuppose that Alice wants to teleport the state $|psi rangle = alpha |0 rangle + beta |1 rangle$ to Bob. My issue is why quantum teleportation is needed to...
Asked on 03/05/2021 by Mathphys meister
2 answerThe lightning is often a discharge in advance. The (negative) charge slide occasionally a little further on in the conductive channel, wherein said channel is highlighted each time something. The...
Asked on 03/05/2021
1 answerIn a projectile motion, consider the projectile to be launched from $(0,0)$ as traced to be on cartesian axes. Then the trajectory is given by$$y=x tan theta...
Asked on 03/05/2021 by Dorothea
1 answerA neutral kaon is a mix of a particle and antiparticle, in layman's terms. In layman's terms, how is this possible without there being annihilation?...
Asked on 03/05/2021 by A.Sa
1 answerI'm trying to propagate a light source with cross-spectral density$$W(x_1,x_2)=S_0delta(x_1-x_2)$$which is a completely incoherent light source. I want to find the field representation of the source (this...
Asked on 03/05/2021 by user192356
1 answerHow to calculate total force on any ferromagnetic cylindrical object put in a (i) uniform and (ii) non uniform magnetic field due to an electromagnet?...
Asked on 03/04/2021
0 answerDavid J. Griffiths in his "Introduction to Electrodynamics" (chapter2), says that the Electric field inside a cavity (in a conductor) which contains a point charge is nonzero. this is because...
Asked on 03/04/2021 by Amtgh
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