yippy_yay
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The Momentum Operator in QM
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As opposed to classical mechanics, where a particle is represented by a momentum and position vector that have determined directions and magnitudes, in Q.M. the particle is in a "superposition" of ...

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In phase contrast microscopy, how does the phase difference between the diffracted light and the background light come to be?
1 votes

The Wikipedia Article - in its present form(11. of April 2020) is false: The annulus is not point focussed on the sample (object) plane, but illuminates it diffusely. See here for the correct optical ...

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Why does a force field leave the momentum operator unchanged in the Schrödinger equation?
Accepted answer
1 votes

I found a proof that the momentum operator does not change when the wave it operates upon is not a plane wave: Let $\phi(k) = \frac{1}{2\pi}\int\limits_{-\infty}^{\infty}e^{-ikx}\psi(x)dx$ be the ...

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Removing any obstacles, if I were to make a long plank of wood equal to the Earth's diameter, would it appear curved from space?
1 votes

I think you mean "circumference" not "diameter". The diameter goes through the earth and comes out on the other side, the circumference hugs the exterior of the earth and comes all the way around. 1.:...

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Where does the Born rule come from?
1 votes

For an electromagnetic wave, the Energy is proportional to the Electric/Magnetic Field (i.e. the wave) squared. This is a classical result which can be derived from the Maxwell equations. When ...

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