2 votes
Accepted

Electric field along axis of polarized cylinder

Your first argument makes sense to me, except one point: the surface bound charge density is $P(r)$ on the top and $-P(r)$ at the bottom. Regarding whether the displacement field $\vec{D}$ should be ...
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  • 448
2 votes

This setup works for polarization. Does it work for wavelength?

No. Light is a combination of oscillating electric and magnetic fields. Polarization is an orientation of light. Think of it as a picket fence. Light gets through if the E field is parallel to the ...
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2 votes

This setup works for polarization. Does it work for wavelength?

If you have a $|\uparrow\rangle$ polarizer and a $|\to\rangle$ polarizer. A third polarizer of $45$ degrees in the middle creates superposition of $\frac{1}{\sqrt{2}}|\uparrow\rangle + \frac{1}{\sqrt{...
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  • 165

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