All Questions
5
questions
3
votes
1
answer
90
views
Reflection coefficient: Acoustics vs Mechanics
I recently tried to derive the reflection coefficient $R$. This is not a complicated task, however after making some literature research I found two derivations which arrive at seemingly different ...
- 469
4
votes
3
answers
292
views
Lossless beam splitter relations
Wikipedia says that for a beam splitter $$\begin{bmatrix}E_{c}\\
E_{d}
\end{bmatrix}=\begin{bmatrix}r_{ac} & t_{bc}\\
t_{ad} & r_{bd}
\end{bmatrix}\begin{bmatrix}E_{a}\\
E_{b}
\end{bmatrix}$$ ...
- 1,038
0
votes
0
answers
56
views
Are there any videos of diffraction grading experiments one photon at a time?
I have seen the video of a double slit one photon at a time but wondering if there is a video of a Diffraction grading experiment one photon at a time.
- 4,083
0
votes
1
answer
66
views
Does the minimum slit width change with different photon frequencies?
Send white light through a vertical polarizer and then through a second horizontal gap that is just wide enough to let all the light through. Now slowly close the second gap until it becomes a slit. ...
- 4,083
1
vote
1
answer
111
views
Is there any meaning behind this $E=mc^2$ "proof"? [closed]
The action $\mathcal{S}$ for a conservative system can be written: $\mathcal{S}=\mathcal{S_o}-Ht$ (because $\frac{\partial \mathcal{S}}{\partial t}=-H$). We also know that: $\frac{\partial \mathcal{S}}...
- 1,168