All Questions
11
questions
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Multi-slit interference [closed]
In an article related to multi-slits interference, the displacements of oscillating waves originating from different slits that meet each other in the detector are written as follows:
According to ...
- 13
3
votes
2
answers
804
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Why there is always a bright fringe at angle zero in light's double-slit experiment?
The explanation I read is that because at $\theta = 0$ the waves travel the same distance from both slits to A and thus have no phase difference. They add up constructively so there must be a bright ...
- 250
3
votes
3
answers
228
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Strange Interference under monochromatic light
I'm coming to you with a strange physical/optical phenomenon I noticed today for which I'm looking for an explanation. I can't seem to find references to this, and it was pretty surprising to see for ...
- 131
0
votes
3
answers
126
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Regarding Michelson's interferometer
In Michelson's Interferometer (1881 experiment), even though the arm length for both the perpendicular arms was taken as the same (say $L$) and a compensatory plate was used to removed optical path ...
0
votes
0
answers
169
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Interference pattern from a diffraction on a opaque disk vs circular aperture
I have been reading up on diffraction theory and found out about Babinet's principle which states that the wave resulting from a diffraction on an aperature is the same wave resulting from a ...
- 75
9
votes
4
answers
520
views
Mathematics supporting the classical explanation of why the phase speed of light slows down in a medium
Consider the answer here by Chad Orzel which explains how a monochromatic light can slow down in a medium. He explains,
You can think each of the atoms (of the medium) as being like a little dipole,...
- 26.8k
0
votes
1
answer
43
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Distorsion in Photoluminescence
I am studying photoluminescence, but I do not understand why during measurement it turns out that the signal is distorted due to appearance of a long-wavelength replica of the fundamental laser ...
- 31
1
vote
1
answer
1k
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Path difference between rays in Michelson interferometer with inclined mirrors
If mirrors of Michelson interferometer are inclined the resulting configuration is the one in picture (tha analogy is with the thin wedge) where ray appear to come from $O$. If the distance between ...
- 2,617
0
votes
0
answers
52
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How do I visualize the 'phases' of these two waves in this example?
Fig 4.1 shows a displacement-distance graph for two electromagnetic waves A and B of the same frequency and amplitude. Wave A is travelling to the right and wave B is travelling to the left.
The ...
- 254
2
votes
2
answers
85
views
Introducing a phase, what changes?
This question is related to: Mach-Zehnder interferometer and the Fresnel-Arago laws
Let us say we have unpolarised wave taking the form:
$$\psi=\psi_0 e^{i(kx-\omega t)+i\phi(t)}$$
Where $\phi$ ...
5
votes
1
answer
631
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Interference and windows
The other day i was learning about interference patterns with the effect of a bubble making a rainbow on the surface. I learned that the reflections from both sides of the soap can interfere ...
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