Tagged Questions
0
votes
0answers
59 views
Are EM waves scattered the most when the wavelength and the obstacle have a similar size?
I heard that when the wavelength and obstacle are similar in size, the scattering is the greatest. Is this true?
1
vote
0answers
108 views
How does a Fresnel rhomb work (half and quarter wave plate)?
How does a Fresnel rhomb work (half and quarter wave plate)?
I am aware of birefringence, which creates a phase shift of $\Delta\phi=\dfrac{2\pi\Delta nL}{\lambda_0}$. But this doesn't explain how a ...
0
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2answers
131 views
Wavelength comparison of two waves
Is there any non-digital (naturally existing) mechanism to compare two or more waves in such a way:
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1
vote
1answer
288 views
Laser Coherence Length/Time
Scenario:
Imagine a collimated beam of white light falling on one refracting face of a prism. Let the light emerging from the second face be focused by a lens onto a screen. Suppose there is linear ...
0
votes
0answers
61 views
Ultrashort Optical Pulses [closed]
If an ultrashort optical pulse has a complex wavefunction with central frequency corresponding to a certain wavelength and a Gaussian envelope of RMS width of a certain time period, how can I ...
7
votes
3answers
288 views
Why do rainbows have distinct colors?
When I searched on the Internet for the reason of formation of rainbows, I got many explanations like this one & this. All the explanations consider only one spherical water droplet (like this ...
1
vote
1answer
636 views
Find the dispersion of the slab?
I've been having trouble with this for a few days and already used up all my tries on the homework for it, but have the final is coming next week. Thus I would like to know how do this, however I ...
2
votes
0answers
62 views
Optics: finding total power of a syste, including wavelength
Specifically I need to create an ABCD matrix given 2 radii of curvatures, the thickness of the lens, type of glass (BK7) and a given wavelength. I will have to figure this out eventually, so help ...
0
votes
1answer
127 views
Merge different wavelength rays
Let's say an array of rays of light is given.
Each ray has a specific wavelength (in the range of visible light).
Example:
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