All Questions
Tagged with optics wavelength
149
questions
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Physical problem with Fourier transformation by diffraction at a slit?
It is well known (and observed experimentally every time) that after passing through a slit the light doesn't change its wavelength. From the other side it is also well known that when the light ...
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2
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What is the wavelength of white light? [closed]
Does white light have a wavelength, and I know that the sun emits white light, but the atmosphere makes it refract to make it appear yellow to us. Do all the stars in the universe emit white light?
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Will there be any diffraction if the gap width is smaller than the wavelength?
As the diffraction will be the largest when the wavelength is equal to the gap width, I wondered if there would be any diffraction if the gap width is smaller than the wavelength, and If there is, why ...
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3
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When is diffraction most pronounced?
My notes says the following things about diffraction:
The larger the ratio of wavelength to slit (or object) width, the more pronounced the diffraction is and the more spread out the wave energy is. ...
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What wavelengths of light does a banana reflect?
I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) ...
- 723
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Zero-dispersion wavelength
Please help me understanding the zero-dispersion wavelength in fibers.
I found this wiki-article on the topic. Accordingly:
"In a single-mode optical fiber, the zero-dispersion wavelength is the ...
- 113
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What is the difference between $v=fλ$ and maximum velocity in the formula $v=ωY_{\max}$? [closed]
I was wondering what the difference is between speed in the formula $v=fλ$ and maximum velocity in the formula $v=ωY_{\max}$ as applied to a wave.
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Does reflection depend on wavelength?
I'm aware of processes like Rayleigh scattering, Compton scattering and pair production. But as these processes treat light as being particles(?) I'm not sure whether they are helpful to understand ...
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Experimental suggestions for size and shape of single optical photon (wavepacket)?
Optical photon is an electromagnetic wave produced e.g. during deexcitation of an atom, carrying energy, momentum and angular momentum difference.
So how is this electromagnetic energy distributed in ...
- 960
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2
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Sunlight colour
I know the sunlight is white colour and appears yellow because of dispersion through atmosphere.
I want to know why this yellow light when pass through prism divided into 7 colours.
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What is the wavelength of a signal with a continuously increasing frequency?
What is the wavelength of a signal continuously decreasing in power (and seemingly decreasing in wavelength)?
This question comes as a consequence of trying to find the correct value for the ...
- 753
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507
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Wavelength of light in a waveguide
I've done a derivation showing that the wave length of light in a waveguide is longer than that of free space light. But I don't really have an intuitive understanding of why this is. I think my prof ...
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How were the RGB Color Matching Functions established from 380 to 436 nm?
I have been reviewing how RGB color matching functions were formed, and I seem to be missing an aspect. The three primary monochrome lights used to generate a color like the target color are roughly ...
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What is the spacing between interference fringes?
In this problem, we are trying to determine the spacing between interference fringes for a setup of two optically flat glass plates with a small wedge of air between them.
I am attaching a screenshot ...
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Must the distance between the reflectors of a coherent laser be a multitude of its intended wavelength?
Must the distance (aka cavity length $L$) between the two reflective mirrors of a spatial and temporal coherent laser be a multitude of the lasers intended wavelength?
If no, why not?
If yes, how does ...
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