All Questions
Tagged with frequency visible-light
144
questions
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Why does the energy (and thus frequency) of a photon entering glass stay constant if some is used up to accelerate electrons and slow down the light?
I'm learning optics and have been told that when light enters a medium (e.g. glass) and slows down the frequency of the light stays constant while it is the wavelength which is reduced. The ...
- 531
1
vote
1
answer
45
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Why do we see objects with a given color?
I'm currently studying Electromagnetic Optics, and I don't quite understand the (classical) process through which we perceive an object with a given color. From my understanding, I'd make a ...
- 1,616
15
votes
6
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Why color depends on frequency and not on wavelength? [duplicate]
To explain my question lets consider this example:
The wavelength of light in a medium is $\lambda=\lambda_{0}/\mu$, where $\lambda_{0}$ is the wavelength in vacuum. A beam of red light ($\lambda_{0}=...
- 2,517
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Let's say I have manufactured a prism from a non-dispersive medium, then light coming from air wouldn't split into colours right?
Let's say I have manufactured a prism from a non-dispersive medium, then light coming from air incident on the prism wouldn't split into colours, right? I mean light still changes direction, but all ...
- 959
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71
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Does our sense of color depend on frequency of source or the wavelength of light?
I was taught that the colors we see are results of the corresponding wavelength, but each wavelength also has a distinct frequency since speed of light is fixed for a specific medium (same goes for ...
- 169
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83
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Does two same light bulbs produce light of same frequency? [duplicate]
If they do, then why don't we observe interference in normal rooms? And if they don't have the same frequency then why is that so?
0
votes
2
answers
99
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What is the colour of an atom? [closed]
We know that when an electron jumps from shell to shell it produces light waves which produce the sensation of vision to our eyes. But can anything be said about the colour of an atom in particular. ...
- 85
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45
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Does Color change happen under a prism? [duplicate]
I was watching this video.
It Showed that light ( green ) changes its color to red after incidence of light. I couldn't think of how this happens because light's color is dependent on frequency rather ...
- 441
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1
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How do i calculate change of momentum when I send a photon in the direction of travel
Say a spaceship is traveling at a certain velocity v (>>c) and it emits light from the nose of my spaceship in the direction of travel. The speed of light is finite and hence there should be a ...
- 383
1
vote
2
answers
210
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Snell's law and what determines color of light
White light is dispersed by a prism into the colors of the visible spectrum with wavelengths ranging from violet 380 to red 750 nanometers. By Snell’s law, the refractive index $n_{21}=n_2/n_1=sinθ_1/...
- 191
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2
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166
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Is the intensity of a light wave related to frequency of the wave?
My problem is: How can I resolve these following ideas?
Energy of photons in an EM wave is proportional to the frequency of the wave
Intensity of an EM wave is proportional to the energy that is ...
- 15
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40
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Would slowing down a beam of light change its wavelength and frequency?
I confess that I have little knowledge of physics, so this kind of thing really often goes over my head. However, I did read somewhere that the speed of a beam of light is the product of its ...
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41
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Change of light from not visible to visible
Can light from infrared or UV change to visible light when it passes through some other material?
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1
answer
132
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Does colour of light depend on intensity of light? [closed]
By intensity I mean frequency of light
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How is it possible that the wavelength of a wave can change but the frequency remains the same? [duplicate]
When let's say a beam of light passes through a transparent glass surface, how is the wave able to maintain the same frequency but the wavelength changes ?
