Linked Questions

1
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3answers
621 views

Why does the frequency of a wave does not change on reflection and on transmission? [duplicate]

I wanted to know why the frequency of a wave does not change even on reflection or transmission and does it only depends on the source only.
2
votes
1answer
2k views

Why doesn't frequency change? [duplicate]

I've seen a mathematical example where a wave was made from same source in water and air. but in both medium frequency was same but wavelengths were different in each medium. we know that velocity of ...
2
votes
3answers
213 views

Thought experiment about wavelength of light through a medium [duplicate]

Though the physical concepts and mathematics are highly rudimentary, I often try to comprehend exactly why light wants to keep it's frequency, yet alter it's wavelength as it travels through a medium, ...
3
votes
4answers
113 views

Why does frequency remain unchanged in light refraction but wavelength doesn't? [duplicate]

Since the frequency of an electromagnetic wave does not change during refraction but the velocity changes, the wavelength must therefore change. But why doesn't the frequency change in the first place?...
1
vote
2answers
92 views

Why is frequency a fundamental property of waves? [duplicate]

We are taught that although wavelength can change from one medium to other, frequency of a wave doesn't whenever Velocity varies in different media. But why at a deep level, is frequency so ...
0
votes
3answers
52 views

Electromagnetic Waves in a Dielectric [duplicate]

I read that when an EM wave enters a dielectric material, it keeps the same frequency, while its wavelength is reduced, so that their product is a quantity less than c = 3 × 10^8 m/s. Why does it ...
2
votes
3answers
71 views

Why does frequency remain the same when waves travel from one medium to another? [duplicate]

I was reading about reflection and refraction on BBC Bitesize and I can't understand why frequency is a constant in the wave speed equation. I can't visualise the idea of it. I know that wave speed ...
0
votes
1answer
69 views

Confusion regarding light [duplicate]

I have two question about light: When a light wave travels from free space to a medium then there is a change in the amplitude. Why? when a wave changes its medium then its frequency does not change ...
34
votes
3answers
171k views

Why does wavelength change as light enters a different medium?

When light waves enter a medium of higher refractive index than the previous, why is it that: Its wavelength decreases? The frequency of it has to stay the same?
10
votes
3answers
5k views

Does light change color on its way through a window? [duplicate]

Looking at the refractive index of glass, it's around $1.6$. Then the speed of light $x$ through light should be given by $$ 1.6 = \frac{3.0\times10^8}{x}, $$ so $x$ is about $2\times10^8~\mathrm{m}~\...
4
votes
2answers
44k views

Why is the index of refraction different for different wavelengths? [duplicate]

The index of refraction can be written as $$n=\frac{\lambda_v}{\lambda_m}$$ where $\lambda_v$ is the wavelength in a vacuum and $\lambda_m$ is the wavelength in the medium. I’ve been told that since ...
1
vote
2answers
8k views

Light traveling through a medium

Does the frequency of light change when it travels across an interface between two media? What happens to the light wavelength and the light velocity at the interface? I've gotten different answers ...
5
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3answers
2k views

Light wave crossing media and the relationship between speed, wavelength, and frequency

There are many threads on this topic (like this one) but one aspect about the equation $ v = \lambda\nu $ still confuses me. I have read that frequency does not change when light crosses into ...
-1
votes
3answers
83 views

The color of a refracted ray

My textbook explains the cause of the refraction of light as the "difference between the speeds of light when passing from medium 1 to medium 2". The same textbook explains that the cause of the ...
0
votes
0answers
27 views

Electromagnetic waves change in wavelength [duplicate]

Why does the wavelength of electromagnetic wave change in a different medium? what is the physical significance and how can I understand it intuitively? Is there any derivation for this change? I ...