1k 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.
273 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?...
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 ...
320 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 ...
215 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, ...
190 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 ...
115 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 ...
73 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 ...
177k 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?