All Questions
8
questions
15
votes
6
answers
7k
views
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
6
votes
3
answers
743
views
When designing antennas which speed of light should be used?
When calculating "antenna element length" should we use the speed of light in the "medium between transmitter and receiver (antenna)" or the speed of light in the "element ...
- 613
1
vote
0
answers
21
views
Why does frequent remain constant in refraction? [duplicate]
So at school the told us that:
V= f x λ
In refraction we were told that direction,speed and wavelength changes when a wave crosses different mediums, and on another occasion that frequency is the ...
- 11
1
vote
1
answer
613
views
Why violet light bends the most? [duplicate]
I have read about refraction through a triangular prism,rainbow formation and other natural phenomena.They all told about the strong bending of violet light .
I know that it has a shorter wavelength ...
1
vote
2
answers
451
views
Contradiction on the behavior of refractive index
The refractive index is given by:
$$ n = \sqrt{\mu_r \epsilon_r} $$
This equation is symmetric about wavelength and is same for all wavelength of light i.e. since $\mu_r$ and $\epsilon_r$ are ...
- 39
0
votes
2
answers
3k
views
Refractive index variation with wavelength of light
In my book it is written that
$$\text{refractive index} = c/v =\sqrt{\text{permeability} \times \text{permittivity}}$$
The dielectric constant medium is dependent on the frequency of the field. For ...
- 103
41
votes
4
answers
191k
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?
- 4,607
4
votes
2
answers
6k
views
Wavelength-dependent refractive index
I read in a book about optical fibers that the different spectral components of a light pulse transmitted in the fiber propagate with different velocities due to a
wavelength dependent refractive ...
- 237