All Questions
16
questions
1
vote
2
answers
72
views
Why total reflection happens at only 1 angle?
The critical angle can be intuitively understood by Snell's law.If the incident medium has a bigger diffraction index than the refracted medium then according to Snell's law the refracted ray will be ...
- 101
1
vote
0
answers
65
views
What are the physics behinde reflection and refraction of electromagnetic wave at a dialectric surface?
I have understood the most of the equations that lead to the Fresnel-Equations from electromagnetic waves and Maxwell equations. But not enough to understand what is happening. So I don't ask for an ...
- 11
2
votes
1
answer
65
views
Analysis of the reflection in metal
In order to solve the reflexion in a material with a complex index the solution I've found on textbooks is to define $\hat{n}\cos{\phi}:=a+bi$ where $\hat{n}=n_r+n_ii$ is the complex index and then ...
- 225
1
vote
1
answer
123
views
Why it is necessary that phase of incident, reflected and refracted wave must equal at the interface of two medium?
1.Why it is necessary that phase of incident, reflected and refracted wave must equal at the interface of two medium to satisfy the boundary conditions at the interface?
2. According to boundary ...
0
votes
1
answer
628
views
Derivation of Snell's Law
I am following an example in the book "Electromagnetic Waves and Antennas" by S. Orfanidis. He has two planes waves incident on both sides of a boundary. Here, $k_{\pm} = \hat{x} k_{x \pm} + ...
- 284
1
vote
0
answers
273
views
Effective Refractive Index in Paper
I am reading the paper, entitled "Artificial uniaxial and biaxial dielectrics with use
of two-dimensional subwavelength binary gratings" by Eric B. Grann, M. G. Moharam, and Drew A. Pommet. https://...
- 829
0
votes
1
answer
160
views
Reflection and transmission of EM waves
I'm reading "Introduction to Electrodynamics" by David J. Girffiths and the following assumption is confusing me:
We have an EM wave inciding on a surface,
Then, when applying the boundary ...
- 115
1
vote
0
answers
64
views
EM Theory applied to reflection&refraction
I am going through a book "Optics" by E. Hecht, and, since I already do not remember some EM theory concepts, I am having troubles understanding the following paragraph:
The laws of Electromagnetic ...
- 143
11
votes
4
answers
2k
views
How can reflection and refraction be explained classically and microscopically?
I was trying to explain something about Brewster's angle and realized I don't completely understand how reflection and refraction work on the microscopic, classical level.
Consider a plane polarized ...
- 103k
1
vote
1
answer
1k
views
Why does light take the path taking the least time?
I know this question has been asked many time but my question is bit different here. What i mean by the above question is that I recently got to learn that light actually does not exclusively take the ...
- 823
-1
votes
1
answer
1k
views
Are images formed due to reflection or refraction and what do we see? HOW?
I am getting extremely confused about what we see as individuals : do we see reflected rays or refracted rays and what does our brain interpret?
The concept has bewildered me for a long time. Googling ...
user116688
2
votes
1
answer
566
views
What is the physical explanation of Fresnel's equation?
When EM radiation is travelling between the media of different refractive indices, parts of it are reflected and transmitted according to Fresnel's equations. The amount of reflectivity and ...
- 183
1
vote
1
answer
944
views
How does one show specific thickness and wavelength determine full transmission of electromagnetic waves?
How does one show that thickness and wavelength determine the full transmission between two different dielectric media if the boundary condition equations between two dielectric media are independent ...
- 2,107
0
votes
3
answers
3k
views
Reflection coefficient as a function of frequency
I am trying to relate the equation for reflection coefficient in oblique mediums to the frequency but can't figure out how the frequency affects the reflection of light.
$n_1$= intrinsic impedance of ...
sam
3
votes
1
answer
450
views
Reflection from multiple thin films: accounting for lost light due to small surface area
I have a problem similar to reflection of multiple thin films. I have light coming in from medium 1 and I want to find the total reflected intensity after being reflected inside 2 layers. However, I ...
- 502