All Questions
Tagged with refraction reflection
52
questions with no upvoted or accepted answers
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What causes materials like Vantablack to have their high optical absorption properties?
As per the title of this post. From reading, I understand that blackbody radiation is a factor I should consider here, with light being absorbed and converted to heat etc.
However, what I want to ...
4
votes
1
answer
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Under water light reflection of air in a cup vs water in a cup
The last time I was on vacation I was drinking on the swimming pool, and after I was finished with the drinks I started playing with the 2 plastic cups I had, and noticed that the air produces a ...
- 141
4
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1
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251
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How does a broadband dielectric Mirror work?
It is widely known that dielectric mirrors work with several layers of at least two materials which differ in refractive index that are layered, such that partially reflected waves interfere ...
- 139
2
votes
0
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85
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What are the Fresnel formulas for acoustics?
While it's not too difficult to derive Snell's Law for acoustics e.g. from Huygen's principle like for light, I find surprisingly little resources on an equivalent to Fresnel formulas linking the ...
- 6,820
2
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65
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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
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2
answers
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How does a non-infinite monochromatic plane ray of light know which way to refract?
I have been making a simulation of light traveling in medium from classical physics perspective and while trying to makes sence of a traveling wave packet i realized i don't understand something very ...
- 91
2
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0
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774
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What happens when light is reflected from a surface moving in a medium with a huge refractive index?
Imagine a mirror is moving away from a light source in a substance through which the speed of light is very slow -- so slow that the speed of the mirror is close to being the same as the speed of the ...
- 163
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Modeling a spray painted polyurethane surface reflection
I'm modeling light interaction/reflection from a fiberglass surface with polyurethane epoxy (that is very reflective) that has been spray painted with a matte black paint. I'm looking for some input -...
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31
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Fresnel Equations and an Opaque Surface?
I'm trying to make sense of what actually happens to light when it interacts with an opaque surface.
The fresnel equations give us the proportion of light which is reflected off the surface of a ...
- 203
1
vote
1
answer
113
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Why is deep open ocean blue?
If we assume the ocean is sufficiently deep so that the blue light transmitted inside the water gets absorbed completely before it reaches the ocean floor and be scattered back towards the surface, ...
1
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0
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65
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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
1
vote
2
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Can the colors of white light be separated through reflection alone?
Can the colors of white light be separated through reflection alone? My answer to this is no since if we want to separate the colors, we use prism and when light passes through a prism, the dispersion ...
- 11
1
vote
2
answers
70
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Why is the number of light rays refracted from a transparent media more than the number of reflected rays?
I came across a question related to the multiple image formation from a thick mirror due to partial refraction and reflection. It was asked that which image would be the most intense? In the solution ...
- 35
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273
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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
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Omnidirectional refraction of a ray light
Is there such a material or construction of refractors or reflectors such that a ray or rays of light entering into the medium are redirected so as to exit the medium in a nearly all directions? For ...
