All Questions
11
questions
0
votes
1
answer
33
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Light acceleration method using inhomogeneous material mediia
Some time ago I posted this question but I reckon it was too vague. Nontheless, I've been working on it and I've come up with some interesting conclusions. My question is: can light be subject to an ...
- 1,616
1
vote
0
answers
26
views
Physical interpretation of a dielectric's absorption curve
A given dielectric will behave as an absorbing medium for some frecuencies (those near one of the material's several resonant frequencies), whilst it will behave as a non-absorbing medium for the rest ...
- 1,616
0
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0
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17
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If a material is homogeneous in $\varepsilon$, can this material be made of different atoms?
I'm currently trying to derive the microscopic expression for the dielectric constant of a material following my proffessor's notes. However, he admits that, even though he assumes $\varepsilon=...
- 1,616
3
votes
5
answers
491
views
Variations in Refractive Index of Materials
It's quite a common fact that different types of glass have different refractive indices. Most sites I've found attribute these differences to variations in the 'density' of the glass, which is not ...
- 1,538
3
votes
3
answers
895
views
Why is wood opaque?
Glass does not allow the flow of electrons through it, is transparent, and has higher skin depth. Similarly, wood has no free electrons and higher skin depth, but still it is opaque. Why?
- 165
0
votes
1
answer
210
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Relationship between extinction coefficient and the imaginary refraction index
I'm trying to add an ITO glass material made by SPI to an FDTD Lumerical simulation. For that I need the real and imaginary parts of the refractive index. In their website though, they give the real ...
- 113
0
votes
1
answer
281
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How does the wavelength of incident light and de-Broglie wavelength of molecules in a medium affect macroscopic properties of the medium?
Say I have a mixture of gases, or a liquid mixture. Now I am supposed to send photons through the mixture to study some macroscopic property of the mixture, e.g. refractive index, bulk modulus, ...
- 4,954
2
votes
3
answers
1k
views
What is so special about calcite that it has double refraction?
In this video is explained how the double refraction occurs. But it explains that if the ordinairy ray is horizontal and the extraordinairy is vertical that the first one gets less delayed than the ...
- 3,348
0
votes
1
answer
3k
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Are silicone polymers transparent to infrared light?
I know that silicon and even black plastic bags are transparent to infrared light. What about light-colored silicone polymers (take white or green colors)? Are they transparent to infrared light too? ...
- 3
2
votes
3
answers
785
views
Electrial Conductivity of Thin Metal Films
What is the best way to find specific/electric conductivity which is dependent of very thin film thickness?
29
votes
4
answers
8k
views
Is one way glass possible?
I am not talking about mirrors, just a plain window made of glass like material. Would it be possible to allow light pass only in one direction but not the other?
- 293