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1 vote
1 answer
196 views

Ray Optics: Reflection and Refraction

Suppose you have extremely sensitive photographic film and you can expose it in an optical system for a very long time. Will you be able to record a virtual image on film?
Gibo Zamora Soberano's user avatar
1 vote
0 answers
47 views

Refractive index in metamaterials [duplicate]

Why do metamaterials have $n<0$? They are defined to be those materials with $\varepsilon <0$ and $\mu<0$, but the definition of the refractive index is $$n=\sqrt{\frac{\varepsilon\mu}{\...
DrManhattan's user avatar
1 vote
1 answer
738 views

Properties of light and refractive index of materials

Why does the refractive index of a material dependent on the wavelenght of light incident on it.
akash agarwal's user avatar
2 votes
2 answers
973 views

Why is this laser beam being scattered(and not)?

I was shining a laser beam through a liquid filled test tube(an ester particularly),and I found this phenomenon rather intriguing.Have a look. Now when I passed the laser straight through the upper ...
Abhinav's user avatar
  • 1,630
1 vote
1 answer
139 views

What are the physical optical limitations photonic metamaterials can offer?

Modern technology has introduced new photonic metamaterials that can extend optical properties beyond what standard materials can offer. For example a negative index of refraction is now possible ...
docscience's user avatar
  • 11.7k
4 votes
1 answer
10k views

Why does optical media have different refractive indices?

Optical density is a measure of the refracting power of a medium. In other words, the higher the optical density, the more the light will be refracted or slowed down as it moves through the medium. ...
Pertunia's user avatar
2 votes
2 answers
321 views

Temperature-induced wavelength shift of optical coatings?

Optical coatings designed for reflection or anti-reflection are made of many thin layers which will expand when heated. What will the effect be on the wavelengths the coating will reflect when the ...
reftt's user avatar
  • 31

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