All Questions
Tagged with refraction visible-light
422
questions
2
votes
2
answers
131
views
Why can't we see green color in the sky? [duplicate]
From sunrise to sunset we can see a variety of colors in the sky.
For example, during morning the most dominant color is blue whereas during sunset orange,red,yellow and there shades are more dominant....
- 517
0
votes
1
answer
42
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What is a convex-concave lens?
I came across this term while studying for optics, and I'm unsure as to what this means. My thinking is that it might be a meniscus lens, but the text separately give two different models for each ...
- 187
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0
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29
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I need to calculate the lateral displacement of light from a glass slab
I think I might have a solution to calculation the lateral displacement of light, however I'd like informed opinion on whether this is right.
We first extend the incident line forwards.
Now, we ...
0
votes
0
answers
30
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Property of total internal reflection question
If I create a medium with gradually decreasing refractive index from once face at index 2.0 and other at 1.01, and show a beam of light upon the optically denser side, will there be any losses upon ...
- 21
0
votes
2
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71
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Is there a way to calculate the angle between the refracted and reflected rays given the refractive index?
Is there a way to calculate the refracted and reflected rays? I know we use Snell's law to calculate the refracted rays, but is there a formula to calculate the angle of the reflected rays, or does it ...
- 187
2
votes
0
answers
35
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Apparent position of object in bowl of water
Say you have a bowl of water and you keep an object in it. What would the apparent position of an object inside the bowl from the position of an outside observer? Will the curvature of the spherical ...
- 187
1
vote
1
answer
86
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Why do highlights occur on edges? [closed]
When looking at an object, the highlights are usually on the corners and edges. Highlights can occur anywhere on an object, but it seems like the brightest parts are where it is the most sharp.
- 21
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0
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29
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Minimum Radius of Curvature an Optical Fiber can be bent
Using the thickness and refractive index of an optical fiber, is it possible to know the maximum radius of curvature it can be bent before there are losses due to refraction?
In my research, I came ...
- 187
1
vote
1
answer
94
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When light passes from one medium to another. Depending on the density, it would experience a change in velocity. Why would its vector change as well?
For example, when light passes through water its velocity decreases and refraction occurs. Why? Why is there a change in direction. If I slow down a car I don’t suddenly turn left.
0
votes
1
answer
50
views
What causes light to scatter in a medium?
My understanding is that all mediums have a complex iindex of refraction where the real component is the "standard" index of refraction, and the imaginary component is the extinction ...
- 203
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votes
0
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32
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General formulea for describing the refractive index at any point within the a black hole's gravitational field approaching the event horizon?
So, say I describe a perfectly linear field expanding outward from a point (A signed distance field of a sphere, basically) (as described by sqrt(x^2 + y^2 + z^2) ...
- 101
15
votes
6
answers
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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
0
votes
1
answer
30
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Broadening of sodium lines by a prism upon change of incidence angle
How angle of incidence affect the lines of sodium when we are observing refracted rays from prism ? Or is it the deviation of rays that makes the lines broader.
Let me put it in a better way , when ...
1
vote
0
answers
28
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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
0
votes
1
answer
25
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Plastic cup filled with water shiny surface [duplicate]
When I hold a plastic transparent cup half filled with water and see it from above then its sides (up to which water is filled )appear shiny. Some of my fingertips (which are holding glass ) are wet ...
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