All Questions
Tagged with refraction visible-light
422
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Snell's law and what determines color of light
White light is dispersed by a prism into the colors of the visible spectrum with wavelengths ranging from violet 380 to red 750 nanometers. By Snell’s law, the refractive index $n_{21}=n_2/n_1=sinθ_1/...
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Why does light always make a rainbow on the surface of a bubble?
When light is refracted through little drops of water the rainbow is formed behind the water molecules.
When light is refracted through a glass prism the rainbow is formed inside the prism.
Then why ...
- 402
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2
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Unexpected rainbow in window
Lately, I observed a rainbow-like ring forming in my window during nighttime when the light enters from a street lamp. Interestingly, the sequence of colors in the rainbow seems to be reversed from ...
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Does the angle of refraction depend on an observer?
According to Fermat's principle, light should take the least time between two points. Therefore, is it correct to say that the angle of refraction is solely dependent on the difference between speed ...
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Focus sunlight into a line and not just a point with lenses
Using a magnifying lens with the sun as the source, one can focus the light in a single point.
Is it possible to use just lenses, or any number of transparent materials of any particular shapes, to ...
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Is it possible to have single-sided refraction?
Is it possible to have light refract in one direction, then reflect off a mirror but come back as a straight line like the picture below?
The context of this problem is in lens optics when a ...
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Can a mote of dust create a rainbow/prism like effect if floating inside the light of a sunbeam and seen from the right angle and/or device?
The device could be a telescope, microscope, camera, or anything that zooms in with great clarity. I'm pretty sure that lots of dust together in one place in a sunbeam can have this effect (please ...
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398
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Deriving the focal length of a graded index lens (GRIN)
I want to find a closed expression of the focal length of a graded index since I don't manage to find any on the internet. I already checked this out: Determining the focal length of a gradient index ...
- 344
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Light in glass/water
When light enters water, the light changes their direction because they only use 75% of their speed in water, because the interactions with the electrons, the wavelength of the photon changes. We SEE ...
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3
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Can prism separate different colour of light?
Can prism separate colours of light?
For example, I have a purple colour. purple colour is by mixing of red and blue.
I that possible when purple colour light is passed through a prism it separate the ...
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Refractive index of air for different wavelangthes
When I tried to search about the refractive index of air, I found 1.00029. This is for which wavelength? How can I find refractive index of it for different wavelengthes like red light's wavelength ot ...
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Is it possible to see real images without a screen?
I have always wondered about this question, so searched it up on the internet and there were contrasting ideas.Some said that it can be seen but the others said it can't.
According to me we are able ...
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What's at the end of a rainbow?
I recently saw a video where someone saw the end of a rainbow as it went into a lake. How is this even possible considering the fact that rainbows have no ends and are circular in nature?
Edit: I ...
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Refraction of a Ray of Light [duplicate]
Why can no medium have a refractive index less than 1? Explain with Snell's Laws of Refraction of Light.
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Why does a light wave travel at a different speed when the density of medium is different [duplicate]
Why does light waves travel at different speeds when the density of medium changes? Can you slow down light?
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