All Questions
Tagged with refraction diffraction
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Is refraction a special case of diffraction according to the book by Charles Kittel?
Wikipedia defines diffraction as -
Diffraction is the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/...
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Can we explain certain light phenomenon like refraction using particle nature of light?
Using Hugyen's principle and wave nature of light, refraction, diffraction are relatively simple to explain but I have been visualing a mental model for a couple of days where the photons on reach the ...
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Explanation for an atmospheric optical phenomenon
Consider the atmospheric optical phenomenon appearing in this video. A screenshot at the appropriate time is shown below:
The video is footage from a drone flying just above a low-lying, thin layer ...
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Refraction and diffraction [closed]
Huygens principle. can we accordingly define refraction to be diffraction from an infinitesimal length slit?
According to Huygens principle, sticking to classical physics terms. as long as slit ...
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Optics question: Simple way to transform a parallel bundle of collimated beamlets into a converging (diverging) bundle of collimated beamlets?
I'm searching for an optical element that converts a parallel bundle of individually collimated beamlets into a converging or diverging bundle of still collimated beamlets (or vice versa). So ...
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Is it possible to measure the temperature of a candle by the diffraction method?
I am reading a book " Physics, Fun and Beyond" by Eduardo de Campos Valadares. In his book, he is mentioning about an experiment "bending laser beams with hot air." I am posting a ...
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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 ...
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Refractive Index of a Aspheric lens
I have the following specifications of an aspheric lens:
AL5040-B - Ø50 mm S-LAH64, f = 40 mm, NA = 0.54, ARC: 650-1050 nm
Is there a way to calculate or identify the refractive index of the lens ...
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What is the smallest value of the incident angle in Bragg's law?
The title of my question basically is what I want to know. In Bragg's law, $nλ = 2 d \sin{\theta}$, if we want to find, let's say, $d$, and know only $\lambda$ and $n$, but not $\theta$, what could be ...
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Why sun rays are parallel not of stars?
I have studied that when a light enters from space into earth atmosphere it experience atmospheric refraction many time due to different atmospheric layer.
Then why we take sun rays parallel?
They ...
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Double slit experiment in water: A simple demonstration of refractive wavelength?
The speed and wavelength of light both reduce in media with high refractive index.
However, it is perhaps not intuitively clear how frequency and wavelength behave in refractive media.
A very simple ...
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Reverse of diffraction
Can we arrange a practical in such a way that the dark and bright bands in diffraction grating be allowed to pass through the same slit to get the original light (i.e the incident light before ...
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How does the Huygens–Fresnel principle apply to diffraction?
I'm currently trying to understand the mechanics behind diffraction and gain a better understanding of the Huygens–Fresnel principle, but I've reached a hurdle that is making me question my ...
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if light source is bigger than the object, it is possible that shadow of the object is bigger than the object?
When sun light falls on my bathe tub i noticed that the shadow of any small particle floating on the water surface is bigger than the particle and also it is quite circular i.e. Deform from It's ...
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Why does dispersion of light behave in the opposite way for diffraction compared to refraction?
When blue light is shined through a diffraction grating it bends less than a longer wavelength, let's say red light. The shorter the wavelength the less it is bent by diffraction. When the same ...
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Making a lense using an array?
Would it be possible to build a lense out of array elements with a higher refractive index inter spaced with void elements eg a matrix of glass with air.
I imagine that the spacing would have to be ...
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Radio wave behaviour in reflection, Refraction and Diffraction
I am trying to understand how radio waves behave when reflected, refracted and diffracted. I have put together a list based on light which I think will be the same. Can anyone tell me the behaviour of ...
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What was the rainbow like object I saw in ice crystals this morning?
This morning, while driving to work, I saw a rainbow-colored pillar formed by ice crystals frozen out of furnace exhaust from chimneys. It was very broad - a bit wider than my (large) hand at arms ...
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Is there a scale at which different wavelengths of light travel at different speeds?
Say you have two resonating plates which are parallel to each other with a gap shorter than a wavelength one is oscillating at with an electric field - wouldn't this act as a plate capacitor without ...
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Pink on LCD screens, how is it possible? [closed]
On the LCD screens a flash makes 2 strips of color, 2 strips of white light, and a rainbow colored strip. This latest has weirdly a pink color in it. How is it possible? The pink color is not part of ...
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How is the Rayleigh criterion connected to the Abbe limit?
I am interrested whether one can derive a formula for the point resolution (like Abbe did) of an optical system from the Rayleigh criterion (without the use of small angle approximation i.e. $\rm{sin}(...
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Diffractive peak for high-frequency scattering from a sphere with small index of refraction?
How does a transparent sphere's shadow fade as $n\to 1$?
Consider radiation of wavenumber $k$ incident on a transparent sphere of radius $a$ and index of refraction $n$ in the limit $ka \gg 1$. (...
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Reflective angles from a CD [closed]
How do I estimate the diffraction angles of laser light which illuminates a CD? Does the storage capacity have an impact?
Theories I have considered are:
refraction
diffraction
$\sin(\theta)=\frac \...
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Why light rays gets scattered when it enters a translucent window pane?
Consider the light source is the light post, outside the window of my house (Pic 1). When the rays from the light post enters through the window pane which is translucent gets scattered and forms a ...
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Difference between thin film interference and Bragg diffraction of electron
Thin film interference is given by:
$2d\sin\theta=n\frac{\lambda}{n_i}$,
where $d$ is the thickness of film, $\theta$ is the angle between incident light and tangent to the surface, $n$ is an integer, ...
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Why is a flower shaped diffraction occluder the best solution for controlling diffraction?
According to this TED talk by Jeremy Kasdin, Nasa is planning to spend $1bn on a "Starshade" project, where a giant flower shaped metal eclipser 20 meters wide is placed 50k kilometers in front of a ...
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Why don't fogbows appear on clouds?
As far as I know clouds are lot of small droplets condensed in air.
If droplets are large enough we see a rainbow. If they are small we see a fogbow.
Although the size of the droplets are big enough ...
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Law of refraction from Scalar Diffraction Theory
I am trying to figure out if Snell's Law for refraction can be derived from Scalar Diffraction Theory.
The setup is this: light (plane wave, with wave vector $\vec k_i = (k_x, k_y, k_z)$ ) falls on ...
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Photons-Wave/particle duality
I know that photons and electrons and such are said to have a wave particle duality, but what does that mean for a photon? When light strikes an object, are many photons emitted, enough to draw ...
user24082
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reflection, refraction and diffraction occur in radio waves, which one occurs the most?
One of the things about Radio waves is that they undergo different behaviors such as reflection, refraction and diffraction when in contact with obstacles such as walls, buildings etc. what i want to ...
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