All Questions
Tagged with refraction diffraction
30
questions
0
votes
2
answers
66
views
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/...
1
vote
0
answers
44
views
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 ...
- 113
0
votes
1
answer
39
views
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 ...
- 2,695
1
vote
0
answers
58
views
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 ...
- 136
0
votes
0
answers
126
views
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 ...
- 181
2
votes
0
answers
47
views
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 ...
- 221
1
vote
2
answers
177
views
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 ...
- 11
0
votes
0
answers
151
views
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 ...
0
votes
2
answers
632
views
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 ...
- 43
-1
votes
1
answer
219
views
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 ...
1
vote
1
answer
228
views
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 ...
- 182
16
votes
4
answers
3k
views
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 ...
9
votes
4
answers
3k
views
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 ...
- 333
2
votes
1
answer
878
views
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 ...
- 23
1
vote
1
answer
1k
views
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 ...
- 4,711