Questions tagged [diffraction]
Diffraction is defined as the bending or flaring of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. This flaring is consistent with the spreading of wavelets in the Huygens construction. Diffraction occurs for waves of all types, not just light.
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Confusion about Derivation for Bragg's Law/Condition
I am currently learning about Bragg's Law and its derivation. However, the assumptions/logic behind the derivation seems flawed to me. It is probably likely that I am incorrectly understanding some of ...
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How to compute the diffraction efficiency of a thin phase grating with arbitrary groove shape?
From Magnusson and Gaylord (1978), the wave amplitudes, $S_i(z)$, of $p$-polarized light for a thin, arbitrary phase grating are given by the equation
$$
\frac{\partial S_i}{\partial z} + \gamma \sum_{...
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Modified two slit diffraction experiment
I thought up a slight modification to the classic two-slit experiment that would be fun to try, but I am certain that I am not the only person to consider it, and would like to know if it has already ...
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Is it possible for a double slit experiment to create an interference pattern at 90 degrees?
If the light diffracts perpendicular to the slits, then would an interference pattern 90 degrees from the slits be observed?
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Bethe diffraction: surface charge density of an ellipsoid
I'm having a hard time following one part of Bethe "Theory of diffraction by small holes" paper, which can be found here: https://web.stanford.edu/class/ee349/Handouts/Bethe_PR1944.pdf
At ...
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Why do gaps in my blinds create multiple lines?
Multiple lines appear on my floor every morning from the gaps in my blinds.
Why does this happen and does it have to do with light being a wave, like in the double slit experiment? If so could it be ...
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How does the diffraction pattern of a 2-dimensional grating/lattice relate to the reciprocal lattice?
I am trying to understand the relationship between the diffraction pattern produced when shining light onto a 2D lattice and the reciprocal lattice of the direct lattice in question.
So suppose we ...
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Fraunhofer temporal far-field condition for dispersive Fourier transform (DFT) technique
I am trying to understand the dispersive Fourier transform (DFT) technique for spectral characterization of pulses. In the literature, I found this far-field condition from Fraunhofer approximation in ...
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How to compare XRD data from literature?
I'm a grad student. Trying to do a literature review this summer. My advisor is telling me to gather XRD data of my samples for my research, and I have. Unfortunately, I have no idea how to compare it/...
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How many distinct phonon branches will I see for 3 atoms in the unit cell, along the [100] direction?
Silicon (Si) crystallises in the fcc cubic structure with two atoms in the primitive unit cell.
How many acoustic and optical phonon branches does it have?
How many distinct branches in the ...
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Pointing flash at LCD television creates a weird diffraction effect
I was looking around my room for something with my phone’s flash on, and noticed a very unique pattern reflecting off of the television.
FYI. The flash is white.
Any idea why it diffracts like that?
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Diffraction of a double slit where the slits are far apart
I'm trying to figure out how I can possibly know the real equation of the intensity of the diffraction pattern of a double slit (I don't care about interference for now). Here are my thoughts:
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Why is the shorter the wavelength, the smaller the object you can image? and vice-versa?
I know that the shorter the wavelength the smaller the object you can image clearly. Why wavelength matters in imaging something? How having big wavelength wont let u image smaller object, like if u ...
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Why diffraction is not happening?
Recently i encountered a problem on the Young's Double Slit Experiment. The question was paragraph and had multiple sub-parts on the different variations of the experiment.
One of them was about what ...
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Why interference is happening with two slits but diffraction is happening with one slit?
why interference is happening with two slits but diffraction is happening with one slit? In the case of interference diffraction also happens but not the other way around? Why so?
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