All Questions
39
questions
1
vote
2
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66
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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 ...
- 95.6k
0
votes
1
answer
54
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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:
...
- 1
-1
votes
1
answer
80
views
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 ...
- 241
0
votes
0
answers
25
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Why in the experiment of double slits, in case of radiation of wavelength of red light, we can observe an envelop of the minimum?
I have made an experiment in which i have to measure the intensity of the light generated by an $\text{He-Ne}$ laser, in the case of two slits, I pretend to observe an interference lattice.
I have to ...
0
votes
1
answer
24
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Calculating net phase in single slit diffraction
I want to calculate the net phase at a point on the screen in Fresnel diffraction. Attached below is a rough diagram if needed.
For this I considered hypothetical $n+1 $ small slits acting as sources ...
- 29
0
votes
1
answer
100
views
Double slit diffraction integral?
In our physics class, the professor went over a so-called "diffraction integral" for single slit diffraction:
$$E = E_0\cos(kx - kct)\qquad\text{then we ignore time dependence}:$$
$$E = E_0\...
- 187
0
votes
0
answers
119
views
Minimum intensity fringes are not perfectly dark in diffraction pattern?
I am studying Interference and Diffraction and everywhere I look it is written that "In an interference pattern,the minima are usually perfectly dark while in a diffraction pattern they are not ...
0
votes
0
answers
96
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Diffence between the double slit experiment, single slit diffraction vs the hair strand diffraction experiment
We know that in the double slit experiment the BRIGHT spots are created for path difference of $n\lambda$.However the condition is reversed in the case of diffraction. Here we see BRIGHT spots when ...
- 123
0
votes
1
answer
862
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In single slit diffraction, why does the minima occur at integer multiples of lambda, which is contrary to double slit?
Single slit diffraction is also a kind of interference, so why does the minima do not occur at a path difference with half the wavelength, but occur at integer multiples? In my lecture notes, it says ...
- 73
3
votes
3
answers
310
views
If $I$ is the intensity of the principal maximum in the single slit diffraction pattern, then what will be its intensity if the slit width is doubled?
I've found a few results on the internet for this question, all with different explanations or different answers. Some say it'll become 4I and some that it'll not change. I see that there are a few ...
1
vote
1
answer
112
views
Diffraction of a laser composed of 2 monochromatic colours through a single slit / $N$ slits
To make the example simple, let's say we have a yellow laser that is the combination of 2 monochromatic lasers (green + red). In the example I will give, let's consider that the slits are narrow ...
- 197
1
vote
0
answers
222
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Double-slit interference pattern from double-slit diffraction pattern in the limit of zero slit-width
The intensity pattern of the double-slit experiment should change from the double-slit diffraction pattern $$I=4I_0{\rm sinc}^2\left(\frac{\pi b\sin\theta}{\lambda}\right)\cos^2\left(\frac{\pi(b+d)\...
- 11.7k
1
vote
1
answer
51
views
Is it possible to find out coordinates of slits by interference image?
Is it possible to find out coordinates of slits by interference image?
Actually I have several questions. Assume my friend gave me a stripe which shows interference picture of light (like in a ...
0
votes
1
answer
442
views
DIY Experiment fiasco: Single slit laser pointer already showing interference pattern
I tried to run the double slit experiment at home for my kid with a cheap red laser pointer. I partially covered the laser with four pieces of electrical tape to make a tiny square hole. To my ...
- 103
-1
votes
1
answer
124
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What happens to vertical light in light diffraction experiments?
In single slit experiment, light tends to bunch up vertically the more it spreads out horizontally. Why does this happen?
- 1