All Questions
64
questions
0
votes
0
answers
25
views
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
2
answers
135
views
Why diffraction works at sharp edges?
While introducing Diffraction, physics textbooks say that this effect (Diffraction) is observed distinctively when the light is passed through a very small opening, the length or diameter of which is ...
- 2,517
-2
votes
1
answer
37
views
Struggling with interference [duplicate]
I was reading the book optics by zajac and hecht. It was a nice one until physics optics, i got that interference becomes when the light is coherent and monochromatic, and it is the superposition of ...
0
votes
1
answer
83
views
How to explain interference pattern in our eye?
Suppose we got a Lamp L that emits some light. The light afterwards hits a diffraction Grating G at a distance a. Now if you were to look through the grating with your Eye E, you were to see the ...
- 462
0
votes
1
answer
83
views
Does two same light bulbs produce light of same frequency? [duplicate]
If they do, then why don't we observe interference in normal rooms? And if they don't have the same frequency then why is that so?
1
vote
1
answer
344
views
Can mirrors reflect destructive lasers or do they absorb the energy and would get destroyed themselves?
There is much talk of using lasers to bring down drones. That talk is followed by talk of protecting the drones by surfacing them with mirrors.
Would that work or does light falling on a mirror ...
- 131
0
votes
1
answer
37
views
Propagation of two non-parallel waves
When a transverse wave is described by the equation, $y=A\sin(kx-\omega t)$,it is immediately meant that the direction of propagation is the $x$ axis with $y$ axis as the displacement. And we know ...
- 1,179
1
vote
3
answers
208
views
What is the reason two rays originally polarized orthogonally but were rotated to parallel polarization does not visibly interfere even slightly?
The Fresnel–Arago laws by Augustin-Jean Fresnel and François Arago summarise some of the more important properties of interference between light of different states of polarization.
The laws are as ...
- 613
1
vote
1
answer
130
views
Light wave interference on thin film
Let a point P exist just above the surface of a glass slab of thickness $L$.
Light is incident vertically on this slab. The light at point P, at some instant has phase angle $\phi$.
The refracted ...
- 128
0
votes
1
answer
81
views
Opera glasses and interference of light
One sunny day my kids asked me about the light circle (see photo below) they noticed on a small wooden bench in a dark room with no windows (there are just doors to other rooms and kids usually sit on ...
16
votes
6
answers
3k
views
Is interference of light a quantum phenomenon?
I am wondering whether the light interference is a quantum phenomenon. Or, alternatively, is there any interference in Maxwell's theory understood as a classical field theory?
The reason I am puzzled ...
- 705
0
votes
1
answer
109
views
What is the equation that gives $a$ and $b$ of the elliptical polarization formed by two interfering linearly polarized waves?
Two linearly polarized light waves have amplitudes $A1$ and $A2$, the same wavelength, a phase difference of $p$, and an angle difference of $\theta$.
When two linearly polarized light waves with ...
- 103
0
votes
1
answer
132
views
Confusion about Huygens Principle
According to Huygens Principle, the direction of propagation of waves will be perpendicular to the wavefronts. But I have Confusion in Fraunhofer's Diffraction due to Single Slit. Have a look in the ...
- 121
-1
votes
2
answers
572
views
Which is the real reason for why we don't see light interference patterns?
There are many questions like mine in the web, but think I cannot fully understand it.
Let's look at this question. The first answer states that we cannot see light interference patterns because most ...
- 1,319
0
votes
1
answer
1k
views
Thin Film Interference - longest wavelength of the light in water that is transmitted most easily [closed]
The problem:
A scientist notices that an oil slick floating on water when viewed
from above has many different colors reflecting off the surface,
making it look rainbow-like. She aims a spectrometer ...
- 141