Tagged Questions
0
votes
0answers
25 views
Interference of 2 slit experiment when glass is put infront of 1 slit (+0.5 lambda optical path)
The question and answer is given in the image below:
I don't really understand how to work this out myself. How do I relate $+\frac{1}{2} \lambda$ to (phase difference) $\Delta\Phi = \pi$
UPDATE
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6
votes
2answers
274 views
Where does energy go in destructive interference? [duplicate]
I have read that when two light waves interfere destructively, the energy contained within is transferred to other parts of the wave which have interfered constructively. However, I am having some ...
1
vote
1answer
105 views
Kiessig fringes
I have come across many papers but still couldn't find the relationship between index of refraction or atomic scattering factors, and reflectivity.
My flow of thought goes as follows:
Get the ...
5
votes
1answer
171 views
Are two polarization states of light coherent?
Let's consider a situation: we have distant point source of unpolarized light in certain non-zero range of wavelengths (it's polychromatic). Let's divide this light into 2 beams depending on ...
0
votes
0answers
51 views
on interference [closed]
A laser is oscillating at two frequencies v1 and v2 such that v2-v1=c/2l where resonator length. If the laser is used in an interference experiment,what is the minimum path difference between ...
8
votes
6answers
1k views
How come an anti-reflective coating makes glass *more* transparent?
The book I'm reading about optics says that an anti-reflective film applied on glass* makes the glass more transparent, because the air→film and film→glass reflected waves (originated from a paraxial ...
5
votes
3answers
871 views
Why don't waves with different wavelengths interfere with each other in white-light?
The book I'm reading about optics says at some point that "each color (wavelength) contained in the white light interferes only with itself". But why is this so?
Edit: I moved the rest of the ...
2
votes
3answers
484 views
Recently publicized experiment on destructive interference between two laser beams
Recently I've had several non-physicist friends ask me, independently of each other, about an experiment where two collinear laser beams destructively interfere along a certain length. Everybody wants ...
1
vote
2answers
226 views
Double slit experiment and perforated walls' properties
I have a doubt about how double slit experiment is made.
Let's think about the perforated wall, what are the requirement for it?
Can a photographic plate could be used as a wall ?
I see a problem ...
1
vote
2answers
274 views
What's inside the slit in double slit experiment?
If double slit experiment is done in a environment with air, then slits could also contain air made up of (approx. 80% nitrogen, 20% oxygen), then there is not empty space inside the slit. How can it ...
1
vote
5answers
3k views
13
votes
3answers
1k views
Newton's rings: What causes the other rings?
This is from an experiment we did in physics class. We shone a sodium light at a convex lens on top of a sheet of glass - and this image was captured by a USB microscope. I know what causes the main ...
