All Questions
5
questions
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434
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Shouldn't it be $d\sin\theta=\frac{\lambda}{2}$ here instead of $d\sin\theta=\lambda$?
Question:
The width of a slit is $4\times 10^{-4}cm$. The wavelength of the light used is $6000 A^{\circ}$. What is the angular distance between the two minima of first order on both sides of the ...
- 1,018
1
vote
1
answer
358
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Number of fringes obtained on interference of light of different wavelengths [closed]
The Question goes as follows:
I am stuck at the part where we obtain general equation for path difference of two interfering lights. Since wavelength of those interfering lights are different, so I ...
- 21
0
votes
1
answer
276
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"Tangential" blue-shift: train with light on side passing parallell to observer
I have the following problem:
"A blue light, emitting at a wavelength $\lambda = 400 (nm)$ in its rest frame, is mounted to the side of a train traveling at a constant speed of $v = 0.6c$ in a ...
- 683
0
votes
1
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How do I find the constants in Cauchys equation for index of refraction for different wavelengths?
Im trying to find the indexes of refraction for my Dispersion of a Glass Prism lab.
Specifically I need to use Cauchy's equation to find the index of refraction for different wavelengths.
$$
n=a+\...
- 57
72
votes
2
answers
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How to measure the wavelength of a laser pointer?
I'm working on something and I need to know the wavelength of the laser pointer that I'm using.
Can you suggest me a way, using some optics formulae, or anything else to calculate the wavelength?
user82920