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Questions tagged [refraction]

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Change in the direction of propagation of a wave when its transmitting medium changes. The tag does also apply to index of refraction.

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Research tells that there could be diamond hail rain in Saturn due to black cloud of soot. So is there any possibility that you could see a rainbow from there? Well, the black cloud of soot and ...
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While walking in the evening, I have noticed strange reddish halo in the clouds around moon : What are root causes of this phenomena? I suppose it's not the same effect when we see reddish sky at the ...
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Could an extremely high velocity particle produce Cherenkov radiation in a near vacuum? e.g. Interplanetary space? What if the particle was Oh my God particle have produced Cherenkov radiation while ...
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Electric fields penetrate all object. However, if there is an electric charge in the path of the electric field, the electric fields overlap and change. However, particle-like photons can be blocked ...
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Earlier, I saw this rainbow out of my window: Sorry for the meagre quality. As you can see, there is a primary rainbow, but directly attached below the primary rainbow, another, fainter and thinner ...
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I am trying to compute the area of the surface intercepted by a light beam sent with infinitesimal solid angle $ω$ towards the interface of a medium of refractive index $n$, after refraction within ...
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The Cauchy formula $$n=A+\frac{B}{\lambda^2}+\cdots$$ is only taught till first 2 (or 3) terms. Why is it so and what are the next few terms?
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If a thin double convex lens of focal length $f$ is cut into two halves along its axis, and the two halves are then rearranged as shown in the figure: Then how can we calculate the net focal length of ...
The's user avatar
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3 votes
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Lets say we have a material with a diffraction index of $n$ moving at a speed $\beta = v/c > 1/n$. Now, light inside of the material moves slower than the material itself until it gets to the ...
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My problem is about rays traveling through a GRIN medium, where the refractive index is maximum at the center and decreases quadratically outward. Intuitively, I would expect rays starting above or ...
Aboubakr Bendahmane's user avatar
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4 votes
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Interested in the average refractive index of interstellar medium (inside the Milky Way and at gamma frequencies would be the best).
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Maxwell's equations in linear homogeneous matter: $$ \begin{eqnarray} \nabla\cdot\mathbf{E}&=&\frac{\rho}{\epsilon},\tag{1}\\ \nabla\times\mathbf{E}&=&-\frac{\partial\mathbf{B}}{\...
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Preface: I do know: Algebra, Basic Calculus, Basic Refraction of light. I do not know: Riemannian geometry (just began to study), Matrices, General Relativity. I enjoy studying physics and math as a ...
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We have studied dispersion of a ray of white light when it goes from denser to rare medium (from air to glass). But when the ray of light comes out on the other side, do the various light rays get ...
TheSilverBullet's user avatar
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The best explanation for light having slower speed in a medium involves the electrons in the medium oscillating in the optical field and the re-emitted radiation having slight phase (time) delay ...
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