# Tag Info

### Use of sign convention two times in ray optics

Formula $(3)$ works for the situation shown above. If $O$ is brought closer to the lens then the ray $NI$ diverges away from the principal axis and when back produced intersect the principal axis to ...
1 vote

### Odd order of colour fringes around cloud

That resembles Goethe's dark spectrum: yellow-magenta-cyan. These are the main colours you see when a narrow shadow is viewed through a prism.
1 vote

### Relativistic Effects on Electromagnetic Wave Propagation

My question is, since the wave is propagating at 23 the speed of light, shouldn't length contraction play a role in some way? Why was I able to get such an accurate result despite not accounting for ...

### Why does the ray bend only in one direction?

I think others have misunderstood your question, however it's an interesting one ! You are asking, why the refracted ray does not bend towards the same side of normal as of incident ray. Let's see, ...
1 vote

### How to increase the angle of light (without going from a higher to lower index of refraction)?

Although JQK gave a good answer, this post is more of a comment rather than an answer, but it would not fit as a comment, so I post it as an answer instead. Firstly I would like to ask: what is your ...
1 vote

### Explaining refraction of light through a glass slab

There is a potential problem. The critical angle $c = \sin^{-1}\left ( \frac 1 n\right)$, where $n$ is the refractive index of the glass. At the first interface $r\le c$ and at the second interface \$...

### How to increase the angle of light (without going from a higher to lower index of refraction)?

2,4 GHz is typically knows as RF, and usually not referred to as light. You may want to look into negative index of refraction materials that arise using meta materials. Metamaterials str structures ...

### Could we appreciate Newton ring effects on a computer screen when pressing it?

Turns out, as I asked my physical optics tutor today, such effect can plausibly be depicted as Newton rings, as what's needed for such phenomena to occur is simply for there to be 3 layers, in the ...

### Explanation for an atmospheric optical phenomenon

If the ship doesn't move, from the previous points of view we can determine that the sunlight comes from its front side (with a small lean to starboard). So what we see from above the clouds is not ...