# Tag Info

9

Light does not slow down during a reflection. Light is a signal disturbance in electric and magnetic fields. These disturbances propagate through space at a fixed speed $c$ in vacuum. The situation is completely analogous, in a mathematical sense, to a wave pulse that is sent along a string. When the pulse encounters a boundary, it flips direction, and may ...

6

In this case, it would be useful to not consider light in its particle form as photons, but instead to consider it as a wave - see this wikipedia page. Then, the wave is simply reflected from the surface, without us having to consider the kinetics of any particle. The wave, in a vacuum, would continue to propagate at the speed of light, regardless of the ...

5

Let me explain in purely classical terms (not the description of reality, but easy to imagine). You realized that when a ball bounces off the wall, at a certain point, it has no momentum. However, it must still have all the energy of the movement (neglecting losses to environment) - where did that energy go? The ball is formed of many discrete atoms, bound ...

3

As mentioned in comments, a photon is "delocalised", so it feels the whole system. You may imagine a photon as a long-long wave (to have a defined frequency) and as such it interacts with the whole material. More strictly, one can say that the source of photon is the whole set of charges, so the photon is a collective mode of excitation of a given system. ...

2

I think you are perhaps confusing reflection at a corner with a "corner reflector" (https://en.wikipedia.org/wiki/Corner_reflector). The latter is a type of mirror which reflects light back to where it came from, as shown in your diagrams. The reflection comes from the 3 perpendicular mirrors, rather than at the join between them. There is no "specular" ...

1

You'd probably have to know the composition of your "standard glass" to get an idea of the spectrum. Even then it'd be difficult to find any literature specifically related to your glass. If, for example, your sample is a beer bottle or something like that then the manufacturer would surely have that data but might not make it available. It is totally ...

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