Recent content by isotherm

Thank you very much! The video is great. If I understood correctly, the wave is slowed by being "shifted back" (due to superposition) repeatedly. There is no only one superposition. Each layer of the material is emitting a secondary wave, and the shift due to superposition is repeated as long as...

So, the superposition of the waves in the material is slowing the original wave, but the same superposition after exiting the material, in vacuum, somehow does not have the same effect. Why?

The current explanation in Wikipedia for the slowing of the light wave phase velocity in a transparent medium considers: From another discussion I learned that the waves radiated by the "shaken" charges are real waves (not virtual), so they would also leave the medium, as the original wave. In...

Not exactly, because the abstract says that "The neutral ϱ-meson propagator is computed" ... and, as I already wrote, the abstract is all that I can read. Where I can read about this? Individual photons exiting the medium can be and are measured but, of course, there is no way to tell if the...

I can only see the abstract and, maybe because of that, I don't understand how is the article relevant for this discussion. Ok, so photons must be absorbed from the incoming wave in order to "shake" the charges. How about the radiation emitted (with a delay) by the "shaken" charges? Is this a...

So photons from the incident wave are absorbed, in order to "shake" the charges inside the medium? Interesting, especially when photons are "traveling" one at a time, as described here (thank you renormalize for the link in post #18).

Without photons from the incident wave being absorbed? How? The photoelectric effect showed that: Yes, but by using it you know exactly how many photons entered the medium, not only how many photons got through it and hit the detector. I didn't say or imply that. I only implied that EM forces...

First, I want to thank you for the entire post. Of course, I knew about phase, group and front velocities, but I enjoyed reading your presentation. About the quote above, this is the quantum description of what the microscopic explanation in wikipedia is trying to say? I must confess that I...

So, basically, we don't know what a photon "does" between emission and detection, but we also don't need to, because, using QM, we OK, I should probably buy Feynman's book. Thank you!I have one last question about photons in a medium: force carrier photons are always "traveling" with the speed...

So the interference in the double-slit experiment for "single-photons" is different, in result, from one recorded with a beam of light (with the same frequency)? If not, why not?

Very interesting. Thank you! Sorry, somehow I missed your confirmation of refraction (post #4). So, single photons do refract when entering in another medium. Does it mean that there is a decrease in speed (for single photons) when entering (from vacuum) in a medium with refractive index...

Ok, but if was done? We used the same source (or similar) to determine refraction?

It is sending/emitting one photon at a time, like in the double-slit experiment.

So, if you "shoot" singular photons, with an angle, through water, and you put detectors in the water, both straight ahead and where a light beam would go, you should determine if the refraction occurred. It was done?

Ok. Ok, thank you.