799 reputation
419
bio website 127.0.0.1
location Czech Republic
age 20
visits member for 1 year, 10 months
seen 2 hours ago

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5h
awarded  Notable Question
2d
comment Can open, unsafe nuclear fusion reaction burn the atmosphere?
Given the current political situation, I feel very uncomfortable reading about kilometres wide fireballs created by Russian bombs...
Dec
12
awarded  Popular Question
Dec
3
comment What property of medium is directly related to light propagation speed in that medium?
@JohnRennie could you quote the answer from that question that suits my question too?
Dec
3
comment Looking for the actual reason of refraction explained precisely without analogies
What is $\chi_m$? The math here is a little bit fast and complicated for me.
Dec
3
comment Looking for the actual reason of refraction explained precisely without analogies
@dmckee I'd be very careful before saying that electrons are in motion when bound in atoms. Charged particle in accelerated motion generates electromagnetic waves - yet we do not observe any shining from atoms.
Dec
3
revised What really cause light/photons to appear slower in media?
I tried to make the post more readable. It's still not perfect but it's long and I'm getting tired
Dec
2
asked What property of medium is directly related to light propagation speed in that medium?
Dec
2
comment Magnetic field at infinity
Every reciprocal function converges to zero at infinity. $$\lim \limits_{x \to 1} \frac{c}{x} = 0$$
Dec
2
suggested approved edit on What really cause light/photons to appear slower in media?
Dec
2
comment What really cause light/photons to appear slower in media?
While I believe absorption-emission theory I can't see a way to imagine it working with Young's double-slit interference experiment. If the photon is absorbed, where is it being absorbed if it's on two places at the same time?
Dec
2
comment How is light trajectory affected by the trajectory of environment it passes through?
physics.stackexchange.com/a/11823/20590
Dec
2
accepted How is light trajectory affected by the trajectory of environment it passes through?
Nov
21
awarded  Notable Question
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
Let us continue this discussion in chat.
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
"and yes, typically only certain wavelength get slowed down (that depends on the material).". You said that only one wavelength, dependent on material, experiences significant slow-down due to the charge frequency thing. So why does the rainbow look the same for all materials. Shouldn't red be slowed more given the right oscillation thing?
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
I'm aware of phase velocity. I'm just not so sure we can consider this a movement of photon - phase velocity also applies to acoustic waves, yet you don't way that "air is moving over speed of light". But thanks for reply anyway. Could you please also reply on the first part of my last comment?
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
@AndreasH. You will need to have some examples for your recent clams, because they contradict what I observe in the real world. To me it appears that the difference of the slow down per frequency is not significant and, and that's important in my opinion, it doesn't really "filter one wavelength" - the rainbow has always the same order of colors, regardless of material. It's also completely new for me to hear that photon can move faster than light, could you elaborate?
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
So photons can actually have different velocity than the $c$ constant? What happens to their mass then? If the charges in the material "oscilate at the same frequency" does that mean that only certain wavelength get slowed down?
Nov
20
comment How is light trajectory affected by the trajectory of environment it passes through?
Then how can photons be slowed down if the speed of light is absolute?