How fast is light, relative to light?

Question

If your frame of reference was a photon, would the speed of a different photon still be constant?

Answer 1

There is no such reference frame as "the reference frame of a photon" in vacuum. Such a thing does not exist, because in that hypothetical frame, at least one photon has speed zero. But by axiom, all photons have speed c in all reference frames. Therefore, the question is meaningless.

Unless you're talking about photons in a medium. Then all the photons in that medium travel at speed c/n relative to the rest frame of that medium and you can use the standard equations of Relativity to determine their relative velocities.

Answer 2

There is no reference frame in which a photon is stationary (in vacuum), so the question is moot. However, to in any frame traveling wrt earth's frame arbitrarily close to the speed of light, the speed of an actual photon would be the same as in every other frame.

Answer 3

How fast is light, relative to light?
- still at the speed of light.

If your frame of reference was a photon, would the speed of a different photon still be constant?
- yes.

Answer 4

light travels at the same speed in a vacuum, regardless of your frame of reference. If two photons are traveling toward each other, each going at speed c, the speed of one as viewed from the other would still be c rather than 2c.

Answer 5

particular Relativity prevents any observer measuring the fee of sunshine to have a distinctive value from that measured by employing the different observer. besides, basically mass-much less photons and probably neutrinos (???) can return and forth on the fee of sunshine. in spite of the incontrovertible fact that, there exists a 'little twist', that's in reality un-measurable, yet comes from a answer for the propagation of alerts interior a waveguide. A waveguide is a steel tube use to transmit extremely intense frequency radio waves (alongside with radar sign) and that's many times oblong with side x=a and side y=b . whilst coping with the transverse electric powered (TE) wave (Ez = 0) it extremely is shown that for a waveguide of side ‘y=b’: - -n²?² = a million .-. a million ___ ... __ . __ b² ... ?g² .. ?0² the place ‘?g’ is the wavelength of the radiation interior the instruction manual and ‘?0’ is the vacuum wavelength. This equation means that ‘?g > ?0’ for the radiation interior the instruction manual and so the area velocity is greater desirable than the fee of sunshine!!! or up = (?g/?0).c for this reason, up> c in spite of the incontrovertible fact that, we can't degree the area velocity! The sign velocity ‘us’ could be shown to be: - us = ?(c(a million -(n?0/2b))) the place 'us' is the sign velocity in the waveguide, with ‘us

Answer 6

In a certain medium yes. But keep it in mind that velocity of light is not constant in all mediums. It changes from medium to medium.

Answer 7

If you are in a spaceship traveling at the speed of light, which is 186,282 miles per second, would your headlights work?

The answer is: you wouldn't need them. It's not like you're going to hit a cat or something....

Answer 8

Oops wht's dis Q ... i listen light relative to velocity,humidity & ....
But never listen light relative to light ......