- #1
CosmicVoyager
- 164
- 0
Greetings,
I am trying to figure out how that can be that everyone can measure all light from any source to be the same speed no matter the speed of the measurer or the source. It seems that the photons would have to be in different places depending on where the person doing the measuring is and at what speed they are traveling.
What would happen in this scenario:
If a year after a photon is emitted, there is an object, which is stationary relative to the source, a light year away in the path of the photon, then the photon will be there and be absorbed. And the light will seem to have taken one year to travel one light year. Correct?
Now, if instead, a year after the photon is emitted (according to clocks at the source and first object), there is an object which is moving (relative to the source and first object) and therefore experiencing time dilation (relative to the source and first object), in the same place as the first object, will the photon be there and be absorbed? Since clocks would be running slower for that object, it would measure the light to have taken less time to travel the light year. So it seems that it would *not* detect the photon. It seems that the second object would have to be in a different location to detect the same photon that the first object would. It seems that whether the photon is at a location depends on the relative speed of an object that would be there to detect it.
Thanks
I am trying to figure out how that can be that everyone can measure all light from any source to be the same speed no matter the speed of the measurer or the source. It seems that the photons would have to be in different places depending on where the person doing the measuring is and at what speed they are traveling.
What would happen in this scenario:
If a year after a photon is emitted, there is an object, which is stationary relative to the source, a light year away in the path of the photon, then the photon will be there and be absorbed. And the light will seem to have taken one year to travel one light year. Correct?
Now, if instead, a year after the photon is emitted (according to clocks at the source and first object), there is an object which is moving (relative to the source and first object) and therefore experiencing time dilation (relative to the source and first object), in the same place as the first object, will the photon be there and be absorbed? Since clocks would be running slower for that object, it would measure the light to have taken less time to travel the light year. So it seems that it would *not* detect the photon. It seems that the second object would have to be in a different location to detect the same photon that the first object would. It seems that whether the photon is at a location depends on the relative speed of an object that would be there to detect it.
Thanks