All Questions
5
questions
0
votes
2
answers
51
views
Spacetime in photon frame [duplicate]
The time-axis and the space-axis overlap for a photon's world line. Does it mean that photon has no "past" or "future" but only "present" and no "there" but ...
- 199
0
votes
2
answers
404
views
How the world changes from the point of view of a photon [duplicate]
Imagine a universe without time, or more specifically without the Flow of Time. Everything will be a 2D projection and nothing more. No movement, no interaction, and in other words no Change.
But our ...
- 129
-2
votes
1
answer
2k
views
How far does a photon move in the 4th dimension when it travels one light second? [closed]
In one second a photon moves 3x10^8 meters through the three spatial dimensions.
Light's velocity is 3x10^8 m/s.
If the photon moved at all in the fourth dimension, it's velocity would no longer be ...
0
votes
4
answers
748
views
Does light in vacuum actually travel at the speed of light? [duplicate]
I know my question sounds like a joke (and I suppose on some level it is) but I'm confounded by the following:
As the thought experiment goes, if I'm in a spaceship flying rapidly the people on earth ...
- 469
2
votes
3
answers
453
views
What is the cause the light is affected by gravity? [duplicate]
I know that photons have no mass and that a photons exist only moving at the speed of light. So what is the cause that a massive astronomical object can bend a ray of light?
I have two thoughts, but I ...
- 181