Photons Perceive Universe as 2D: A Curious State?

  • Context: Graduate 
  • Thread starter Thread starter LHarriger
  • Start date Start date
  • Tags Tags
    2d Photons Universe
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 6K views
LHarriger
Messages
68
Reaction score
0
I was trying to envision the universe from the standpoint of a photon and it seems that based on the Lorentz contraction:
[itex]L = L_{0}\sqrt{1-u^2/c^2}[/itex]
since u = c this implies that, from the photons point of view, the length of the universe in the photons direction of travel contracts to zero.
Moreover, based on time dialation
[itex]\bar{t} = \frac{t}{\sqrt{1-u^2/c^2}}[/itex]
since u = c any time t-bar measured by an observer will correspond to a zero time measurement by the photon.
Does all this mean that a photon observes itself as stuck timeless and stationary on a 2D sheet?
This just seems like a curious state of affairs and I was wondering if my reasoning was correct.
 
Physics news on Phys.org
LHarriger said:
I was trying to envision the universe from the standpoint of a photon and it seems that based on the Lorentz contraction:
[itex]L = L_{0}\sqrt{1-u^2/c^2}[/itex]
since u = c this implies that, from the photons point of view, the length of the universe in the photons direction of travel contracts to zero.
Moreover, based on time dialation
[itex]\bar{t} = \frac{t}{\sqrt{1-u^2/c^2}}[/itex]
since u = c any time t-bar measured by an observer will correspond to a zero time measurement by the photon.
Does all this mean that a photon observes itself as stuck timeless and stationary on a 2D sheet?
This just seems like a curious state of affairs and I was wondering if my reasoning was correct.
There was an earlier discussion on this topic: https://www.physicsforums.com/showthread.php?t=107741" already. Perhaps it answers your question.
 
Last edited by a moderator: