# A Photons 2D universe?

1. Oct 18, 2006

### LHarriger

I was trying to envision the universe from the standpoint of a photon and it seems that based on the Lorentz contraction:
$L = L_{0}\sqrt{1-u^2/c^2}$
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
$\bar{t} = \frac{t}{\sqrt{1-u^2/c^2}}$
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.

2. Oct 18, 2006

### Mortimer

There was an earlier discussion on this topic: Photon's perspective of time already. Perhaps it answers your question.

3. Oct 18, 2006