How can time only have one direction?

In summary: There are six possible trajectories, and you could have chosen any of them to represent "time going in the future". But of course, by choosing the ones that you did, you're implying that you're working in a spacetime that is time-orientable, so that the distinction between future and past light cones is unambiguous throughout.
  • #106
After a brief discussion this thread will remain closed
 
  • Like
Likes vanhees71

Similar threads

I Has anyone measured the speed of light in one direction?
2
Replies
45
Views
5K
I Curved spacetime bulging in time direction
Replies
30
Views
1K
I How can the Universe know when you change directions?
2
Replies
42
Views
2K
B Reciprocal time dilation
Replies
14
Views
520
I Question about length contraction
2
Replies
45
Views
4K
B Trying to understand what "time" is (layperson)
Replies
21
Views
2K
B Why does length contraction occur and how does it relate to time dilation?
2
Replies
63
Views
4K
I Questions about a thought experiment involving time dilation
Replies
2
Views
215
I A question about Relativity of Time using Time dilation experiment
Replies
12
Views
1K
I SR Light Wavelength & Direction: Questions Explained
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top