4th dimension

  • Thread starter -=Red=-
  • Start date
19
0
So do we know for sure what the 4th spatial dimension is? I have read in many places that it is time. I would say this makes sense because we are perceiving time in 3 dimensional slices in our dimension. The same way a 2D being would perceive 2D slivers of a 3D object in its own dimension.
 

JesseM

Science Advisor
8,492
12
So do we know for sure what the 4th spatial dimension is? I have read in many places that it is time. I would say this makes sense because we are perceiving time in 3 dimensional slices in our dimension. The same way a 2D being would perceive 2D slivers of a 3D object in its own dimension.
Time is treated as part of a unified 4-dimensional "spacetime" in relativity (shouldn't this have been posted in the relativity forum?), but for technical reasons I don't think it's quite right to treat it as a fourth spatial dimension, see this thread for some discussion. On your other thread you asked for book recommendations and one I offered was General Relativity from A to B, this is a very good nontechnical introduction to the meaning of "spacetime" and why it makes sense to say that time is treated as a "dimension".
 
19
0
Excellent. I am looking for that book on borders right now. Once again, thanks for the help buddy.
 

Related Threads for: 4th dimension

  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
12
Views
2K
Replies
12
Views
3K
  • Last Post
Replies
3
Views
7K
Replies
5
Views
7K
  • Last Post
Replies
4
Views
2K

Hot Threads

Top