|
|
|
|
|
|
by scottmsul
1255 days ago
|
|
|
In general relativity space-time is a 4-dimensional (3 space + 1 time) surface that itself can expand, contract, or move around. It's perfectly reasonable in GR to have a distance be L at time t, then L+dL at time t+dt. No extra spatial dimensions needed. |
|
|