Undergrad Time Travel in Newtonian Spacetime: Is it Possible?

Click For Summary
Time travel in Newtonian curved spacetime raises questions about its feasibility due to the nature of Newtonian physics, which defines space as Euclidean and time as absolute. The discussion suggests that Newtonian curved spacetime is merely a formalism for traditional Newtonian gravity, lacking mechanisms for time travel. It is implied that time travel could only be considered if the spacetime exhibits non-trivial topology. The conversation highlights the limitations of Newtonian mechanics in addressing time travel concepts. Ultimately, the consensus leans towards skepticism regarding the possibility of time travel within this framework.
accdd
Messages
95
Reaction score
20
Is time travel possible in Newtonian curved spacetime?
 
Physics news on Phys.org
Newtonian space is Euclidean and Newtonian time is absolute.
 
accdd said:
Is time travel possible in Newtonian curved spacetime?
Newtonian curved spacetime is just another formalism for standard force-based Newtonian gravity. So I don’t see how, unless the spacetime has some non-trivial topology
 
MOVING CLOCKS In this section, we show that clocks moving at high speeds run slowly. We construct a clock, called a light clock, using a stick of proper lenght ##L_0##, and two mirrors. The two mirrors face each other, and a pulse of light bounces back and forth betweem them. Each time the light pulse strikes one of the mirrors, say the lower mirror, the clock is said to tick. Between successive ticks the light pulse travels a distance ##2L_0## in the proper reference of frame of the clock...

Similar threads

  • · Replies 27 ·
Replies
27
Views
5K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 12 ·
Replies
12
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 12 ·
Replies
12
Views
1K