- #1
keithdow
- 29
- 1
Problem 17.3 in the "problem book in relativity and gravitation" states:
"Show that once a rocket ship crosses the gravitational radius (horizon) of a Schwarzschild black hole, it will reach r=0 in a proper time tau less than or equal to pi*m, no matter how the engines are fired."
My question is the proper time is at most pi*m. What time will elapse for an external observer at infinity during the pi*m proper interval? How do I show that?
Thanks.
"Show that once a rocket ship crosses the gravitational radius (horizon) of a Schwarzschild black hole, it will reach r=0 in a proper time tau less than or equal to pi*m, no matter how the engines are fired."
My question is the proper time is at most pi*m. What time will elapse for an external observer at infinity during the pi*m proper interval? How do I show that?
Thanks.