- #1
najd
- 9
- 0
Hello,
Surfing the web I came across a question posted by someone. Basically the question asked if I were to have a very, very long rod, say 1000 ly long, and at each end I place an observer. If observer A pushes the rod, would observer B instantly detect the nudge?
I do understand that this is pretty much impossible because the nudge would travel at the limited speed of sound in the regular rod, but it got me wondering. Say I have a perfectly rigid rod, with no vacuum whatsoever between the atoms composing the rod. A super compressed rod—a black hole of a rod, so to speak—if I were to use that instead, would observer B instantly detect the nudge?
Or, let me put it this way. Say that a (hypothetical) detector is placed at the far eastern end of a 1000 ly wide black hole. It so happens that a meteor strikes the western end of said black hole and thereby gets sucked by it. Would the detector instantly know of this disturbance, given that both objects are within the event horizon of the black hole?
I hope this makes sense. :P
Surfing the web I came across a question posted by someone. Basically the question asked if I were to have a very, very long rod, say 1000 ly long, and at each end I place an observer. If observer A pushes the rod, would observer B instantly detect the nudge?
I do understand that this is pretty much impossible because the nudge would travel at the limited speed of sound in the regular rod, but it got me wondering. Say I have a perfectly rigid rod, with no vacuum whatsoever between the atoms composing the rod. A super compressed rod—a black hole of a rod, so to speak—if I were to use that instead, would observer B instantly detect the nudge?
Or, let me put it this way. Say that a (hypothetical) detector is placed at the far eastern end of a 1000 ly wide black hole. It so happens that a meteor strikes the western end of said black hole and thereby gets sucked by it. Would the detector instantly know of this disturbance, given that both objects are within the event horizon of the black hole?
I hope this makes sense. :P