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TMulhall
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I am not a scientist, so my apologies if this question is naïve, but I have read a bit on the subject.
Anyway, I was recently watching a documentary on Einstein and the standard illustration of Space-time being warped was presented. A massive ball was placed on the trampoline of “space-time” and a smaller ball rolling past was drawn into the void created. Spinning like water down a drain, circling and slowly closing into the hole created.
My question is; “Don’t you need “gravity” to draw the smaller ball downward into the void created?” The illustration makes sense here on Earth but it seems to assume the whole set is subject to the downward force of gravity. I assume this illustration would not hold true in weightless space, the ball would cruise right over the hole created.
Can the definition of gravity include gravity? Is there a larger gravity present for this set I am ignorant of? Maybe I haven’t read enough.
I would appreciate any replys / thoughts.
Thanks,
T. Mulhall
Anyway, I was recently watching a documentary on Einstein and the standard illustration of Space-time being warped was presented. A massive ball was placed on the trampoline of “space-time” and a smaller ball rolling past was drawn into the void created. Spinning like water down a drain, circling and slowly closing into the hole created.
My question is; “Don’t you need “gravity” to draw the smaller ball downward into the void created?” The illustration makes sense here on Earth but it seems to assume the whole set is subject to the downward force of gravity. I assume this illustration would not hold true in weightless space, the ball would cruise right over the hole created.
Can the definition of gravity include gravity? Is there a larger gravity present for this set I am ignorant of? Maybe I haven’t read enough.
I would appreciate any replys / thoughts.
Thanks,
T. Mulhall