There is a room in space floating out in no where. Inside this closed room is a tennis ball. The tennis ball is bouncing around the room at about 25 km/h. The room is 10 foot by 5 foot by 8 foot. Suddenly the universe is split into 1000 different universes. Each universe is exactly the same at the first moment. Now as soon as the universes start off on their own things start changing because of quantum uncertainty. The question is, to the human eye, how long would it take to notice differences in the velocity and position of the tennis balls. Will the difference be noticed in the first year? A thousand years? A million? Never? Immediatley?
And how long would it take to notice differences in a person who was in the same situation as the tennis ball? (IE: The brain)
I'm not expecting anyone to get this down very precise but I'd enjoy opinions/estimates. Thank you!
2006-09-24 06:55:07 · 4 answers · asked by Someone 2 in Science & Mathematics ➔ Physics
The answer is "more than a million," and here's why. With respect to quantum uncertainty, a tennis ball in a 400 cubic foot room is a very large (macroscopic) object. Quantum uncertainty operates
For the moment, forget about splitting the universe. Just imagine the tennis ball bouncing around the room in the middle of nowhere, and ask how long it will take quantum uncertainty to make a
To answer this, consider a much more "hostile" environment -- the surface of the earth. We've found preserved skeletons well over a million years old. Quantum uncertainty didn't change them, so in a million years, the tennis ball will still be bouncing around the room in the middle of nowhere, whether in this universe or in the thousand universii.
2006-09-24 07:56:58 · answer #1 · answered by bpiguy 7 · 0⤊ 0⤋
Odds and probability over the infinite size of the area that surrounds us, suggests that your experiment exists with all the possibilities you can think of,even the impossible ones.
The limiting factor is what you can think of, if you cant imagine one of those balls splitting it 1000 balls then you are limiting your possibilities.
2006-09-24 20:52:51 · answer #2 · answered by treb67 2 · 0⤊ 0⤋
It would not be right away because tennis balls behave fairly well: my guess would be about an hour for the naked eye to be able to discern differences.
2006-09-24 14:48:58 · answer #3 · answered by bruinfan 7 · 0⤊ 0⤋
theoretically they could look exactly the same after infinity years, but the probability of the is about 1/infinity.
2006-09-24 15:36:33 · answer #4 · answered by z 2 · 0⤊ 0⤋