All Questions
4
questions
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vote
0
answers
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What would an information-lossy universe be like?
What properties of our universe depend on the nontrivial fact that information can't be lost?
(Previously, I posed this question in terms of time-reversibility, which is a sufficient condition for no-...
- 141
1
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0
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Experimental proof of time-reversibility in microscopic classical physical laws [duplicate]
All the laws of classical mechanics are time-reversible. But the experiments that we carry out on systems, mostly measure macroscopic parameters which are time-irreversible. We know for a reason that ...
- 2,995
32
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11
answers
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In reverse time, do objects at rest fall upwards?
I want to develop a game where time runs backwards, based on the idea that physical laws are reversible in time. However, when I have objects at rest on the earth, having gravity run backwards would ...
- 422
2
votes
1
answer
378
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Do all closed systems, only considering kinematic/mechanical principles, exhibit time reversal symmetry?
It makes a lot of sense to me to imagine a cannonball flying through space as not so much experiencing a macroscopic non-conservative drag force, but as pushing a bunch of air molecules and giving ...
- 6,000