4 ms·
That's perpetual motion machines, not perpetual motion. As a closed system, the universe (as a whole, not in parts) absolutely qualifies as being in perpetual m
by TheRealPomax 4y ago
That's perpetual motion machines, not perpetual motion. As a closed system, the universe (as a whole, not in parts) absolutely qualifies as being in perpetual motion, you just can't take energy out of the system.
(which is convenient for us, because we're part of the system)
- deleted 4y ago[deleted]
- new_user_final 4y agowhat if some higher beings outside of our universe is using us (this universe) as a perpetual machine!
- nico 4y agoThat’s a Rick and Morty episode
- TheRealPomax 4y agoThen it's no longer perpetual, because the total energy in the system decreases over time.
- tshaddox 4y agoOkay sure, it’s just that no one uses the term “perpetual motion” except to refer to perpetual motion machines as I described. Even the Wikipedia article on the topic is titled “perpetual motion.” And the entire universe, as far as we know, is not in perpetual motion. i.e. does not violate the laws of thermodynamics.
- TheOtherHobbes 4y agoI don't think you can apply the laws of thermodynamics to the Big Bang. First there was nothing, then there was everything. For currently undefined values of "first" and "then." It's very much an out-of-scope problem.
- TheRealPomax 4y agoNo (serious) person uses it for the quantum scale either. Same problem, just other end of the scale. The very idea of "motion" doesn't even apply to quantum particles.