Timeline for How can the total amount of energy in the universe be zero? [duplicate]
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| Jun 19, 2018 at 5:28 | history | closed |
StephenG - Help Ukraine Qmechanic♦ |
Duplicate of Is the total energy of the universe zero?, Is it always possible to define energy of a system? [closed] | |
| Jun 19, 2018 at 5:19 | comment | added | Qmechanic♦ | Possible duplicates: physics.stackexchange.com/q/2838/2451 , physics.stackexchange.com/q/35431/2451 , physics.stackexchange.com/q/40983/2451 , physics.stackexchange.com/q/349768/2451 and links therein. | |
| Jun 19, 2018 at 1:19 | comment | added | StephenG - Help Ukraine | I'm not sure if you're aware of the FLRW metric and I'd also refer you to this question Source of energy for expansion of the universe | |
| Jun 18, 2018 at 23:33 | comment | added | Max | @StephenG not really. It is only going to make our problem simpler. My problem is that the amount of positive energy appears to be greater than the amount of negative energy. In that case, adding dark energy doesn't change anything, as it is also positive energy. | |
| Jun 18, 2018 at 23:23 | comment | added | StephenG - Help Ukraine | You are assuming a "big crunch" by assuming the absence of dark energy which is directly at odds with what we see around us - there seems no way for there to be a big crunch and whatever dark energy is, we need it to explain that observation. Ignoring this is ignoring the elephant in the room. | |
| Jun 18, 2018 at 22:46 | answer | added | S. McGrew | timeline score: 1 | |
| Jun 18, 2018 at 22:45 | answer | added | user192234 | timeline score: 1 | |
| Jun 18, 2018 at 22:43 | comment | added | JMLCarter | $E=mc^2$ ? Really. | |
| Jun 18, 2018 at 22:35 | review | Close votes | |||
| Jun 19, 2018 at 5:28 | |||||
| Jun 18, 2018 at 22:28 | comment | added | Max | @Peter Diehr that is only a matter of pedantry. In reality, we would have a collection of mass and no potential energy in the sense that it would not be convertible into any other type of energy. In fact, under the standard definition, the point mass would have an infinite negative potential energy, but that doesn't reflect the reality. | |
| Jun 18, 2018 at 22:20 | comment | added | Peter Diehr | Potential energy would be a negative value, but the zero point is arbitrary. So this is one way to set the total energy to zero, for a given configuration. | |
| Jun 18, 2018 at 22:20 | comment | added | Max | @StephenG certainly not. In fact, I've only posted this question having thoroughly read all the answers in that thread. | |
| Jun 18, 2018 at 22:17 | comment | added | StephenG - Help Ukraine | Possible duplicate of Total energy of the Universe | |
| Jun 18, 2018 at 21:36 | history | asked | Max | CC BY-SA 4.0 |