Timeline for How can the total amount of energy in the universe be zero?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 20, 2018 at 11:04 | comment | added | Max | Rest energy as in mass-energy and radiation energy; total kinetic energy sum (the expansion of space kinetic energy) under any reference frame; and the total GPE sum. | |
| Jun 20, 2018 at 2:05 | comment | added | user192234 | Rest with respect to what? kinteic energy due to velocity or momentum.. what is the particle's velocity...? | |
| Jun 20, 2018 at 2:02 | comment | added | user192234 | What field? The ordinary definition is "A field such that if you put a test particle over there (not infinity) in 1 sec from now, say, such and such force would be felt by the test particle". but if you put it infinity far away nothing is felt by no one. there is no concept of potential either way with your answer. | |
| Jun 20, 2018 at 1:45 | comment | added | Max | On the last bit: if I keep dark energy, another question arises: wouldn't that, under the 0-energy hypothesis, then imply a big crunch scenario? As in 'rest energy + kinetic energy = |GPE|', in which case |GPE|>KE? | |
| Jun 20, 2018 at 1:39 | comment | added | Max | I know this might be a bit awkward, but I have already figured out an answer myself. The problem was that I considered the definition of potential energy completely arbitrary. Now I know that that definition comes from the assumption that a point infinitely far away from the field is indistinguishable from a point in no field at all. | |
| Jun 20, 2018 at 0:55 | comment | added | user192234 | Added elaborate. | |
| Jun 20, 2018 at 0:53 | history | edited | user192234 | CC BY-SA 4.0 |
blah blah
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| Jun 19, 2018 at 22:09 | comment | added | Max | Can you elaborate on your last point? If I understand you correctly, the energy is NOT 0? | |
| Jun 18, 2018 at 23:54 | history | edited | user192234 | CC BY-SA 4.0 |
added 590 characters in body
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| Jun 18, 2018 at 22:45 | history | answered | user192234 | CC BY-SA 4.0 |