Timeline for Settings formed by Uncontrolled Terraforming of Venus and Mars via Portals
Current License: CC BY-SA 3.0
14 events
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| Jun 16, 2020 at 11:03 | history | edited | CommunityBot |
Commonmark migration
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| Jun 30, 2017 at 14:37 | history | edited | PipperChip | CC BY-SA 3.0 |
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| Mar 10, 2015 at 19:39 | history | edited | Brythan | CC BY-SA 3.0 |
Consistent capitalization; typos.
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| Mar 10, 2015 at 17:41 | history | edited | PipperChip | CC BY-SA 3.0 |
grammar
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| Dec 7, 2014 at 18:47 | history | edited | HDE 226868♦ | CC BY-SA 3.0 |
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| Sep 26, 2014 at 21:08 | comment | added | Tim B | Realistic? Not really as the portals are purely theoretical. Happy to discuss conservation of energy wrt portals but you'd need a new question as there already too many comments here :) | |
| Sep 26, 2014 at 17:29 | comment | added | kaine | @TimB just out of curiousity, do you have a more realistic way for a planet based portal to work? That would be an interesting topic to discuss. | |
| Sep 26, 2014 at 17:28 | vote | accept | kaine | ||
| Sep 20, 2014 at 19:18 | comment | added | Tim B | @PipperChip True, the Portal portals conserve Kinetic but not Potential energy, that's great as a game mechanic but clearly broken from a Laws-of-Thermodynamics perspective though... unless the portals have some sort of power source ... as otherwise one of these portals is a source of unlimited energy... | |
| Sep 20, 2014 at 19:15 | comment | added | PipperChip | @TimB a la portals from portal / portal 2, gravity doesn't transfer through the portals; the momentum of things passing through the portals appears to be the only thing conserved. I ran with this assumption. | |
| Sep 20, 2014 at 15:37 | comment | added | Tim B | It depends on the function of the portals but unless it's injecting energy to lift the gasses out of the deeper gravity well then the pressure differential will have to do that. I'm not sure the exact science but my first instinct is to look at the difference in weight between the gasses at the surface of the two planets and you need to inject enough energy to lift that much to cross from one to the other.... this also means it will stabalize with Mars at a lower atmospheric pressure than Venus... | |
| Sep 20, 2014 at 14:34 | comment | added | Wesley Obenshain | @TimB Venus has almost twice as much gravity as Mars (both of which, incidentally, are less than Earth's) which would affect the amount of atmospheric pressure each planet is capable of supporting (I assume). I don't have the science or math on hand to do any calculations but I don't think gravity will actually affect the pressure differential. Instead, what might happen is that the atmosphere from Venus would shift to Mars, which wouldn't be able to support the denser atmosphere and start venting it into space, reducing the atmospheric pressure of both planets. Hmm... | |
| Sep 19, 2014 at 13:22 | comment | added | Tim B | An excellent answer, it seems to be assuming that the portals are injecting the potential energy required to lift the atmosphere out of the gravity well of Venus and into that of Mars though. I'd be interested to see how that changes the result. | |
| Sep 18, 2014 at 21:27 | history | answered | PipperChip | CC BY-SA 3.0 |