|
Thermodynamic quirk : Warm Ice Giant ?
|
|
| Voekoevaka | Date: Tuesday, 17.07.2012, 18:17 | Message # 1 |
 World Builder
Group: SE team
France
Messages: 1016
Status: Offline
| I was travelling in a far galaxy, and I tell myself : "This is a cool place. This star seems to be interresting."
Getting closer to it, I noticed its 11 planets, and by clicking randomly on one of them, the type "Warm ice giant" hits me.
The temperature of this planet is 300 Kelvin, and water freezes under 273 Kelvin. Isn't strange ?
And I remember : "but, if the pressure is high, maybe water could exist at solid form ?"
Jumping on the internet to find the Clapeyron diagram of water :
Noticing that the slope of the MT curve is negative, and the coordinates of the point T are (273.16 K, 611 Pa), I conclude : "Ice can't exist when the temperature is over 274 K".
Maybe this planet (RS 6647-2395-9-129926115-4 3) should be called "watered warm giant".
But maybe I just forgot something, and I'm wrong... Expecting your thoughts...
Want some music of mine ? Please go here !
|
| |
| |
| Talisman | Date: Tuesday, 17.07.2012, 18:26 | Message # 2 |
 Pioneer
Group: Users
United States
Messages: 409
Status: Offline
| It's not actually made of ice, it's various other chemicals, it's just called an ice giant. 
|
| |
| |
| HarbingerDawn | Date: Tuesday, 17.07.2012, 19:41 | Message # 3 |
 Cosmic Curator
Group: Administrators
United States
Messages: 8717
Status: Offline
| "Ice" in this case does not refer to water ice. In planetary science, the word "ice" refers to a variety of substances, like water, ammonia, carbon dioxide, nitrogen, methane, etc., regardless of their state of matter. Ice giants are predominantly gaseous planets that contain significant quantities of these substances relative to hydrogen and helium. Examples in our system are Uranus and Neptune.
More information here: http://en.wikipedia.org/wiki/Volatiles
All forum users, please read this!
My SE mods and addons
Phenom II X6 1090T 3.2 GHz, 16 GB DDR3 RAM, GTX 970 3584 MB VRAM
|
| |
| |
| Voekoevaka | Date: Tuesday, 17.07.2012, 20:13 | Message # 4 |
|
World Builder
Group: SE team
France
Messages: 1016
Status: Offline
| You all are right : it could be another substance... But, what kind of ice can contain such a planet at this temperature ?
Want some music of mine ? Please go here !
|
| |
| |
| apenpaap | Date: Tuesday, 17.07.2012, 20:44 | Message # 5 |
 World Builder
Group: Users
Antarctica
Messages: 1063
Status: Offline
| Well, since ice giants are essentially small gas giants with "ices" mixed in, it could be any of them really, just in their gaseous phase. Any of the ones Harbinger mentioned could be part of the ices in the planet.
Also, in 0.95 extremely hot ice giants were actually the most common type of planet because of a bug causing the first planet from solitary stars always to be an ice giant. XD So you saw a lot of these at first sight paradoxical planets.
I occasionally stream at http://www.twitch.tv/magistermystax. Sometimes SE, sometimes other games.
Edited by apenpaap - Tuesday, 17.07.2012, 20:47 |
| |
| |
| BlackArk | Date: Wednesday, 18.07.2012, 00:39 | Message # 6 |
|
Space Pilot
Group: Users
United States
Messages: 137
Status: Offline
| Warm ice giant well that's not right 
Edited by BlackArk - Wednesday, 18.07.2012, 00:40 |
| |
| |
| SpaceEngineer | Date: Wednesday, 18.07.2012, 10:38 | Message # 7 |
 Author of Space Engine
Group: Administrators
Russian Federation
Messages: 4800
Status: Offline
| Water and other "ices" really exist in a solid form under huge pressure. Google for "ice VII" for example.
PS: SpaceEngine should have some ingame wiki to prevent such questions in the future. Warm/hot Ice giants and Oceanias, shape of red giants, what else?
*
|
| |
| |
| apenpaap | Date: Wednesday, 18.07.2012, 12:07 | Message # 8 |
|
World Builder
Group: Users
Antarctica
Messages: 1063
Status: Offline
| Perhaps making a FAQ and a sticky pointing towards it would help? Not everyone witha question will read it, probably, but some will.
I occasionally stream at http://www.twitch.tv/magistermystax. Sometimes SE, sometimes other games.
|
| |
| |
ENG
New site
France 
United States 
Antarctica 
Russian Federation