Timeline for How does the Earth not lose its atmosphere to space? [closed]
Current License: CC BY-SA 4.0
44 events
| when toggle format | what | by | license | comment | |
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| Jul 31, 2023 at 8:35 | history | left closed in review |
ProfRob Jean-Marie Prival blademan9999 |
Original close reason(s) were not resolved | |
| Jul 14, 2023 at 13:13 | comment | added | Autodidact | @ProfRob your condescension reflects on you far more than it does on belittling me the inquirer. | |
| Jul 14, 2023 at 6:26 | history | edited | Sten | CC BY-SA 4.0 |
The last edit to the title was gibberish. Why was it approved?
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| Jul 14, 2023 at 2:32 | review | Reopen votes | |||
| Jul 31, 2023 at 8:35 | |||||
| S Jul 14, 2023 at 1:29 | history | edited | Pierre Paquette | CC BY-SA 4.0 |
Fixed grammar
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| S Jul 14, 2023 at 1:29 | history | suggested | CommunityBot | CC BY-SA 4.0 |
The Casimir effect has given rise to the Quantum Field theory as it relates to all vacuums
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| Jul 13, 2023 at 15:11 | review | Suggested edits | |||
| S Jul 14, 2023 at 1:29 | |||||
| Jun 17, 2020 at 9:47 | history | edited | CommunityBot |
Commonmark migration
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| Mar 4, 2019 at 14:10 | history | closed |
uhoh user1569 Chappo Hasn't Forgotten Mick Mike G |
Not suitable for this site | |
| Mar 4, 2019 at 9:50 | answer | added | Hobbes | timeline score: 5 | |
| Mar 3, 2019 at 23:07 | comment | added | Autodidact | If earth is an open system then the atmosphere is part of space and this would demand entropy but apparently earth’s atmosphere can be held to the earth. Therefore I’d like a citation where this can be reproduced and demonstrated to be true. Observation is not confirmation because it invokes a logical fallacy and it doesn’t follow the scientific method. A pressure without a container is what’s been claimed. I’m not discussing temperature, I’m addressing pressure. I take your point with the solar power panels but temperature and pressure are not the same. | |
| Mar 3, 2019 at 22:51 | comment | added | Peter - Reinstate Monica | I don't see how exactly the second law ("entropy only ever increases in closed systems") comes into play: The earth is most emphatically not a closed system, so entropy can very well decrease here, locally. (I'm not sure it does, I'm just sayin'. For example, humanity could harvest solar energy (and low entropy...) with a Dyson sphere and cool Earth down, essentially creating a local area of low entropy, much like your fridge at home.) | |
| Mar 3, 2019 at 21:45 | comment | added | Autodidact | If this stack is not the correct stack, I’m open to having it transferred to the physics stack or which ever is deemed appropriate. Though astronomy most certainly is physics based. | |
| Mar 3, 2019 at 21:00 | answer | added | UKMonkey | timeline score: 11 | |
| Mar 3, 2019 at 20:35 | history | edited | Autodidact | CC BY-SA 4.0 |
Elaborated the question to be understood more clearly
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| Mar 3, 2019 at 20:22 | comment | added | Autodidact | Could you please elaborate and provide this in answer form with citations? Thank you in advance. | |
| Mar 3, 2019 at 20:05 | comment | added | Mazura | The atmosphere presses on the Earth, and everything else in it due to displacement (and it's not moving into the vast space full of low pressure) because of gravity. | |
| Mar 3, 2019 at 20:00 | comment | added | Autodidact | Fine I’ll retract the negative and positive pressure simplification. Pressure requires something to press upon. What is the atmosphere pressing upon? A vacuum is low pressure and atmosphere is high pressure. Therefore the gas will fill the space. Why is the atmosphere not moving into the vast space full of low pressure? | |
| Mar 3, 2019 at 19:57 | comment | added | Mazura | "The vacuum of space is incredibly powerful" - you're looking at it backwards. The pressure of the atmosphere you're under is immense, due to gravity. In 'space', that pressure is much less, but it's non-zero no matter how far you go. There is no demarcation where "positive pressure touching a negative pressure" is. | |
| Mar 3, 2019 at 15:07 | comment | added | peterh | @Autodidact Edit it into the question, make it easily comprehensible for the voters. Now it has 3 closure and 2 "leave open" votes. | |
| Mar 3, 2019 at 15:03 | answer | added | Peter - Reinstate Monica | timeline score: 9 | |
| Mar 3, 2019 at 14:47 | answer | added | HR04375439 | timeline score: 2 | |
| Mar 3, 2019 at 14:01 | comment | added | PM 2Ring | It doesn't stop. The pressure drops (approximately) according to the exponential formula in the Scale Height article. It's an approximation because it assumes constant temperature, an ideal gas, and a uniform gravitational field (but the strength of Earth's gravity is only marginally weaker at an altitude of 100 km relative to that at sea level). | |
| Mar 3, 2019 at 13:25 | comment | added | Autodidact | I see, the second law of thermodynamics would demand that the rare gas which has a torr value reach equilibrium with the atmosphere immediately next to it, which has a higher torr value. My question is why can they remain in proximity and maintain their torr values thereby defying the second law of thermodynamics. I don’t have the answer which is why I asked. Pressure demands a gas fill the space. Yet it stops at that tangential point but only partially. Why? | |
| Mar 3, 2019 at 13:19 | comment | added | peterh | @Autodidact It is rare gas. $\approx 1 \frac{\rm atom}{\rm cm^3}$. I interpreted your question as a question about the dynamics and thermodynamics of this rare gas. | |
| Mar 3, 2019 at 12:33 | comment | added | Autodidact | @peterh I don’t understand your comment about rare gas. Where am I claiming rare gas? | |
| Mar 3, 2019 at 12:31 | history | edited | Autodidact | CC BY-SA 4.0 |
Qualifier added
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| Mar 3, 2019 at 12:17 | comment | added | peterh | @Autodidact No, your question is good! See its voting score, you've got a down and 2 ups. You only have to fix small things what we ask in comments. It has 2 close votes now, but I voted with "leave open". | |
| Mar 3, 2019 at 12:12 | comment | added | Autodidact | I didn’t realize that the perception of space (astronomy related) would end up avoiding the question altogether @Mortensen on a physics technicality, the very argument being used to close down the question. The question was about the earth next to the vacuum of space, what the value of the vacuum is, 10^-17 or 10^-11 or other is not the question, it’s about positive pressure in an open system, not a container (tube) and negative pressure of a vacuum. If this is not astronomy related then why attempt to respond in the first place. My question was not changed in essense | |
| Mar 3, 2019 at 12:06 | history | edited | peterh | CC BY-SA 4.0 |
added 6 characters in body
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| Mar 3, 2019 at 12:04 | comment | added | peterh | I can't really understand, how do you understand "incredibly powerful" to a $10^{-17}$ torr rare gas. Please fix it asap. | |
| S Mar 3, 2019 at 11:05 | history | suggested | Peter Mortensen | CC BY-SA 4.0 |
Copy edited (e.g. ref. <https://en.wiktionary.org/wiki/proport#Verb>). Removed meta information (this belongs in comments, etc.). Dressed the named links.
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| Mar 3, 2019 at 9:55 | review | Close votes | |||
| Mar 4, 2019 at 14:10 | |||||
| Mar 3, 2019 at 9:55 | comment | added | Peter Mortensen | You shouldn't change a question significantly after an answer has been posted. This is not a forum. The proper way is to post a new question. | |
| Mar 3, 2019 at 9:51 | review | Suggested edits | |||
| S Mar 3, 2019 at 11:05 | |||||
| Mar 3, 2019 at 9:37 | comment | added | uhoh | I've voted to close for off-topic because... This question does not appear to be about astronomy, within the scope defined in the help center. This has become clear in a series of comments 1, 2 This is about the physics of the Earth's atmosphere (paraphrasing: why they have them, how gravity keeps them there even though vacuum is pulling at them) not astronomy | |
| Mar 3, 2019 at 7:24 | history | edited | uhoh | CC BY-SA 4.0 |
deleted 8 characters in body
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| Mar 3, 2019 at 7:08 | history | became hot network question | |||
| Mar 3, 2019 at 6:52 | history | edited | Autodidact | CC BY-SA 4.0 |
Added links
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| Mar 3, 2019 at 6:37 | history | edited | Autodidact | CC BY-SA 4.0 |
Refining my question to get a clearer understanding of my question and leave no room for ambiguity
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| Mar 3, 2019 at 6:12 | answer | added | uhoh | timeline score: 6 | |
| Mar 3, 2019 at 5:57 | history | edited | Autodidact | CC BY-SA 4.0 |
Qualifier
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| Mar 3, 2019 at 5:45 | review | First posts | |||
| Mar 3, 2019 at 12:06 | |||||
| Mar 3, 2019 at 5:42 | history | asked | Autodidact | CC BY-SA 4.0 |