Difference between revisions of "Talk:3136: Pull"

Explain xkcd: It's 'cause you're dumb.
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I found that "Each day, around 90 tonnes of hydrogen and helium escape from Earth in the direction of space" https://www.snf.ch/en/2QLt6mvuU4hZj1yx/news/leaking-atmospheres-seal-the-fate-of-planets
 
I found that "Each day, around 90 tonnes of hydrogen and helium escape from Earth in the direction of space" https://www.snf.ch/en/2QLt6mvuU4hZj1yx/news/leaking-atmospheres-seal-the-fate-of-planets
 
[[User:Maofgf|Maofgf]] ([[User talk:Maofgf|talk]]) 19:10, 2 September 2025 (UTC)
 
[[User:Maofgf|Maofgf]] ([[User talk:Maofgf|talk]]) 19:10, 2 September 2025 (UTC)
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It should be "centripetal", not "centrifugal". [[User:Inquirer|Inquirer]] ([[User talk:Inquirer|talk]]) 20:40, 2 September 2025 (UTC)

Revision as of 20:40, 2 September 2025

Australia reference????? /s TheTrainsKid (talk) 05:41, 2 September 2025 (UTC)

I recently learned that earth has weird gravity effects caused by a big moon orbiting near the surface. These are probably also barely measurable, except e.g., big bodies of water --134.102.219.31 11:23, 2 September 2025 (UTC)

I take it you haven't heard of Earth tides? [1] --Gorcq (talk) 11:54, 2 September 2025 (UTC)
Perhaps you should follow the link in the comment you replied to... Yorkshire Pudding (talk) 13:00, 2 September 2025 (UTC)
Ya the hemispheres are kinda crazy《プロキシ》(XKCD中毒者) 13:07, 2 September 2025 (UTC)

So I'm not qualified to critique this, but, I think the comic is referencing an unsolved problem - is gravity constant over time? I'm not a physicist and I'm not conversant with the literature, but I think there is some debate on the matter. The line 'give it another five minutes' definitely seems like a humorous reference to the idea that the gravitational constant might changes over age-of-the-universe timescales. Hence I suspect the description talking about earth's attraction specifically misses the point. --DW 2607:FB90:8FA9:E54A:5856:AACD:B913:6DD8 13:44, 2 September 2025 (UTC)

Judging from the amount of rotation, the conversation takes place over a period of several hours. -2603:8080:2AF0:F1E0:39BF:23FC:411E:363B 18:58, 2 September 2025 (UTC)

Someting seams wrong with the number in the statement "The net effect of these is for Earth to lose about 520 tons in the 5-minute period". I found that "Each day, around 90 tonnes of hydrogen and helium escape from Earth in the direction of space" https://www.snf.ch/en/2QLt6mvuU4hZj1yx/news/leaking-atmospheres-seal-the-fate-of-planets Maofgf (talk) 19:10, 2 September 2025 (UTC)

It should be "centripetal", not "centrifugal". Inquirer (talk) 20:40, 2 September 2025 (UTC)