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[-] Hotzilla@sopuli.xyz 19 points 5 months ago

For "a sec" might probably be more like "a nano sec"

[-] Perfide@reddthat.com 21 points 5 months ago

The neat thing about black holes is the process would be both instantaneous and take literally eternity, depending on one's perspective.

[-] Sasha@lemmy.blahaj.zone 4 points 5 months ago

Depends on the size of the black hole.

Really big ones can let you live for a surprisingly long time. (Not going to quote any numbers because I'm not completely sure of them any more)

Bigger black holes become more and more gentle.

[-] unexposedhazard@discuss.tchncs.de 12 points 5 months ago* (last edited 5 months ago)

~~I know this is a joke, but i think the idea is that you would only look stretched to outside observers, but you yourself actually wouldnt perceive any stretching going on.~~


Looks like i misremembered that one.

Timestamp to relevant Kurzgesagt section: https://www.youtube.com/watch?v=QqsLTNkzvaY&t=217

[-] botterotter@lemm.ee 18 points 5 months ago* (last edited 5 months ago)

I think you literally stretch; the part of you that touches the horizon line first experiences infinite gravity, while the parts of you outside the horizon line don't, so you're getting stretched out as the parts inside the horizon line fall in much faster

Edit: read the reply to my comment, they're probably more right than me lol

[-] Sasha@lemmy.blahaj.zone 11 points 5 months ago* (last edited 5 months ago)

No, that's not the case at all.

If you fall into a black hole, you can do no experiment to detect the horizon, it's a completely unremarkable region of space to you. Infinite gravity is only really a thing at the singularity, but that's almost definitely just because our theoretical models breakdown and stop giving accurate descriptions of reality there.

The stretching is just because of tidal forces, which means that gravity gets so much stronger closer to the black hole that your feet are pulled harder than your head, you experience the same thing standing on earth, it's just that the change in gravity is basically negligible here.

Source: Was a black hole physicist for a while

Small edit: Tidal forces stretch you in the exact same way that they stretch the ocean, thus creating ocean tides.

Read this in Stephen Hawking's voice

[-] thatsTheCatch@lemmy.nz 11 points 5 months ago

It is literally stretch because the difference in gravity at your feet would be much stronger than the gravity at your head, pulling you apart

[-] unexposedhazard@discuss.tchncs.de 3 points 5 months ago

Thanks for the correction. Added a timestamped youtube kurzgesagt link to my comment for anyone interested.

So it would feel good, then bad, then nothing, all within an immeasurably short amount of time.

[-] thatsTheCatch@lemmy.nz 3 points 5 months ago

To you, yes, but to outside observers it would last a very, very long time ๐Ÿ™ˆ

[-] Twinkletoes@lemm.ee 9 points 5 months ago

I could use some backcrackification right about now

[-] Kolanaki@yiffit.net 6 points 5 months ago

I wanna go in feet first so I can finally get that one spot in my lower back to pop.

this post was submitted on 05 Jun 2024
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