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/sci/ - Science & Math

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File: 29 KB, 438x287, illus_3dspace1.jpg [View same] [iqdb] [saucenao] [google]
7090634 No.7090634 [Reply] [Original]

If space-time were to be suddenly flattened around you in a say 3 meter sphere, what would happen to you?

>> No.7090642

Nothing

>> No.7090653

>>7090642
Really? No weird time dilation or acceleration effects?

>> No.7090665

Chances are you'd be flatttened too.

I.E.: reduced to ground state, cease to exist

>> No.7090672

>>7090634
space time is flat in the observable universe, OP, so not a lot.

>> No.7090702

>>7090634
you would become weightless and float

gravity is caused by the curvature of space-time, but of course the air and furniture you're surrounded by will stay put so you're not gonna fly off into space at high speed or some shit

>> No.7090705

>>7090672
only on a giant cosmological scale

>> No.7090714

Space-Time is locally flat as it is, so literally nothing would change.

>> No.7090731

>>7090705
If space-time were curved locally there would be visible horizon effects, among other things.

>> No.7090735

>>7090702
fucking lol.

is this how you visualize spacetime? did somebody teach this to you?

please god no.

>> No.7090751

>>7090634
I would assume that because you're a point in space/time A coordinate if you will, you'd shrink with it. There's NOTHING separating you from the rest of the universe.

>> No.7090754

>>7090751
that's true but such a disturbance to the scalar field may drop you into a lower potential, the results of which I don't know

>> No.7090756

>>7090735
>>7090731
>>7090714
um you're really all wrong

It is true that spacetime is locally flat, but the reason that is said is like how if you zoomed in really really close on a sphere it would still look flat eventually. So we just look at infinitesimal distances and it looks flat. But it's still an approximation. Space is curved or we would not experience gravity. On a big scale it's nothing, but our little 9.8 m/s^2 acceleration over this tiny area of the universe is quite noticeable to us obviously.

the approximation is valid when saying 'a light beam moving across 3m of our curved space won't bend noticeably' because the curvature is gradual over such a small area, but its not valid when you have a sudden jump from curvature to "flatness". Like in this image imagine suddenly having a horizontal piece of space in the 'dip' jutting out -- it's no longer locally flat when you have a piecewise thing like that

>> No.7090759
File: 846 KB, 1200x884, GPB_circling_earth.jpg [View same] [iqdb] [saucenao] [google]
7090759

>>7090756
forgot image

>> No.7090763

>>7090756
What an oversight!
I guess in that case you'd be ejected from the top of the flat bubble due to the normal force, be accelerated back into it and continue bouncing around until equilibrium was reached.

>> No.7090764
File: 39 KB, 590x629, prof-albert-einstein.jpg [View same] [iqdb] [saucenao] [google]
7090764

>>7090756
>um you're really all wrong

um how can I be wrong when I didn't propose anything, I only laughed at that concept?

I get everything you're saying, but the implications of what you're saying mean that we actually know how gravity and time work.

big problem dip shit, we have only speculated gravity. it may have CARDINAL relations to time, and you'd win a fucking nobel to PROVE otherwise, not just play pretend physicist.

>> No.7090769

>>7090634
That is a shit representation of curved space-time.

>> No.7090774

ω = -1 ± 0.02

Space is flat.

>> No.7090776

>>7090774
lol, no matter exists with such an equation of state

>> No.7090795
File: 5 KB, 184x184, 1402949977108.jpg [View same] [iqdb] [saucenao] [google]
7090795

>>7090776

>> No.7090801

>>7090764
UM albert pls, im only assuming basic GR concepts which have passed all tests. We may not know shit about gravity at more fundamental levels, but that's not necessary to apply a successful model to a piece of theoretically flat spacetime. Even classical mechanics works in the right situations

>> No.7090802

>>7090776
>no matter exists with such an equation of state

I'm calling the feds on you.
>FEDORAls that is

>> No.7090820

>>7090801
well in that cause, I suppose I have an issue with the theory and the mathematical proof, not your, or anyone elses understanding of it.

sincerest apology.

>> No.7090836
File: 1.92 MB, 300x259, girl horse.gif [View same] [iqdb] [saucenao] [google]
7090836

>>7090820
aw no need to apologise
<3

>> No.7092431

>>7090731
>>7090714
I always assumed space-time was locally curved due to the local large masses, Earth, and only flat on cosmological scales. I mean, we know that there is at least some curvature due to the time difference between satellites and the surface of the Earth. I had assumed a sudden flattening of space time in your local vaccinity would cause your space-time coordinates to become out of whack with those around you, comparitivily.

>> No.7092461

>>7090836
I had to google that girl because I thought that was fake.

>> No.7092476

>>7090634
Spacetime is multidimensional its impossible to fathom what exactly it looks like.