/sci/ - Science & Math » Thread #11945544

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Anonymous Tue 28 Jul 07:52:06 2020 No.11945544 View Reply Original Report

Quoted By: >>11945546 >>11945549 >>11945615 >>11945629 >>11945776 >>11946472 >>11946503 >>11946668

Why is universe flat?

Anonymous

Anonymous Tue 28 Jul 2020 07:53:05 No.11945546 Report

Quoted By: >>11945553 >>11945613 >>11949031 >>11951480

>>11945544
>10 spatial dimensions
>flat

Anonymous

Anonymous Tue 28 Jul 2020 07:58:00 No.11945549 Report

Quoted By:

>>11945544
Because your dad creampied your mom.

Anonymous

Anonymous Tue 28 Jul 2020 08:00:02 No.11945553 Report

Quoted By: >>11947123

>>11945546
>A measure of reality that will never be useful nor understandable in a visual sense.
This is what put me off physics.
What evidence and logic do you have to back that up. Sounds like some quantum garbage

Anonymous

Anonymous Tue 28 Jul 2020 08:36:31 No.11945613 Report

Quoted By:

>>11945546
>10 spatial dimensions
proof? you brainlet?

Anonymous

Anonymous Tue 28 Jul 2020 08:37:48 No.11945615 Report

Quoted By: >>11945634 >>11945636 >>11945643

>>11945544
>Why is universe flat?
personal theory, you're free to disprove it:
Spacetime doesn't actually exist. Photons are bent by very high gravity. Einstein was wrong.

Anonymous

Anonymous Tue 28 Jul 2020 08:52:30 No.11945629 Report

Quoted By:

>>11945544
Because it is spinning.

Anonymous

Anonymous Tue 28 Jul 2020 08:54:48 No.11945634 Report

Quoted By:

>>11945615
What is gravity then?

Anonymous

Anonymous Tue 28 Jul 2020 08:55:53 No.11945636 Report

Quoted By: >>11945637 >>11945638

>>11945615
Are you saying photons have mass, and that's why the path they travel is affected by gravity?

Anonymous

Anonymous Tue 28 Jul 2020 08:56:53 No.11945637 Report

Quoted By: >>11945640

>>11945636
>What is gravitational lensing?

Anonymous

Anonymous Tue 28 Jul 2020 08:57:40 No.11945638 Report

Quoted By: >>11945644

>>11945636
>Are you saying photons have mass
maybe, or maybe they can be influenced by gravity even without mass, for some unknown reason.

Anonymous

Anonymous Tue 28 Jul 2020 08:58:43 No.11945640 Report

Quoted By:

>>11945637
>What is gravitational lensing?
Gravity directly influencing the trajectory of photons.

Anonymous

Anonymous Tue 28 Jul 2020 09:05:02 No.11945643 Report

Quoted By: >>11945647

>>11945615
so how is this different from einstein

Anonymous

Anonymous Tue 28 Jul 2020 09:05:26 No.11945644 Report

Quoted By: >>11950458

>>11945638
I'm just not sure what you are implying. One of the first proofs of relativity was viewing "bent" photons. They were able to observe a star that was behind the sun because its gravity bent spacetime around it.

Anonymous

Anonymous Tue 28 Jul 2020 09:08:06 No.11945647 Report

Quoted By: >>11945652 >>11945653

>>11945643
photon trajectory change is not caused by some weird spacetime bending by high mass but simply by the effect of gravity on single photons. Time and space are related but not one single thing.

Anonymous

Anonymous Tue 28 Jul 2020 09:10:44 No.11945652 Report

Quoted By: >>11945657

>>11945647
so photons have mass

Anonymous

Anonymous Tue 28 Jul 2020 09:11:12 No.11945653 Report

Quoted By: >>11945655

>>11945647
>photon trajectory change is not caused by some weird spacetime bending by high mass but simply by the effect of gravity on single photons
okay but what is the actual difference here

Anonymous

Anonymous Tue 28 Jul 2020 09:12:01 No.11945655 Report

Quoted By: >>11945659

>>11945653
the relationship between space and time

Anonymous

Anonymous Tue 28 Jul 2020 09:13:20 No.11945657 Report

Quoted By: >>11945663

>>11945652
maybe, but not necessarily.
maybe gravity can affect also some particles without mass.With an extremely smaller magnitude than objects with mass.

Anonymous

Anonymous Tue 28 Jul 2020 09:13:58 No.11945659 Report

Quoted By: >>11945671

>>11945655
so you believe in Galilean spacetime ?

Anonymous

Anonymous Tue 28 Jul 2020 09:15:05 No.11945663 Report

Quoted By: >>11945680

>>11945657
so what makes a massless particle affected by gravity different from a particle with a very small mass

Anonymous

Anonymous Tue 28 Jul 2020 09:18:27 No.11945671 Report

Quoted By: >>11945686

>>11945659
it doesn't seem much better than Einstein's model. Is there any proof? Maybe time doesn't exist at all. It is a concept created by our brains.

Anonymous

Anonymous Tue 28 Jul 2020 09:21:34 No.11945680 Report

Quoted By:

>>11945663
some internal characteristics? magnetic spin? some unknown property?

Anonymous

Anonymous Tue 28 Jul 2020 09:24:16 No.11945686 Report

Quoted By:

>>11945671
excuse me, but how much physics do you actually know? do you understand Galilean spacetime mathematically? do you know what Galilean transformations are? do you understand Minkowski spacetime mathematically? do you know what Lorentz transformations are?

Anonymous

Anonymous Tue 28 Jul 2020 09:28:35 No.11945692 Report

Quoted By: >>11945706

>>1194568
I know what geometric transformations are, no formal physics education tho, above chemical engineering.
all these mathematical structures and models could be misguiding us and not being representative of actual and full reality.

Anonymous

Anonymous Tue 28 Jul 2020 09:37:00 No.11945706 Report

Quoted By: >>11945716

>>11945692
>all these mathematical structures and models could be misguiding us and not being representative of actual and full reality.
obviously this is true and nobody claims otherwise, the thing is that you're not really in a position to make the call if you don't understand the models in the first place. how can you tell whether Einstein is wrong if you don't know what he's saying?

Anonymous

Anonymous Tue 28 Jul 2020 09:39:53 No.11945716 Report

Quoted By: >>11945976

>>11945706
>the thing is that you're not really in a position to make the call
oh please stop appealing to authority, everyone knows what a 4D or 3+1D transformation is based on. It's still a model. We have no proof that time exists and is intimately tied to space in the first place.

Anonymous

Anonymous Tue 28 Jul 2020 10:20:10 No.11945774 Report

Quoted By: >>11945778

Friendly reminder that their is no proof for speed of light being constant. Just because our current technology cannot measure the differences, you don't have to believe this axiom Einstein pulled out of his arse.

Anonymous

Anonymous Tue 28 Jul 2020 10:20:30 No.11945776 Report

Quoted By:

>>11945544
inflation
it stretched a proton to 2/3*AU in 1E-32 seconds
that flattens the curve

Anonymous

Anonymous Tue 28 Jul 2020 10:21:33 No.11945778 Report

Quoted By:

>>11945774
falsify it bigboi

Anonymous

Anonymous Tue 28 Jul 2020 12:32:54 No.11945976 Report

Quoted By:

>>11945716
>It's still a model.
everything in physics is a model, including "space" and "time"

Anonymous

Anonymous Tue 28 Jul 2020 15:40:34 No.11946472 Report

Quoted By: >>11950381

>>11945544
Because god loves all things flag
*insert loli picture here*

Anonymous

Anonymous Tue 28 Jul 2020 15:52:48 No.11946503 Report

Quoted By: >>11946664

>>11945544
>the universe is flat
We will never know if it's flat for sure, at least not by measuring curvature
also
>hubble Constant
>constant
pick one

Anonymous

Anonymous Tue 28 Jul 2020 16:50:46 No.11946664 Report

Quoted By:

>>11946503
The Hubble Constant is the present day value of the Hubble parameter.

Anonymous

Anonymous Tue 28 Jul 2020 16:51:46 No.11946668 Report

Quoted By: >>11946899 >>11946965

>>11945544
jews like to corner people, if it was spheric they wouldnt be able to

Anonymous

Anonymous Tue 28 Jul 2020 18:07:08 No.11946899 Report

Quoted By:

>>11946668
fuck off back to >>>/pol/

Anonymous

Anonymous Tue 28 Jul 2020 18:35:19 No.11946965 Report

Quoted By: >>11947975

>>11946668
an infinite flat expanse doesn't have any corners either, dum dum

Anonymous

Anonymous Tue 28 Jul 2020 19:25:13 No.11947123 Report

Quoted By:

>>11945553
>>A measure of reality that will never be useful nor understandable in a visual sense.
it's a good thing we dont listen to you or otherwise flash memory wouldnt exist

Anonymous

Anonymous Tue 28 Jul 2020 23:29:57 No.11947975 Report

Quoted By: >>11948008

>>11946965
>an infinite flat expanse
Not possible

Anonymous

Anonymous Tue 28 Jul 2020 23:38:09 No.11948008 Report

Quoted By: >>11948030

>>11947975
why not

Anonymous

Anonymous Tue 28 Jul 2020 23:50:17 No.11948030 Report

Quoted By: >>11948039 >>11950388

>>11948008
Because it doesn't make sense.

Anonymous

Anonymous Tue 28 Jul 2020 23:52:41 No.11948039 Report

Quoted By:

>>11948030
it doesn't make sense to you? your own stupidity is not much of an argument

Anonymous

Anonymous Wed 29 Jul 2020 06:02:39 No.11949031 Report

Quoted By:

>>11945546
these aren't in any way mutually exclusive

Anonymous

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Anonymous Wed 29 Jul 2020 18:23:20 No.11950381 Report

Quoted By:

>>11946472
>flat is justice!

Anonymous

Anonymous Wed 29 Jul 2020 18:26:42 No.11950388 Report

Quoted By:

>>11948030
>I'm to stupid too understand so it must be false

Anonymous

Anonymous Wed 29 Jul 2020 18:44:06 No.11950444 Report

Quoted By:

The universe is kinda flat on average because there isn't that much mass around to bend it.

Anonymous

Anonymous Wed 29 Jul 2020 18:47:28 No.11950458 Report

Quoted By: >>11950466

>>11945644
I think it's pretty proven that gravity depends not just on mass but also on kinetic energy (which photons do have). But is a bent spacetime really the only way to explain that?

Anonymous

Anonymous Wed 29 Jul 2020 18:50:29 No.11950466 Report

Quoted By:

>>11950458
(according to) https://en.wikipedia.org/wiki/Energy%E2%80%93momentum_relation

Anonymous

Anonymous Thu 30 Jul 2020 00:58:55 No.11951480 Report

Quoted By:

>>11945546
Do you know what flat means in this context

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