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/sci/ - Science & Math


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11847992 No.11847992 [Reply] [Original]

Can we actually visualise or conceptualise 4D space, or is it just a meme?

>> No.11847993

Like, I'd imagine it's like trying to imagine a new colour. You just can't do it.

>> No.11847995

>>11847992
The 4th dimension is time.

>> No.11848091

>>11847992
Sure look at any depiction of a hypercube.

>>11847995
OP asked for 4D space
not 4d spacetime. The latter was made up by sci-fi writer H.G. Wells and doesn't exist

>> No.11848412

>>11847992
>visualize
no, all meme
>conceptualize
sure, easy

>> No.11848414

I once saw a shape of more than 3 dimensions during a waking dream It's indescribable and induced a state of shock and awe.

>> No.11848422

>>11847992
4D is pretty easy imo, but 5D and up I can't visualize at all

>> No.11848435

>>11848091
Time is just space though.

>> No.11848439

>>11848422
you can’t visualize 4d in space

>> No.11848444

>>11848435
>>>/x/

>> No.11848453

>>11848439
Just put an additional axis, that's all.
Things just get more and more rounded.

>> No.11848458

>>11848453
an additional axis where? into 3d space?

>> No.11848460

>>11848458
You put an additional axis, is not 3D anymore

>> No.11848462

>>11848439
brainlet

>> No.11848463

0D: point/singularity
1D: back and forth
2D: north west east south etc.
3D: 2D + up down
4D: in/out (think six cubes in one)

Yes you can extrapolate any dimension mathematically but that's not the point

>> No.11848466

>>11848460
where does the axis that you’re visualizing go? i agree with conceptualize but not with visualize.

>> No.11848477

>>11848462
conceptualizing the trail of a bouncing 3d solitaire card isn’t visualizing 4d space, idiot

>> No.11848483

>>11848463
>in/out
conceptual, not visual
visualizing that is just visualizing expansion and contraction in 3d

>> No.11848492
File: 72 KB, 612x491, 1479729971002.png [View same] [iqdb] [saucenao] [google]
11848492

>>11848466
>>11848483
do you have aphantasia or something?

>> No.11848495

>>11848492
don’t use words you don’t understand, it just makes you sound even dumber

>> No.11848518

>>11848466
It's just like the other axes for me, obviously it can't be described in terms of three dimensional directions but it functions just the same as visualizing a third axis in 2d space
For 5D and up I can only conceptualize and not visualize easily like I can with 4D though, it's like brain has slot for processing one extra dimension but no more than that

>> No.11848519

>>11848495
Not him, but the word was applicable in this case. A 3D representation of a cube on a computer is an accurate representation of a cube, as viewed from 3D space. A 2D representation of a hypercube is an accurate representation of a 4D cube as viewed from 4D space.

>> No.11848524

>>11848519
By 2D here I mean a 3D representation on a computer.

>> No.11848525

>>11848518
you can’t visualize 2d space either, just a vanishingly thin 3d. we may be talking in circles here, but the w axis certainly isn’t anything but conceptual. and neither is the cartesian plane

>> No.11848533

>>11848519
>representation
i.e., conceptual

>> No.11848548

>>11848525
You absolutely can visualize 2D space. You can't physically make 2D space becase it will always have a vanishingly thin thickness, but your ability to visualize things does not have such a constraint. The fact that physical objects representing 2D planes will always be 3D is irrelevant.

>> No.11848577

>>11848548
yeah, talking in circles. you don’t differentiate between visual and conceptual. if you did, you’d have described something like flatland, which was still conceptual but at least tried to adapt the visualization to the concept

>> No.11848627

>>11848577
You are the one talking in circles and making arbitrary criteria for what counts as visualizing versus conceptualizing. Flatland as a 2D space is an intuitive concept to anyone who has drawn on paper before.

>> No.11848633

>it's impossible for humans to form an actual mental image of something, only conceptualize it
>t. aphantasia haver

>> No.11848652

>>11847992
>teacher starts talking about n-dimensional space
>ends with "of course we can't actually visualize -- "
>that one obnoxious student raises hand
>"ACTUALLY, -I- CAN VISUALIZE IT"

every single time

>> No.11848663

>>11848633
I bet he can't jerk off without watching porn. He's the whole reason the coomer meme exists.

>> No.11848680

>>11848627
of course, because when you draw on paper what you see is a 1d horizon of shaded lines, not a 3d view of a 2d plane of my eyes rolling at you.
>>11848633
is there a way to firewall /pol/ posters?

>> No.11848686

>>11848663
>>>/pol/

>> No.11848694

>>11847992
Its the coolest thing in VR i've seen so far

>> No.11848702

>>11848694
https://www.youtube.com/watch?v=shU-oaABFJU
link related

>> No.11849290
File: 134 KB, 432x216, cross-sec.gif [View same] [iqdb] [saucenao] [google]
11849290

>>11847992
>>11848458
>>11848466
The easiest way to visualize 4D is to imagine cross sections - imagine being in a room, and you can move objects along the 4th axis. Your current locations is a single cross section of 4D space.
As you traverse this w axis, the objects you moved would appear and disappear where you placed them.

>> No.11849312

>>11847992
VR is cool for that. There are videos in YouTube.

>> No.11849317

>>11848463
>4D: in/out (think six cubes in one)
It's actually eight. Proving you don't really get it either.

>> No.11849395
File: 343 KB, 1000x1000, Schlegel_wireframe_8-cell.png [View same] [iqdb] [saucenao] [google]
11849395

>>11849317
>eight
Not him but i think i gaained new understanding. If you were you were to count them, you have 1cube in the middle, 6cubes on the walls, AND one outside of the frame? Pic related. 2 cubes for every ax
X, y, z = think the 6 cubes on the walls
W = in and out
In the same way in 3d you have 2 planes(walls of a cube) for each x y z, in 2d 2 lines (borders of square) for each x, y. 1d 2 points on x (ends of a line)

>> No.11849412

>>11847992
>visualise
nope
>conceptualise
absolutely

>> No.11849417

>>11848422
>>11848453
>>11848462
you're imagining a 4d object embedded in 3d space. you can't imagine 4d space just like you can't imagine 2d space, only 2d objects embedded in 3d space

>> No.11849424

>>11849417
to be a bit more precise, you actually see a 2D projection of an object (not necessarily 2D) embedded in a 3D space

>> No.11849482

>>11849395
Six cubes in 4D perspective (those that seem distorted) the one that is further away in the fourth dimension (the "small" one) and the near one (the big "original" one)

>> No.11849486

>>11847995
4U

>> No.11849517

>>11847992
we can't visualize 4D because we live in 2D universe. much like in a video game where your character appears to move in 3 dimensions but never leaves the dimensions of the screen, you never leave the 2 dimensions.

>> No.11849558

>>11848435
Take your meds, lil buddy.

>> No.11850139 [DELETED] 

>>11847992
My interpretation for 4D space is this:

Imagine two people seeing each other in 3D,
spaced 6 feet apart on the x-direction,
in line on the y-direction and standing on
the same z-direction.

Person A wants to leave Person B in a crazy
fashion so A adjusts a LED display on his hat which displays a random real number. At the moment, it matches B's number on his hat.
A adds pi to his number, and just like that, they
no longer see each other even though they
remain as described in 3D.

That is 4D space for you!

>> No.11850143

>>11847992
Imagine two people seeing each other in 3D,
spaced 6 feet apart on the x-direction,
in line on the y-direction and standing on
the same z-direction.

Person A wants to leave Person B in a crazy
fashion so A adjusts a LED display on his hat
which displays a random real number. At the
moment, it matches B's number on his hat.
A adds pi to his number, and just like that, they
no longer see each other even though they
remain as described in 3D.

That is 4D space for you!

>> No.11850155

>>11847992
https://www.youtube.com/watch?v=0AqMb-edXlc

>> No.11850399

>>11850155
Where is the 8th cell?

>> No.11850828
File: 22 KB, 225x225, images (1).jpg [View same] [iqdb] [saucenao] [google]
11850828

>>11847992
If you take a shitton of acid maybe

>> No.11850847
File: 12 KB, 419x354, literalautism.png [View same] [iqdb] [saucenao] [google]
11850847

>>11847992

>> No.11853157

>>11850399
Hidden. It would show up upon rotating inwards.

>> No.11853273
File: 1.28 MB, 640x359, 1498149389-blocks.gif [View same] [iqdb] [saucenao] [google]
11853273

https://store.steampowered.com/app/619210/4D_Toys/

>> No.11853940

You could smoke salvia