We've never seen anything 2 dimensional. Everything we can see has some form of all 3 dimensions in it. Even shadows are 3 dimensional. We conceptualize them as 2 dimensional on a wall, but they have depth. (Think of how when you see a line it's actually 2 dimensional due to the width of the line, then apply that concept to depth as well)
A shadow is not the same as a line drawn by a pencil. And a 2d line can be for example the contrast of two colours, the "line" that delimits an object from your perspective - these are no drawn lines with any width, they are not there as full 3d objects. I would think a shadow is a similar case, just as a film projection. It has no thickness.
Well shadows are the absence of light, so defining them is a little weird, but they exist the entire distance from where the light source is interrupted to where they are projected on, same with projections, it's not just what's on the screen, but the light the whole way to the screen.
Even ignoring that, the surface that a projection lands on has texture and depth.
Well, you can definitely ignore that and just take thw projection and view it as something 2d. The fact that the surface is structured doesn't mean the projection is not 2d - it is 2d curved in the 3d dimension, just like a 1d line can be curved without gaining any thickness. Just like our 3d space is curved.
If you look at a sheet of paper on edge, you can see a poor man's representation of one dimension, while hiding an additional dimension, made in the only way you can actually have a thing to hold with yet one more
Edit: make guillotines great again, or whatever the tesseract deems uncouth
A tesseract is a 3 dimensional representation of a 4 dimensional body. The fact that a tesseract has to be animated to show all of its 4 dimensional vertices in 3 dimension is an act of shaming 3 dimensional space for being "less than". Frankly, I don't stand for this type of body shaming.
36 Comments
HyperCube@fedia.io · 79 pts · 27d
bad day to have chosen this username ig :(
db2@lemmy.world · 21 pts · 27d
https://en.wikipedia.org/wiki/Cube_2:_Hypercube
jaybone@lemmy.zip · 13 pts · 26d
2 Fast 2 Cubicle
flamingo_pinyata@sopuli.xyz · 10 pts · 26d
2 girls, 1 cube
pticrix@lemmy.ca · 2 pts · 26d
The tie-in game was awesome.
HeyThisIsntTheYMCA@lemmy.world · 1 pts · 26d
1 not fast enough 1 line: the preboot
daggermoon@piefed.world · 2 pts · 26d
It's a dope ass username.
partial_accumen@lemmy.world · 51 pts · 27d
Please read the sidebar rules before posting. Posts to this Lemmy community must be exclusively represented in 3 dimensional space.
Gutek8134@lemmy.world · 32 pts · 27d
Technically speaking, all images are 2d projections
jaybone@lemmy.zip · 12 pts · 26d
YOUR MOMS BRA SIZE IS A 2D PROJECTION
EmpathicVagrant@lemmy.world · 8 pts · 26d
Well yeah, that’s how it fits on the tag.
Hazmatastic@lemmy.world · 11 pts · 26d
And this is a 2d projection of a 3d projection of a basic 4d shape that we literally cannot comprehend
MonkderVierte@lemmy.zip · 2 pts · 26d
It's not. The walls shown here are impossible, get clipped, but the shape itself is 3D.
village604@adultswim.fan · 1 pts · 26d
No, they're right. A gif is a 2d projection of a 3D shape. The 3D shape that's being projected is itself a projection of a 4D shape.
RogueBanana@piefed.zip · 1 pts · 26d
Don't know what you are talking about. I can perfectly comprehend it, it's a gif with moving colours.
Siethron@lemmy.world · 5 pts · 26d
We've never seen anything 2 dimensional. Everything we can see has some form of all 3 dimensions in it. Even shadows are 3 dimensional. We conceptualize them as 2 dimensional on a wall, but they have depth. (Think of how when you see a line it's actually 2 dimensional due to the width of the line, then apply that concept to depth as well)
angrystego@lemmy.world · 2 pts · 26d
A shadow is not the same as a line drawn by a pencil. And a 2d line can be for example the contrast of two colours, the "line" that delimits an object from your perspective - these are no drawn lines with any width, they are not there as full 3d objects. I would think a shadow is a similar case, just as a film projection. It has no thickness.
Siethron@lemmy.world · 1 pts · 26d
Well shadows are the absence of light, so defining them is a little weird, but they exist the entire distance from where the light source is interrupted to where they are projected on, same with projections, it's not just what's on the screen, but the light the whole way to the screen.
Even ignoring that, the surface that a projection lands on has texture and depth.
Buddahriffic@lemmy.world · 2 pts · 26d
A shadow is a 2d projection of a 3d object projected back onto 3d space.
angrystego@lemmy.world · 1 pts · 24d
Well, you can definitely ignore that and just take thw projection and view it as something 2d. The fact that the surface is structured doesn't mean the projection is not 2d - it is 2d curved in the 3d dimension, just like a 1d line can be curved without gaining any thickness. Just like our 3d space is curved.
partial_accumen@lemmy.world · 3 pts · 27d
Two dimensional projections can be represented in three dimensional space. Even single dimensional entities are welcome here.
Tyrq@lemmy.dbzer0.com · 4 pts · 26d
If you look at a sheet of paper on edge, you can see a poor man's representation of one dimension, while hiding an additional dimension, made in the only way you can actually have a thing to hold with yet one more
Edit: make guillotines great again, or whatever the tesseract deems uncouth
MonkderVierte@lemmy.zip · 6 pts · 26d
But tesseract is in 3-dimensional space.
partial_accumen@lemmy.world · 8 pts · 26d
A tesseract is a 3 dimensional representation of a 4 dimensional body. The fact that a tesseract has to be animated to show all of its 4 dimensional vertices in 3 dimension is an act of shaming 3 dimensional space for being "less than". Frankly, I don't stand for this type of body shaming.
webp@mander.xyz · 23 pts · 26d
The toxicity of our city
sundray@lemmus.org · 12 pts · 26d
Disorder
cyberpunk007@lemmy.ca · 8 pts · 26d
Disorder
MeowerMisfit817@lemmy.world · 6 pts · 26d
Disorder
iamthetot@piefed.ca · 21 pts · 27d
32edgy34me
FirmDistribution@lemmy.world · 2 pts · 26d
Where's the 33?
Mods, ban this person.
db2@lemmy.world · 15 pts · 27d
I should call her.
magnolia_mayhem@lemmy.world · 11 pts · 27d
I'm out of the loop on this one
Carl@anarchist.nexus · 13 pts · 27d
The post is very edgy
Grimy@lemmy.world · 12 pts · 27d
https://lemmy.world/post/49778353
jaybone@lemmy.zip · 3 pts · 26d
It’s like beans, but worse. And it never seems to stop.
BlackLaZoR@lemmy.world · 7 pts · 26d
That's just overkill you could just post square with 0.5° corner misalignment