No. He shows how non euclidean (sferical) space translates to euclidean (flat) space. Description is bullshit.
3D Print some math.
Submitted 2 months ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/e0326fa9-d5a7-4290-92d7-40d82a37915b.png
Comments
BlackLaZoR@lemmy.world 2 months ago
DragonTypeWyvern@midwest.social 2 months ago
What if I were to tell you you’re supposed to extrapolate the concept instead of taking it absolutely literally?
BlackLaZoR@lemmy.world 2 months ago
There’s nothing to extrapolate here. The description is BS. There’s no such thing as ‘linear plane’ there’s a flat plane and curved plane (with positive and negative curvatures). There’s a thing called linear algebra but it’s not the same. Also planes are 2 dimensional spaces. When you have more dimensions name ‘plane’ doesn’t apply. If you extrapolate BS you’ll get even more BS
Soup@lemmy.world 2 months ago
There is the cool idea of showing how different dimensions, in our situation where fully visualizing a fourth dimension is fundamentally impossible, could potentially look. Like, yes this is obviously not going to show us a fourth dimension but looking at how a 2D plane can actually be a 3D space if you have the capacity to see it is kinda neat. It’s as close as most people are going to get to visualizing a fourth dimension.
You’re so focused on how this isn’t a literal representation of something fundamentally impossible to represent that you forgot to exercise your imagination even a little bit.
wrinkle2409@lemmy.cafe 2 months ago
That’s just a stereographic projection wtf are you on about
grau0wl@lemmy.world 2 months ago
Can I buy this chandelier?
Trex202@lemmy.world 2 months ago
In the Beyond section of Bed Bath and Beyond
ChaoticNeutralCzech@feddit.org 2 months ago
Oh yes, a 4D print casting a 3D shadow
BigBenis@lemmy.world 2 months ago
Isn’t “3rd dimensional plane” an oxymoron?
AnarchoEngineer@lemmy.dbzer0.com 2 months ago
I mean typically people refer to planes as hyperplanes once you go past 3D, but I’ve definitely heard them just called “planes” too
Hyperplanes are just a generalization of planes to higher dimensions. Often you hear the term when working with vectors because, like in 3D, you can define an n-dimensional hyperplane by a surface normal vector and a point. All lines perpendicular (orthogonal) to that normal vector which pass through the point form the plane.
It’s a useful concept and since we already have a word for that kind of structure in 3D space we just use the same term for it in other dimensions
traxex@lemmy.dbzer0.com 2 months ago
Hmmm. I don’t think so but I do think it is incorrectly used here. To me, the 3rd dimensional plane would just be the z axis. If you were talking about the entire 3D shape which they are here, I would just say 3rd dimension.
RevolverSly@lemmy.world 2 months ago
So, Earth is actually flat
DarkSurferZA@lemmy.world 2 months ago
when described in a Euclidean manner, yes
justme@lemmy.dbzer0.com 2 months ago
In euclidian metric (which we usually use) it’s not, in spherical it is.
lengau@midwest.social 2 months ago
I thought it was carbonated?
58008@lemmy.world 2 months ago
This is like me laying naked on my back with an erection and saying the shadow cast by the sun is a complex timekeeping device.
timeghost@lemmy.world 2 months ago
Neat. How does this help me violate causality or skip over to a different planet? “Scientists discover we are trapped in an even deeper infinite fractal of hell from which there is no escape.”
OpenStars@piefed.social 2 months ago
Um, hypothetically speaking, for a ah friend, if I wanted to STOP slipping into the ever deepening abyss of further levels of hell, how might I, oh I mean my friend, accomplish this?
BanMe@lemmy.world 2 months ago
That’s the main timeline you’re experiencing, it’s totally normal
TherapyGary@lemmy.dbzer0.com 2 months ago
His full presentation on this:
craigers@lemmy.world 2 months ago
Found the 3d print file for those interested
Silic0n_Alph4@lemmy.world 2 months ago
Will it work on my 4d printer or will I have to project it down to 3d first?
Sylvartas@lemmy.dbzer0.com 2 months ago
Make sure it has enough time filament to load a snapshot from the past and still print in the present.
Tetragrade@leminal.space 2 months ago
yapping alert
Zerush@lemmy.ml 2 months ago
Next an Tesseract dice
BodyBySisyphus@hexbear.net 2 months ago
m3t00@lemmy.world 2 months ago
got xmas ornaments do that 🪩
CannonFodder@lemmy.world 2 months ago
Seems to me like it’s demonstrating the projection of a complex three dimensional shape which produces a simple pattern on a two dimensional plane.
Speculater@lemmy.world 2 months ago
thatsthejoke.jpg
But what’s the time equivalent flashlight?!
mathemachristian@lemmy.ml 2 months ago
Manifolds such as these are actually defined by the maps used from a linear space. Two manifolds (i.e. two sets of maps) are considered the same (isomorphic) if the maps of one set can be “morphed” into the other and vice versa.
The flashlight demonstrates how one map is morphed into another.
That’s kind of part of a larger point actually: There is no 3d vector space in reality. It’s a made up construct used to make sense of the world around us.
fossilesque@mander.xyz 2 months ago