Live and recent posts from across the Fediverse tagged #tetrahedron, aggregated by home.social.
Mysterious Structure on Mars Looks Uncannily Like an Ancient Egyptian Pyramid
It would be tempting to assume there’s nothing much of note happening on Mars, but that dusty rusty…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #artificialstructure #artificialstructuresonMars #biologicalstructure #geologicalcontext #interestingstuff #mars #MarsGlobalSurveyor #MarsOrbiter #MarsReconnaissanceOrbiter #Tetrahedron
https://www.newsbeep.com/us/541229/
Pure #CSS #3D demo on @codepen: polyhedra morphing sequence https://codepen.io/thebabydino/pen/abmNveW
Absolutely no magic numbers, everything computed.
See Pen description for the how behind 😼
#transform #cssTransform #polyhedron #cssTransforms #polyhedra #octahedron #tetrahedron #cube #Maths #geometry #cssVariables #code #coding #frontend #web #dev #webDev #webDevelopment
@Labonitamascota
Das Gebäudedesign ist so viel Porsche, wie diese vierseitigen Körper, die nur auf einer Seite stabil liegen, vierseitige Körper sind.
Alright, here come my clickbait titles:
😺🔍 “If you’ve ever wanted to know what’s inside a cat…”
or
🧑🏫👶 “What do mathematicians say when asked: ‘Mom/Dad, what do you actually do all day?’”
https://www.quantamagazine.org/a-new-pyramid-like-shape-always-lands-the-same-side-up-20250625/
I tried to model these origami as transformation between cube and octahedron in Geogebra, but ended up with this instead
#MathArt #geometry #animation #loop #geogebra #tetrahedron #3d
@mrdk @unnick Maybe looks better with the cube visible?
#MathArt #geometry #animation #loop #geogebra #cube #tetrahedron #3d
@mrdk @unnick I'm kind of surprised and not surprised about how the tetrahedron turned out.
#MathArt #geometry #animation #loop #geogebra #tetrahedron #3d
First test print #3D #BambuLabs #P1P #tetrahedron
Today, I learned that some football clubs are using Reuleaux tetrahedrons instead of spherical balls in training to improve goalkeepers' reflexes. https://en.wikipedia.org/wiki/Reuleaux_tetrahedron
Video source: https://x.com/futebol_info/status/1899217444235043025
#Football #FootballClub #FootballClubs #Club #Clubs #Spherical #Reuleaux #Tetrahedrons #Tetrahedron #Ball #Balls #Geometry #Sport #Sports #Soccer #Goalkeeper #Reflex #Reflexes #Training #InterestingPost #Pustam #Raut #Math #Maths #CR7 #LM10 #LeoMessi #LionelMessi #CristianoRonaldo #Ronaldo #FootballTraining #ReflexBall #Messi
Looking to print a painter’s pyramid? These tetrahedrons stand out with geometries fully optimized for flawless 3D printing. Available in 15 heights, from 2 cm to 12 cm (~0.5”–5”).
Find all the details and download here: https://www.printables.com/model/631687
How come we don’t have a less clumsy word for the regular #tetrahedron? 🤔
It’s the simplest of the Platonic solids & is such a symmetric polyhedron. 😍
I mean, we have “pyramid” and “prism” for its siblings, but I’ve only found “triangular pyramid” as a synonym for it. 😒
One day, one decomposition
A051677: Tetrahedron-tree numbers: a(n)=sum(b(m),m=1..n), b(m)=1, 1,3, 1,3,6, 1,3,6,10,..., 1,2,...,i*(i+1)2
3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Tetrahedron-tree_numbers.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Tetrahedron-tree_numbers.html
#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #numbers #tetrahedron #tree #graph #threejs #webGL
An here, another loop with the 3d-printed painter's tetrahedrons. 😆
Finally managed to snap some shots of various test prints of the painter's tetrahedron.
https://www.printables.com/model/631687
Oddly enough, my camera can't quite grasp the neon-orange hue of the 80mm version—it's as if the color is too vibrant for the sensor.
The #pentachoron or #pen, also commonly called the #5_̶cell or #4_̶simplex, is the simplest possible non-degenerate polychoron. The full-symmetry version has 5 regular tetrahedra as cells, joining 3 to an edge and 4 to a vertex, and is one of the 6 convex regular polychora. It is the 4-dimensional simplex. In addition, it can also be considered to be the regular-faced pyramid of the #tetrahedron, or the pyramid product of a triangle and a dyad. This makes it the simplest segmentochoron as well, and it is designated #K_̶4.1 in Richard Klitzing's list of convex segmentochora. It is also the 5-2 step prism and gyrochoron. In geometry, the #5_̶cell is the convex 4-polytope with the Schläfli symbol {3,3,3}. It is a 5-vertex 4-dimensional object bounded by five tetrahedral cells. It is also known as a #C5, #pentachoron, #pentatope, #pentahedroid, or #tetrahedral_pyramid. Again, it is the 4-simplex (Coxeter's α 4 {\displaystyle \alpha _{4}} polytope), the simplest possible convex 4-polytope, and is analogous to #the_tetrahedron in three dimensions and #the_triangle in two dimensions. The #5_̶cell is a 4-dimensional pyramid with a tetrahedral base and four tetrahedral sides.The regular #5_̶cell is bounded by five regular tetrahedra, and is one of the six regular convex 4-polytopes (the four-dimensional analogues of the Platonic solids). A regular #5_̶cell can be constructed from a regular tetrahedron by adding a fifth vertex one edge length distant from all the vertices of the tetrahedron. This cannot be done in 3-dimensional space. The regular #5_̶cell is a solution to the problem “Make 10 equilateral triangles, all of the same size, using 10 matchsticks, where each side of every triangle is exactly one matchstick, and none of the triangles and match sticks intersect one another” (again: no solution for this exists in three dimensions).
@Apotheiite
The #tetractys, when we advance its dimensional complexity from 0 to 3, ends in the #tetrahedron. When we advance it once more (pictured in following tweet) to get the 4th dimension, we have the #pentachoron.
@Apotheiite
The #tetractys, when we advance its dimensional complexity from 0 to 3, ends in the #tetrahedron. When we advance it once more (pictured in following tweet) to get the 4th dimension, we have the #pentachoron.
Some #TwinPeaks moment (flickering lights) in the kitchen — only the sirring noise is missing — bzzzz bzz bzzzz
The wife and I finished S1 of 1899 last night. Really enjoyed it! I feel like #Dark S1 was better, but this show has the potential to be better overall if it clears up more things in the future instead of becoming more and more layers of complexity.
My only gripe is that they contaminate the #triangle / #tetrahedron goodness with fake news #pyramid cameos. 😤
🔭
https://www.quantamagazine.org/asymmetry-detected-in-the-distribution-of-galaxies-20221205/
This is more interesting than the headline, certainly if you like #cosmology or care about massive #symmetry violations!
#universe #astronomy #science #bigbang #parity #physics #forces #antimatter #tetrahedron
I almost forgot to post this: https://www.youtube.com/watch?v=rNaDchuGutQ
It’s my #video #review of episode 4 of #classic #DoctorWho story, the #AbominableSnowmen
It’s not that often I try and explain the difference between a #Tetrahedron and a #pyramid!
#DrWho #SecondDoctor #PatrickTroughton
I hope my fellow #Whovians enjoy it
And the rad tetra #geometric #mathart #Tetrahedron #geometry #3dart #geometricart #art #symmetry #opticalillusions #opart made of " #radial #circles "
#mathsart #moirePattern #tetrahedrons #tetrahedra #polyhedrons
Next in the queue, a #tetrahedron. The Missus will get this for Christmas. The welds are capped with copper brazing, though you can't tell in this image. I'll give it a good polish this weekend.
