Thursday, February 15, 2024

Geometry Links - February 15, 2024

 Music box Moëbius strip of Erik Satie’s Gymnopedie 1
hat tip to Cory Doctorow

Bradford Hansen-Smith’s new book, the Circle: a wholemovement perspective, is now available, documenting is further explorations of geometry in folding the circle

Geek Mom’s LED light

Trace Loops paper animation
hat tip

Greek village where every house is decorated with geometric figures

National Museum of Mathematics has online courses:  for instance, topological crochet

Lanny Smoot’s omnidirectional floor

Golden Ratio Tetra Spiral
hat tip David Brian Koski

Some geometric models from Rinus Roelof

Sponge spicules - a biologist friend mentioned them on Facebook and I took a look.  Very interesting structural component system(s)
Hat tip to Manda Clair

Armenian alphabet also a numerical system for mathematics

Improved one corner balancing cube
hat tip
From Geometry Links:
Cubli - a cube that can balance, jump, and walk

Sunday, December 17, 2023

Geometry Links - December 17, 2023

 Matt Brand’s specular holography - specular holography and rhombiyurts
hat tip 10/4/23

Tawa portable wood art game

Stained Glass Smash - online app that creates geometric art by simulating smashing glass
hat tip:

Siena Galaxy Atlas 2020

Pisano quilts
Editorial Comment:  Any Peano curve quilts?

Following Albrecht Dürer’s 1525 geometric net:  snubcube and its dual

Slow motion splash geometries

Pull-up patterned polyhedra: Platonic Solids for the classroom
printable templates:
hat tip Karl Thidemann

Nepali mokha art on the verge of disappearing

Optical illusion - illusory yellow

Heartbreaking: Local quadratic polynomial as a function of x struggling to fit constantly rotating data

Ncube - generalized hypercube visualizer
hat tip

Wednesday, October 4, 2023

Geometry Links - October 4, 2023

 Pneuhaus - inflatable sculpture
hat tip

Antique book patterns of front or end papers from 1890-1930, ordered by theme, by Bergen Norway Public Library

Minimalist movie posters
hat tip

Spectrolite is a Mac app which does color separation, halftoning, posterizing, layouts for art prints, zine and booklet imposition, and a bunch of other fun things
hat tip

Early [1.4 million years ago] human ancestors turned stones into spheres on purpose, study suggests

Daniel Agdag’s cardboard sculptures

Octet_8_in_1 by Joe Clinton

Thomas Burgess’ adventures in geometry

InfiniteX Dodecahedron programmable art light

Indian Tribal Tattoos
Aipan Art

Disaster relief bed - simple geometry that may have a deep impact

Ancient Egyptian mathematics and geometry

Saturday, August 26, 2023

Geometry Links - August 26, 2023

 Soundweaving - Hungarian embroidery patterns into music for music boxes

Lightning spectacle

The inventor of the spirograph, Denys Fisher, invents again (1977)
hat tip

Illustrations of various strains of pollen in extreme magnification, as featured in Ueber den Pollen (1837), a book by St. Petersburg based German pharmacist and chemist Carl Julius Fritzsche.⁠
hat tip

Houston will have a net energy positive public artwork, Arco del Tiempo, or Arch of Time, a shape made from the sun’s path
hat tip Leslie Alden

Poetegrity 1. Tensegrity Poetry.

Tauba Auerbach
hat tip

A game of Go on a hyperbolic manifold

Norman Brosterman - artist, curator, collector
author of Inventing Kindergarten
Mentioned in the April 17, 2012 edition of Geometry Links (

On-site growth of perovskite nanocrystal arrays for integrated nanodevices

12000 year old rock paintings in Colombia, tens of thousands of images

Visualizing quantum entanglement of two photons

Sunday, July 2, 2023

Geometry Links - July 2, 2023

 Knitting a glove with a Roman dodecahedron
hat tip 

Best illusions of the year contest videos
hat tip

151 Illusions & Visual Phenomena with explanations
hat tip

Web tool for making Turing Patterns
hat tip, again,

Infinity Octahedron from GeekMomProjects

Chaim Goodman-Strauss’ Math, Art, Stuff
hat tip Edmund Harriss

3D printed spinning origami
hat tip Gwen Fisher

Applying algebra instead of geometry to dynamical systems
hat tip to Michael Bauwens

How to make a spider web
hat tip Joan Mokray

Stencil IQ test
Stenciletto game

Master paper folding mask maker João Charrua
hat tip

Have you seen an octopus do this before?
hat tip  Prof. Steve Austin @postcarbonsteve:
"we live on the most beautiful planet in the universe why are we allowed a few greedy humans to destroy it?"

Wednesday, May 24, 2023

Geometry Links - May 24, 2023

 How to build a tensegrity table
More on tensegrity
hat tip Karl Thidemann

Geometric abstractions of Carl Fasano 
more of Carl Fasano’s work

Illustrating Math seminar:  online the second Friday of every month
hat tip Edmund Harriss

The story of making a cyanotype geometric quilt

Coxeter bead tutorial from Gwen Fisher

The quill work of Yvonne Walker Keshick

Geometric acoustic design

Hokusai’s Quick Lessons in Simplified Drawing in Three Volumes
Catalogue Raisonne of Hokusai:

Animations for bicycle wheels - Phenakistoscopes
hat tip

Slow motion water videos
hat tip

Building a fractal chair
hat tip core77
Editorial Comment:  to go with the tensegrity table?

Julian Voss Andreae’s disappearing sculptures
hat tip to core77

Tuesday, May 2, 2023

Geometry Links - May 2, 2023

 Kumihimo - the art of Japanese silk braiding
hat tip

Lego brick bending geometric art
hat tip:
Editorial Comment:  Charles Hoberman should know this artist if he already doesn’t

Gwenbeads - Gwen Fisher’s geometric beadwork, artwork, and tutorials

Cave paintings deciphered
Editorial Comment:  The Alexander Marshack reference in the article is someone whose work I knew, principally on prehistoric calendars of moon cycles, and met once upon a time.  He did good work.
Hat tip to  @ethnobot
Previously at
32 symbols may be our earliest written language
The First Signs: Unlocking the Mysteries of the World's Oldest Symbols by Genevieve von Petzinger
TED talk
Previously at
Neolithic geometric cave markings the beginning of written language?

Well-bred fractals

Aperiodic tiling shape that can cover a plane without any repeating patterns
Elusive ‘Einstein’ Solves a Longstanding Math Problem

Gego: Drawing in Space at the Guggenheim - "In 'Measuring Infinity,' the kinetic constructions of the Venezuelan sculptor Gertrud Goldschmidt climb, twist, dangle — and dazzle"

Beautiful example of tornado geometry

Bing Bang 2010 - kinetic sculpture

Water droplet sculptures of Ronny Tertnes
hat tip Rich Sage

Some natural fractals