Geometry Links - June 16, 2024

 Optical illusions illuminate neural pathways

https://scitechdaily.com/demystifying-vision-optical-illusions-illuminate-neural-pathways/

Peter Lu on Islamic Geometry
Quasicrystals in Medieval Islamic Architecture
https://www.youtube.com/watch?v=rldnu9rNpH8
Girih Tiles: Decagonal Geometry in Seljuq Architecture
https://www.youtube.com/watch?v=6AJx8IVcL_c
hat tip Eleftherios Pavlides

Most detailed (so far) 3D map of the Cosmos
https://news.ucsc.edu/2024/04/desi-universe-mapped.html
Video fly-through
https://www.youtube.com/watch?v=jRYUt9nE9b0

Kirby Urner’s slide deck on tetrahedral tessellators, Bucky Fuller's esoteric geometry of the B, E, A, S and T modules
https://docs.google.com/presentation/d/13QLfgKo6kyX0j0K0RJ7W0uisB0ZyeBiK-_qbzytipck/edit

Ancient Egyptian Calligraphy: A Beginner's Guide to Writing Hieroglyphs by Henry George Fischer
https://books.google.com/books?id=rWlk49hUmDIC&printsec=frontcover#v=onepage&q&f=false
hat tip Dr. Kirsten D. Dzwiza  https://youtube.com/@antikemagie, https://www.instagram.com/antikemagie/, https://www.antikemagie.com/
Editorial Comment:  a beautifully clear primer

Bacterial art
https://www.theguardian.com/artanddesign/gallery/2024/may/18/beautiful-bacteria-encounters-in-the-microuniverse-tal-danino

Twisted Torque Tensegrity
https://pretenst.com/construction/2024/04/23/torque

Rinus Roelofs' sculptures
https://www.facebook.com/photo?fbid=10233940204345848&set=pcb.10233940206985914
https://www.facebook.com/photo/?fbid=10234067851536948&set=pcb.10234067854537023

The Playful Eye: An Album of Visual Delight by Julian Rothenstein, Mel Gooding (Chronicle Books 2000):  "a virtual feast of games and visual tricks gathered from around the world.”
hat tip kk.org/cooltools

Daniele Barresi, champion carver
https://www.danielebarresi.net/carving
https://www.instagram.com/danielebarresi_artist/

Folding Camping Table, with a tensegrity element
https://www.core77.com/posts/132550/A-Nifty-Folding-Camping-Table

Custom rotating nozzles for 3D printing different textures in clay
https://www.core77.com/posts/132566/Producing-Crazy-Textures-by-3D-Printing-Clay-With-Custom-Rotating-Nozzles
https://www.instagram.com/piotr_wasniowski/

Geometry Links - May 4, 2024

 The marble floors of the Florence cathedral

https://www.reddit.com/r/ArchitecturePorn/comments/13dkqmy/the_16th_century_optical_illusion_of_florence/
https://www.reddit.com/r/ArtefactPorn/comments/qgsl9u/the_marble_mosaic_floor_of_the_florence_cathedral/
hat tip Monica Raymond

The Splash of a Drop - an 1895 study of drops of water splashing on a flat surface and the forms they make
https://publicdomainreview.org/collection/the-splash-of-a-drop-1895/
hat tip boingboing.net
Editorial Comment:  I bet Doc Edgerton knew this work and, if you don’t know Doc Edgerton, you should.

The New Mathematical Coloring Book:  Mathematics of Coloring and the Colorful Life of Its Creators by Alexander Sofer
https://link.springer.com/book/10.1007/978-1-0716-3597-1
hat tip Edmund Harriss

Souper Connect - A modular human-shaped block that can interlock and connect in endless ways
https://www.kickstarter.com/projects/hbb/hbb-human-building-blocks
hat tip core77.com

Cella - a Bauhausian Toy
https://www.youtube.com/watch?v=E7y9_rHrBnc
https://www.core77.com/posts/131781/Cella-A-Bauhausian-Toy

Stable torqued tensegrities from Gerald De Jong
https://www.facebook.com/photo/?fbid=10161035601318948&set=a.10150243650853948

Collaborating for Comprehensivity by CJ Fearnley, one of the founders of the Synergetics Collaborative
PDF version: https://drive.google.com/file/d/1bapsUhFtRDSPdAW6zRBe7omBlcghz-yi/ 
Amazon Kindle: https://www.amazon.com/dp/B0CW1K18B5/k

One painting, youth to age, depending upon perspective
https://www.instagram.com/reel/C5cfny9Mjc8/
hat tip Joan Mokray

Kagen Sound’s wooden puzzle boxes
https://www.youtube.com/watch?v=_NreYBwzRQk
hat tip boingboing.net

Root systems drawings
https://images.wur.nl/digital/collection/coll13/
hat tip http://kk.org/cooltools

Roman dodecahedron theories
https://www.washingtonpost.com/world/2024/04/30/roman-relic-norton-disney-dodecahedron-theories/
hat tip Amy Edmondson 

From Art to Math:  The Polymorphisms of the Polymorphic Elastegrity

https://drive.google.com/file/d/1nOIO3S0wxSSyINLFCU9CU2DedcSMAfnI/view

Geometry Links - March 22, 2024

 Rinus Roelof’s small exhibition at TEC, Oldenzaal the Netherlands

https://www.facebook.com/photo/?fbid=10233355533329438&set=pcb.10233355537849551

Mathematical patterns of Bach’s music
https://www.scientificamerican.com/article/secret-mathematical-patterns-revealed-in-bachs-music/

Sacred Geometry shop
https://www.geometrycode.com/shop/

Fynn Jackson, Origami sculptor 
https://www.instagram.com/jacksonsorigami/
https://www.etsy.com/shop/jacksonsorigami/
hat tip Vinay Gupta

Zellij, a style of North African mosaic work
https://twitter.com/BaytAlFann/status/1765319198996037662

Math Encounters: "Realizing Abstractions: what can mathematics do for art?" Edmund Harriss Nov. 2023
https://www.youtube.com/watch?v=KD9ujxO9D-I

How to fold the Miura ori
https://www.youtube.com/watch?v=ufA1Yvdq_kk
hat tip https://boingboing.net/2024/03/09/how-to-fold-a-piece-of-paper-like-a-satellite-solar-panel.html
More from the Fold Factory
https://www.youtube.com/@foldfactory/videos

NERVOUS Systems has been doing generative design since 2007
https://n-e-r-v-o-u-s.com/projects/
https://www.core77.com/posts/130027/Incredible-Sculptures-and-Fixtures-by-Experimental-Design-Studio-Nervous-System

Simulation of convection on the surface of Betelgeuse 
https://www.mpa-garching.mpg.de/1094283/hl202403

Naguri jig for wood patterning
https://www.core77.com/posts/130115/A-Clever-Jig-for-Producing-the-Naguri-Pattern-in-Wood

Hexabranchus sanguineus or the Spanish dancer
https://twitter.com/MikeHudema/status/1768840123020353998
hat tip Mike Udema: "Nature is amazing. Protect it.”

Penrose tilings and quantum information
https://www.quantamagazine.org/never-repeating-tiles-can-safeguard-quantum-information-20240223/
hat tip to Vinay Gupta

Geometry Links - February 15, 2024

 Music box Moëbius strip of Erik Satie’s Gymnopedie 1

https://wolfliving.tumblr.com/post/736992332742852608/mo%C3%ABbius-gymnopedy-transposition-de-la-1%C3%A8re
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
https://www.amazon.com/Circle-wholemovement-perspective-Bradford-Hansen-Smith/dp/0976677350/ref=sr_1_21

Geek Mom’s LED light
https://mastodon.social/@geekmomprojects/111604449708190756

Trace Loops paper animation
https://www.instagram.com/p/CwYdu43q1cJ/
hat tip boingboing.net

Greek village where every house is decorated with geometric figures
https://www.bbc.com/reel/video/p0h2sy22/the-greek-island-of-geometrical-wonders

National Museum of Mathematics has online courses:  for instance, topological crochet
https://momath.org/onlinecrochet/

Lanny Smoot’s omnidirectional floor
https://boingboing.net/2024/01/18/disney-imagineer-showcases-a-new-holotile-floor-on-which-you-walk-without-going-anywhere.html

Golden Ratio Tetra Spiral
https://www.youtube.com/watch?v=WRw6asdcpow
hat tip David Brian Koski

Some geometric models from Rinus Roelof
https://www.facebook.com/photo/?fbid=10233200136004602&set=pcb.10233200139444688

Sponge spicules - a biologist friend mentioned them on Facebook and I took a look.  Very interesting structural component system(s)
https://en.wikipedia.org/wiki/Sponge_spicule
Hat tip to Manda Clair

Armenian alphabet also a numerical system for mathematics
https://www.bbc.com/travel/article/20240208-how-a-1600-year-old-alphabet-shaped-armenian-identity

Improved one corner balancing cube
https://willempennings.nl/balancing-cube/
hat tip boingboing.net

From Geometry Links:  https://geometrylinks.blogspot.com/2016/10/geometry-links-compendium-2011-october.html

Cubli - a cube that can balance, jump, and walk
http://youtu.be/n_6p-1J551Y

Geometry Links - December 17, 2023

 Matt Brand’s specular holography - specular holography and rhombiyurts

https://www.zintaglio.com/
hat tip https://www.wcvb.com/chronicle 10/4/23

Tawa portable wood art game
https://www.kickstarter.com/projects/woodas/tawa-the-portable-wood-art-game-for-traveling

Stained Glass Smash - online app that creates geometric art by simulating smashing glass
https://glass.funwebsite.fun/
hat tip:  http://kk.org/cooltools

Siena Galaxy Atlas 2020
https://sga.legacysurvey.org/

Pisano quilts
https://observablehq.com/@tesseralis/pisano-quilts
Editorial Comment:  Any Peano curve quilts?

Following Albrecht Dürer’s 1525 geometric net:  snubcube and its dual
https://www.facebook.com/photo?fbid=10232826009691678&set=pcb.10232826014291793

Slow motion splash geometries
https://twitter.com/BrianRoemmele/status/1713704757838127226

Pull-up patterned polyhedra: Platonic Solids for the classroom
http://buff.ly/3W65iLU
printable templates: http://buff.ly/3BuY3DZ
hat tip Karl Thidemann

Nepali mokha art on the verge of disappearing
https://globalvoices.org/2023/12/01/as-nepali-villages-modernize-mokha-art-is-on-the-verge-of-disappearing/

Optical illusion - illusory yellow
https://twitter.com/AkiyoshiKitaoka/status/1730166843753800087

Heartbreaking: Local quadratic polynomial as a function of x struggling to fit constantly rotating data
https://mastodon.social/@acegikmo/111541524766320445

Ncube - generalized hypercube visualizer
https://ncube.ndavd.com/
hat tip boingboing.net

Geometry Links - October 4, 2023

 Pneuhaus - inflatable sculpture

https://www.pneu.haus/
https://www.instagram.com/pneuhaus
hat tip boingboing.net

Antique book patterns of front or end papers from 1890-1930, ordered by theme, by Bergen Norway Public Library
https://www.flickr.com/photos/bergen_public_library/albums/72157633827993925

Minimalist movie posters
https://www.michalkrasnopolski.com/#/classic-movies/
hat tip core77.com

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
https://spectrolite.app/
hat tip boingboing.net

Early [1.4 million years ago] human ancestors turned stones into spheres on purpose, study suggests
https://www.theguardian.com/science/2023/sep/06/early-human-ancestors-turned-stones-into-spheres-on-purpose-study-suggests

Daniel Agdag’s cardboard sculptures
https://www.theguardian.com/artanddesign/gallery/2023/sep/16/fragile-fantastical-designs-in-cardboard-in-pictures

Octet_8_in_1 by Joe Clinton
https://vimeo.com/863331197

Thomas Burgess’ adventures in geometry
https://thomasburgess.github.io/

InfiniteX Dodecahedron programmable art light
https://trivlo.co/products/color-art-light

Indian Tribal Tattoos
https://globalvoices.org/2023/09/28/documenting-indian-tribal-tattoos-before-they-disappear-forever/
Aipan Art
https://www.instagram.com/p/CsGYW8AIpfv/

Disaster relief bed - simple geometry that may have a deep impact
https://www.core77.com/posts/125913/Industrial-Designer-Invents-Vastly-Superior-Disaster-Relief-Bed

Ancient Egyptian mathematics and geometry
https://en.wikipedia.org/wiki/Rhind_Mathematical_Papyrus

Geometry Links - August 26, 2023

 Soundweaving - Hungarian embroidery patterns into music for music boxes

https://www.thisiscolossal.com/2015/01/soundweaving/

Lightning spectacle 
https://www.bbc.com/news/science-environment-66081621

The inventor of the spirograph, Denys Fisher, invents again (1977)
https://www.youtube.com/watch?v=vBvUahtCwqY
hat tip boingboing.net

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.⁠
⁠https://www.instagram.com/p/Cs9hudbJZk6/?img_index=1
hat tip boingboing.net

Houston will have a net energy positive public artwork, Arco del Tiempo, or Arch of Time, a shape made from the sun’s path
https://news.artnet.com/art-world/houston-clean-energy-artwork-arch-of-time-riccardo-mariano-2335103
hat tip Leslie Alden

Poetegrity 1. Tensegrity Poetry. 
https://www.facebook.com/704373947/videos/3640194922875962

Tauba Auerbach
http://www.taubaauerbach.com/works.php
https://www.instagram.com/tau_au/
hat tip kk.org/cooltools

A game of Go on a hyperbolic manifold
https://twitter.com/ZenoRogue/status/1686395272216158209
http://roguetemple.com/z/

Norman Brosterman - artist, curator, collector
https://www.brosterman.com/
author of Inventing Kindergarten
https://www.inventingkindergarten.com/Kaleidograph
Mentioned in the April 17, 2012 edition of Geometry Links (https://geometrylinks.blogspot.com/2016/10/geometry-links-compendium-2011-october.html):
http://kaleidographtoy.com/play/
https://kaleidographtoy.com/

On-site growth of perovskite nanocrystal arrays for integrated nanodevices
https://www.nature.com/articles/s41467-023-39488-0

12000 year old rock paintings in Colombia, tens of thousands of images
https://www.smithsonianmag.com/smart-news/tens-thousands-12000-year-old-rock-paintings-found-colombia-180976427/

Visualizing quantum entanglement of two photons
https://phys.org/news/2023-08-visualizing-mysterious-quantum-entanglement-photons.html