Thursday, February 15, 2024

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

Sunday, December 17, 2023

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

Wednesday, October 4, 2023

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

Saturday, August 26, 2023

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

Sunday, July 2, 2023

Geometry Links - July 2, 2023

 Knitting a glove with a Roman dodecahedron

https://www.youtube.com/watch?v=poGapxsanaI
hat tip boingboing.net 

Best illusions of the year contest videos
https://illusionoftheyear.com/vote/
hat tip boingboing.net

151 Illusions & Visual Phenomena with explanations
https://michaelbach.de/ot/index.html
hat tip https://kk.org/cooltools/

Web tool for making Turing Patterns
https://karlsims.com/rdtool.html
hat tip, again, boingboing.net

Infinity Octahedron from GeekMomProjects
https://www.geekmomprojects.com/infinity-octahedron/

Chaim Goodman-Strauss’ Math, Art, Stuff 
https://chaimgoodmanstrauss.com/
hat tip Edmund Harriss

3D printed spinning origami
https://www.youtube.com/watch?v=iwn72QqmLjw
https://www.printables.com/model/499094-popup-spinning-origami
hat tip Gwen Fisher

Applying algebra instead of geometry to dynamical systems
https://www.quantamagazine.org/flow-proof-helps-mathematicians-find-stability-in-chaos-20230615/
hat tip to Michael Bauwens

How to make a spider web
https://www.tiktok.com/@dinaoren0/video/7001678707005852933
hat tip Joan Mokray

Stencil IQ test
https://www.theguardian.com/science/2023/jun/26/can-you-solve-it-the-simple-question-almost-everyone-gets-wrong
Stenciletto game
https://smileyworldgames.com/

Master paper folding mask maker João Charrua
https://www.instagram.com/joao_charrua/
hat tip boingboing.net

Have you seen an octopus do this before?
https://twitter.com/WaterlsScary/status/1675325979810734080
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

https://www.youtube.com/watch?v=6iqtxuYnjo8
More on tensegrity 
https://en.wikipedia.org/wiki/Tensegrity
hat tip Karl Thidemann

Geometric abstractions of Carl Fasano
https://issuu.com/fasanoatgmail.com/docs/carl_fasano_portfolio_copy101ab 
from https://geometrylinks.blogspot.com/2017/01/geometry-links-january-6-2017.html
more of Carl Fasano’s work
https://vimeo.com/124064560

Illustrating Math seminar:  online the second Friday of every month 
https://illustratingmath.org/seminars
hat tip Edmund Harriss

The story of making a cyanotype geometric quilt
https://mastodon.social/@cyanotype@zirk.us/110339818284825320

Coxeter bead tutorial from Gwen Fisher
https://www.etsy.com/listing/202740541/tutorial-coxeter-bead-beaded-with-half

The quill work of Yvonne Walker Keshick
https://www.pinterest.com/pauletteza/yvonne-walker-keshick/

Geometric acoustic design
https://www.kireiusa.com/blog/tessellate-launch-5-new-kirei-acoutic-design-products/

Hokusai’s Quick Lessons in Simplified Drawing in Three Volumes
https://cdn.flipsnack.com/widget/flipsnackwidget.html?hash=ftcsgji5x&bgcolor=EEEEEE&t=1481362893
https://cdn.flipsnack.com/widget/flipsnackwidget.html?hash=fti4xlqen&bgcolor=EEEEEE&t=1481363446as
https://cdn.flipsnack.com/widget/flipsnackwidget.html?hash=fdcj01ckg&bgcolor=EEEEEE&t=1481364640
Article:  https://inaminuteago.com/free-drawing-lessons-great-master-hokusai/
Catalogue Raisonne of Hokusai:  http://www.hokusai-katsushika.org/index.html

Animations for bicycle wheels - Phenakistoscopes
https://www.instagram.com/le_maille/
hat tip boingboing.net

Slow motion water videos
https://www.instagram.com/p/Cr3YOlJN6S8/
hat tip boingboing.net

Building a fractal chair
https://www.youtube.com/watch?v=e8pvjEHAt6U
hat tip core77
Editorial Comment:  to go with the tensegrity table?

Julian Voss Andreae’s disappearing sculptures
https://julianvossandreae.com/works/
hat tip to core77

Tuesday, May 2, 2023

Geometry Links - May 2, 2023

 Kumihimo - the art of Japanese silk braiding

https://www.japanhousela.com/exhibitions/kumihimo-the-art-of-japanese-silk-braiding-by-domyo/
hat tip core77.com

Lego brick bending geometric art
https://www.brickbending.com
https://www.youtube.com/@BrickBending/videos
https://www.instagram.com/brickbending/
hat tip:  boingboing.net
Editorial Comment:  Charles Hoberman should know this artist if he already doesn’t
https://www.hoberman.com/

Gwenbeads - Gwen Fisher’s geometric beadwork, artwork, and tutorials
https://www.etsy.com/shop/gwenbeads

Cave paintings deciphered
https://www.openculture.com/2023/02/archaeologists-may-have-discovered-a-secret-language-in-lascaux-chauvet-cave-paintings.html
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 https://geometrylinks.blogspot.com/2019/03/geometry-links-march-13-2019.html
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 https://youtu.be/hJnEQCMA5Sg
http://www.openculture.com/2019/03/40000-year-old-symbols-found-in-caves-worldwide-may-represent-the-earliest-written-language.html
Previously at http://geometrylinks.blogspot.com/2018/11/
Neolithic geometric cave markings the beginning of written language?
https://www.newscientist.com/article/mg23230990-700-in-search-of-the-very-first-coded-symbols/

Well-bred fractals
https://www.pinterest.ca/fractalsteve/well-bred-fractals-portfolio-500/

Aperiodic tiling shape that can cover a plane without any repeating patterns
https://www.newscientist.com/article/2365363-mathematicians-discover-shape-that-can-tile-a-wall-and-never-repeat/
Elusive ‘Einstein’ Solves a Longstanding Math Problem
https://www.nytimes.com/2023/03/28/science/mathematics-tiling-einstein.html?unlocked_article_code=ZclmZJHYxxbOyBsQoxzwBIBz5tAPG_bCitp569M_pDdSjVlrmq-mYcMkQHDstkTA2lNTXZExWKCPF27Q4ChjEYiaLAytfdrD4IvmHkgfarsG1bswSt0HAZL71WSh_y8DgILd__nKF8woGtPnrBrcuRLVyoBH81eU-A_qmctEOSG0c5Q2bHzydb_7ltH-faq61yTF91IcQQ4Of9CY4uSAGmO1M9a_zifOlqFDjc43MXeliV7FQ_9DjZF5qkC7f0LLgPtqNHSXpou21MHrF0pND6JbU7SigLCv2o2VXcZLMiq6451gZiqN4puLnBNwI1MRkIDl4yswXhJdlPIDJEQg6ud8-n5O&smid=em-share

Gego: Drawing in Space at the Guggenheim - "In 'Measuring Infinity,' the kinetic constructions of the Venezuelan sculptor Gertrud Goldschmidt climb, twist, dangle — and dazzle"
https://www.nytimes.com/2023/03/30/arts/design/gego-guggenheim-review.html?unlocked_article_code=Wrhi_VmLNsx5gP_PVf9WOjO88f95ryQATYYkLoyTpQ114xaTPtjgmgVbggqU4ox9235iksUFvHTT9E_fS8Oc0sX3rJhMINjtTnRj-uaXMAcbeL06haD4oddq-tjNrjlnMwq31GVXo5yR0IG4i1ZEtm9nFTCzLDf0n0FXdgTqQDzRleeAzNOdMUkfDuU849I2A7as4tkMoNx0sY2gvTHqmzXGeqXEScOBj8XxPOor7e0_XhoJmsZP5OUY5P6uB-FyepLWwArw_V4vUGus9OT1ZOrAQxLUo091VqRO5YaAzH5doXjpGZ_FLAlPIO3oU_GeAidGBsWRhJ0blwTIyIlIu4BVrhg&smid=em-share

Beautiful example of tornado geometry
https://twitter.com/fasc1nate/status/1643565548813316096

Bing Bang 2010 - kinetic sculpture
https://www.instagram.com/p/CoYedy7JWqy/

Water droplet sculptures of Ronny Tertnes
https://ronnytertnes.com/
https://www.instagram.com/ronnytertnes/
hat tip Rich Sage

Some natural fractals
https://www.treehugger.com/amazing-fractals-found-in-nature-4868776