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

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?"

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

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

Geometry Links - March 8, 2023

 Visualizing languages as sculptures

https://www.dezeen.com/2023/02/09/ucl-researchers-3d-printed-objects-visualising-endangered-languages-design/

Ralph Ammer - How to Draw Ideas and Lots of Dots especially
https://ralphammer.com
hat tip Dr Robert Solomon

Steve Lawrence’s well-bred fractals
https://www.facebook.com/steve.lawrence.52/photos

Virginia Fleck’s plastic bag mandalas
https://www.virginiafleck.com/plastic-bag-art
More of her recycled material art at https://www.instagram.com/virginiafleckstudio/
hat tip boingboing.net

Auguste Herbin - especially his L’Alphabet Plastique
https://visualmelt.com/Auguste-Herbin
hat tip Antiques Roadshow

Origami Fashion with Uyen Nguyen
https://www.facebook.com/orbmaker/posts/uyen-nguyen-and-her-mathematical-origami-fashion-designs-fabulous-work-thanks-di/2472127673103962/
https://www.youtube.com/watch?v=i4AoN1DtH6I
https://www.youtube.com/watch?v=bD7vUhdyO34
hat tip boingboing.net

Octopus transform
https://twitter.com/MikeHudema/status/1629335912961146882

Teaching geometry and math through quilting
https://boingboing.net/2023/02/25/retired-educator-teaches-youth-geometry-and-math-through-quilting-and-they-love-it.html

from https://mathemalchemy.org - a traveling exhibit of a large multimedia art installation that celebrates the creativity and beauty of mathematics
Quilter
https://dominiquehrmann.com/en/home/
http://gathering4gardner.org
http://bridgesmathart.org
http://artifactpuzzles.com <http://artifactpuzzles.com/>
http://www.artofmathematics.org

Modular origami artist
http://fionagillespie.com/origami.html

Nathalie Meibach weaves data into shapes
https://www.nathaliemiebach.com
I’ve mentioned her work before:
https://geometrylinks.blogspot.com/2016/10/geometry-links-compendium-2011-october.html

Geometry Links - February 10, 2023

 The Book of Leaves

https://vimeo.com/bfophoto/thebookofleaves

Stool made from one repeating component
https://www.core77.com/posts/117950/Concept-Design-for-a-Stool-Made-from-a-Repeating-Component
Another stool with a similar but different idea
https://mastodon.social/@hrheingold/109690239934490590

Ice flower on Songhua River
https://www.reddit.com/r/interestingasfuck/comments/zzvc7h/ice_flower_on_songhua_river_in_northeast_china/
hat tip Marjorie Farrell

Freaky Fractals: video feedback machine
https://makezine.com/projects/freaky-fractals-hd-video-feedback-machine/
hat tip kk.org/cooltools

Toroidal propellers - quieter and more efficient
https://newatlas.com/aircraft/toroidal-quiet-propellers/

The industrial coastal pier of the former Steetley Magnesite Works on the coast at Hartlepool
https://mastodonapp.uk/@davidallan/109774189823224114 

Geometry Study - Zen Garden Explorations
https://www.youtube.com/watch?v=qDoBHp9tZag
hat tip boingboing.net
More Zen sand garden geometric explorations at https://www.youtube.com/@yukikawae6549/videos

Rinus Roelofs’ geometric videos
https://www.facebook.com/rinus.roelofs.3/videos
hat tip Olga Uskova

Medium density amorphous ice
https://www.nytimes.com/2023/02/03/science/new-ice-glass.html?unlocked_article_code=OovYw1by61OB4i5_uCPxUpiafAi3pUWmFkENPX1htuoFKIWbO3a2j6_NU174O9l9nKJK7ggJoxkj_uO6xG-tVD49FDzx4OaZd7ZIdSf1fXTCNemlgu1QestWY6zl3wWLO27bdyEReBZyc6q9TCWjHYQJipAzsSzRqt_q40u3TdAzz6qqKabwztpvNU5FGw2V881sAIoqfh6CB9P_68hSmcScpRqCPHL-WHkCtYvzbZPz0zQr62ho6bDJNeWlTrzoxKFjrfobwKKxCUqKX4aLaqq9bdvwXktt0pPuHMhZ11YFdHnQoh8br4F8FsL6_uXlfrhcr3B7BQ&smid=em-share
from https://geometrylinks.blogspot.com/2022/04/geometry-links-april-29-2022.html
New form of ice - there are 20 so far and theoretically around 300 different forms of ice possible
https://www.zmescience.com/space/physicists-find-a-new-type-of-exotic-ice-that-likely-exists-deep-in-earths-mantle-or-even-water-rich-alien-planets/
https://phys.org/news/2022-03-ice.html
Paper:  https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.104109
Ice XI:  https://en.wikipedia.org/wiki/File:Ice_XI_View_along_c_axis.png
hat tip Warren Ellis and Robert McElaney
Editorial Comment: I don’t believe they’ve found Vonnegut’s Ice Nine yet though and there’s probably much more to learn about H2O, especially at its temperature of highest density, 3.98°C or 39.164ºF, I suspect

3-D renderings of unbuilt Frank Lloyd Wright designs
https://www.smithsonianmag.com/smart-news/see-what-these-unbuilt-frank-lloyd-wright-masterpieces-would-look-like-180981532/
https://www.flickr.com/photos/143771393@N04/albums/with/72157673116725982
http://www.hookedonthepast.com
hat tip boingboing.net

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

Imaging technology revealing ancient secrets
https://www.bbc.com/future/article/20230208-the-tech-revealing-hidden-doodles-in-old-books-and-objects

Still time to RSVP for
Mathemalchemy Symposium:  Exploring the Intersections of Mathematics, Art, & Education
Friday, February 24th – 10 am to 4:00 pm
808 Gallery – 808 Commonwealth Ave. Boston, MA
RSVP at https://www.eventbrite.com/e/math-art-education-symposium-registration-465737833397