"A rose engine lathe is a specialized kind of geometric lathe. The headstock rocks back and forth with a rocking motion or along the spindle axis in a pumping motion, controlled by a rubber moving against a rosette or cam-like pattern mounted on the spindle, while the lathe spindle rotates. Rose engine work can make flower patterns, as well as convoluted, symmetrical, multi-lobed geometric patterns. The patterns it produces are similar to that of a Spirograph, in metal."https://en.wikipedia.org/wiki/Rose_engine_latheI learned about it through this interview with Brittany Cox, an antiquarian horologist and proprietor of Memoria Technicahttps://www.hodinkee.com/articles/brittany-cox-of-memoria-technica-10-questionsHow to make two far-flying paper airplaneshttps://youtu.be/fgdBaOqlmvwEvery Friday Mahir Cave shows how to make a paper airplane - cool paper planes, from origami easy to complex.Paper airplanes that fly far are his specialty and his goal is "How to make the best paper airplane in the world.”https://www.youtube.com/user/AWorldOfPaperr/featuredLeonardo Criolani - Italian designer https://www.leonardocriolani.com/index.htmlhat tip: core77.comDegrees of Freedom - origami inspired mechanical engineer and his designshttps://www.instagram.com/degreesoffreedomco/https://enjoydof.comThe work of Hadieh Shafiehttps://www.hadiehshafie.comhttps://globalvoices.org/2020/06/10/the-magic-of-paper-and-ink-a-conversation-with-iranian-american-artist-hadieh-shafie/Gömböc - a shape which has "only two equilibrium points—one stable and one unstable, instead of the usual minimum of 4. It is self-righting no matter how you set it down."https://youtu.be/rvVF5QWSYF4Flipo Flip™ — Pocket Size Kinetic Skill Toyhttps://www.kickstarter.com/projects/2107879482/flipo-fliptm-pocket-sized-kinetic-skill-toyAdam Savage's One Day Builds: Rhombic Dodecahedron Infinity Box with Matt Parker!https://youtu.be/65r_1TzJXaQIsamu Noguchi’s ashtrayshttps://www.artandobject.com/news/isamu-noguchi-masters-art-ashtrayOptical Illusion: Ninio’s Extinction Illusion - what you see is not what you gethttps://www.core77.com/posts/100230/Optical-Illusion-You-Can-See-All-the-Dots-in-This-Image-But-Not-All-at-OnceJohn Kostick’s work on polar zonahedra - be sure to check out the 3D models linked to his paperhttp://www.kosticks.com/polar-zonohedra.htmlhttps://sketchfab.com/search?q=jjkostick&sort_by=-pertinence&type=modelsCorona VirusThe most important jigsaw puzzle right now is the way the CoV-2 spike, a 3 part structure, attaches to the human ACE2 protein through which it can enter the cells of our bodies and figuring out how to stop it.FoldIt (https://fold.it) is a citizen science crowdsourcing site on protein folding. They’ve been up and running for over a decade and currently host a series of CoV-2 protein folding puzzles. These two papers, after a cursory search, are the clearest of representations of the spike and the protein I’ve seen:Cryo-EM structure of the 2019-nCoV spike in the prefusion conformationhttps://science.sciencemag.org/content/367/6483/1260Structural basis for the recognition of SARS-CoV-2 by full-length human ACE2https://science.sciencemag.org/content/367/6485/1444.longAnother way to approach the Coronavirus puzzle may be through sound. There are sonic representations of the Coronavirus spike made by Markus Buehler (mbuehler@mit.edu) and his team at MIT. They translated the 20 amino acids into tones based upon their spectra and used duration and volume to indicate other features like curvature into helices and stretching out into flatness. The Sonification of the Coronavirus Spike Protein (Amino Acid Scale) is about 35 minutes long (https://soundcloud.com/user-275864738/sets/protein-counterpoint) and The Viral Counterpoint of the Coronavirus Spike Protein (2019-nCoV) (https://soundcloud.com/user-275864738/viral-counterpoint-of-the-coronavirus-spike-protein-2019-ncov) is nearly two hours long and has three distinct movements, (one for each strand of the spike?).I’ve listened to both and played along with parts of both of them wondering if jamming with the virus could jam the virus or whether noise cancelling algorithms could cancel the CoV-2 spike, that is if the MIT amino acid to sound notation can go from sound to amino acid as well as amino acid to sound.Naive or crazy as that may sound.In any case, if you see anything on the Geometry Links of COVID-19 or ACE2, please let me know. Would be good if we could focus more attention on this critical point, where virus meets human cell, as a whole species conversation because we just might need a whole species conversation right now, and not just on COVID19.Stay safe, be well.
Coloring Workshop: Beautiful Symmetry (Suitable for all ages)Tuesday, March 3112:30 pm ESTOnlineRSVP at https://www.eventbrite.com/e/coloring-workshop-beautiful-symmetry-by-alex-berke-all-ages-tickets-100799496006Alex BerkeCalm yourself with coloring and learn math in the meantime! Join Alex Berke, a creative computer scientist, civic hacker, and MIT Media Lab researcher, to engage with mathematical concepts visually through coloring challenges and puzzles. Come ready to color with us! Don't forget to bring your favorite coloring tools—your fine point colored pens, crayons, or a pencil you just found.To participate, download and print out these coloring sheets: https://drive.google.com/file/d/1Qd7eIuPo5uR3UMDHVUineM5dwzAgld2t/viewAbout the Book: Beautiful Symmetry by Alex BerkeBeautiful Symmetry is a coloring book about math, inviting us to engage with mathematical concepts visually through coloring challenges and visual puzzles. We can explore symmetry and the beauty of mathematics playfully, coloring through ideas usually reserved for advanced courses. The book is for children and adults, for math nerds and math avoiders, for educators, students, and coloring enthusiasts.Through illustration, language that is visual, and words that are jargon-free, the book introduces group theory as the mathematical foundation for discussions of symmetry, covering symmetry groups that include the cyclic groups, frieze groups, and wallpaper groups. The illustrations are drawn by algorithms, following the symmetry rules for each given group. The coloring challenges can be completed and fully realized only on the page; solutions are provided. Online, in a complementary digital edition, the illustrations come to life with animated interactions that show the symmetries that generated them.Traditional math curricula focus on arithmetic and the manipulation of numbers, and may make some learners feel that math is not for them. By offering a more visual and tactile approach, this book shows how math can be for everyone. Combining the playful and the pedagogical, Beautiful Symmetry offers both relaxing entertainment for recreational colorers and a resource for math-curious readers, students, and educators.—————————— New 3D-Printed Lattice Designs Are Ultra-Lightweight and Ultra-Stiffhttps://scitechdaily.com/new-3d-printed-lattice-designs-are-ultra-lightweight-and-ultra-stiff-despite-breaking-the-rules/3-D printing glasshttps://scitechdaily.com/new-3d-printer-produces-complex-glass-objects-video/https://youtu.be/nBM_wsMscfcDissecting and redesigning protein-based pattern formationhttps://scitechdaily.com/aiming-to-to-form-biological-patterns-scientists-dissect-and-redesign-protein-based-pattern-formation/https://youtu.be/FbWf1bV_iZATubulane Inspired Ultrahard Polymershttps://scitechdaily.com/tubulane-inspired-ultrahard-polymers-are-full-of-holes-but-stop-bullets-better-than-solid-materials/https://youtu.be/F8ANx7z4ahwBuckyballs in space made from carbon dust of dying starshttps://scitechdaily.com/mysterious-buckyballs-found-throughout-interstellar-space-puzzled-scientists-until-now/Research reveals key molecular events in crystal growthhttps://scitechdaily.com/research-into-the-mysteries-of-crystal-growth-reveals-key-molecular-events/New high temperature superconductor, thorium decahydride (ThH10)https://scitechdaily.com/thorium-superconductivity-new-high-temperature-superconductor-discovered/Atomic-Level Imaging May Enable Metals With Unprecedented Propertieshttps://scitechdaily.com/atomic-level-imaging-may-enable-metals-with-unprecedented-properties/Crystals that shrink when heatedhttps://scitechdaily.com/the-fascinating-secret-behind-crystals-that-shrink-when-heated/Degrees of Freedom - origami furniture from a former SpaceX designerhttps://enjoydof.comhttps://www.core77.com/posts/94178/Self-Assembling-Origami-Furniture-Designed-by-Former-SpaceX-EngineerLaser cut steel in nautilus shell formshttps://mckitterick.tumblr.com/post/611412676154884096hat tip: @doctorowGeometry of Circles - 1979 Sesame Street video with score by Philip Glasshttps://youtu.be/D-op5kqeoEchat tip: boingboing.net
Tunable Crystal Symmetry in Graphene Enables Nanoelectromechanical Sensorshttps://scitechdaily.com/tunable-crystal-symmetry-in-graphene-enables-nanoelectromechanical-sensors/Controlling crystal growth for innovations in medicine, engineeringhttps://scitechdaily.com/research-into-the-mysteries-of-crystal-growth-reveals-key-molecular-events/The Fascinating Secret Behind Crystals That Shrink When Heatedhttps://scitechdaily.com/the-fascinating-secret-behind-crystals-that-shrink-when-heated/Tara Pratap Ebsworthhttps://www.drizzlerock.com/hexagonshttps://www.drizzlerock.com/pillar-of-lightNeutrinos Lead to Unexpected Discovery in Basic Mathhttps://www.quantamagazine.org/neutrinos-lead-to-unexpected-discovery-in-basic-math-20191113/Six(?) sided vinyl record with overlapping trackshttps://www.core77.com/posts/91823/A-Playable-Six-Sided-Vinyl-Record-With-Overlapping-TracksMore Edmund Harriss* https://maxwelldemon.com/image-index/*see October 2019 Geometry Links: http://geometrylinks.blogspot.com/2019/10/ Patterns of the Universe: A Coloring Adventure in Math and Beauty by Alex Bellos and Edmund Harrisshttps://theexperimentpublishing.com/catalogs/spring-2016/patterns-of-the-universe/How a Tesla valve workshttps://youtu.be/tcV1EYSUQMEFlower shapes and pollination analysis“Modularity increases rate of floral evolution and adaptive success for functionally specialized pollination systems” by Agnes S. Dellinger, Silvia Artuso, Susanne Pamperl, Fabián A. Michelangeli, Darin S. Penneys, Diana M. Fernández-Fernández, Marcela Alvear, Frank Almeda, W. Scott Armbruster, Yannick Staeder and Jürg Schönenberger, 5 December 2019https://www.nature.com/articles/s42003-019-0697-7All morphometric analyses were performed in R and scripts, they are available in a.zip file at https://phaidra.univie.ac.at/o:1043204Aquatecture rain-catcherhttps://www.dezeen.com/2019/12/02/aquatecture-rain-catcher-panels-shaakira-jassat/amp/Twixt - pegboard and string connection game reissuedhttps://boardgamegeek.com/boardgame/949/twixthat tip to https://kk.org/cooltools/Many ropes and one jumperhttps://twitter.com/elatticus/status/1206312023845490688Victor Acevedo’s Digital Art Calendarhttps://www.etsy.com/listing/762297411/2020-wall-calendar-the-digital-art-ofOptical Illusion of the Yearhttps://youtu.be/HC0GGkNZPgshttps://boingboing.net/2019/12/20/bewildering-optical-illusion-a.html
