Andy Hall

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Andy Hall

@testtubegames.bsky.social

Sharing science through games, simulations, and toys. You can find the projects I’ve built at TestTubeGames -> https://testtubegames.com

Gravity Simulator, the Electric Shocktopus, Bond Breaker, Agent Higgs 2, Velocity Raptor, and more. he/him
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Video About Electroadhesion A new discovery called “hard-soft electroadhesion” enables chemists to stick almost any hydrogel to almost any metal, using nothing but electric current. #Science #Physics #Chemistry
This Video is About Electroadhesion.youtu.be How would you stick a slice of banana to a sheet of copper? Until a few months ago, you couldn’t. But a new discovery called “hard-soft electroadhesion” enables chemists to stick almost any hydrogel to almost any metal, using nothing but an electric current. Join George as he tries to replicate electroadhesion in his basement and discovers what it has in common with superglue… and, surprisingly, water. #Electroadhesion #ACSCentralScience #ChemistryExperiment #DIYScienceExperiment #DIYChemistry #Superglue #HowGlueWorks Credits: Executive Producer: Matthew Radcliff Producers: Andrew Sobey Elaine Seward Darren Weaver Writer & Host: George Zaidan Scientific Consultants: Michelle Boucher, Ph.D. Rigoberto C. Advincula, PhD Leila Duman, Ph.D. Srinivasa R. Raghavan, Ph.D. Wenhao Xu Executive in Charge for PBS: Maribel Lopez Director of Programming for PBS: Gabrielle Ewing Assistant Director of Programming for PBS: John Campbell Reactions is a production of the American Chemical Society. © 2024 American Chemical Society. All rights reserved. Sources: Reversibly Sticking Metals and Graphite to Hydrogels and Tissues https://pubs.acs.org/doi/10.1021/acscentsci.3c01593 Electroadhesion Technologies for Robotics: A Comprehensive Review https://ieeexplore.ieee.org/abstract/document/8946902 Electroadhesion with application to touchscreens https://pubs.rsc.org/en/content/articlelanding/2019/sm/c8sm02420k Advancement of Electroadhesion Technology for Intelligent and Self‐Reliant Robotic Applications https://onlinelibrary.wiley.com/doi/full/10.1002/aisy.202200064 Visualization methods for understanding the dynamic electroadhesion phenomenon https://iopscience.iop.org/article/10.1088/1361-6463/aa6be4 Surface haptics via electroadhesion: Expanding electrovibration with Johnsen and Rahbek | IEEE Conference Publication | IEEE Xplore https://ieeexplore.ieee.org/abstract/document/7177691 Interfacial Phenomena in Adhesion and Adhesive Bonding | SpringerLink https://link.springer.com/book/10.1007/978-981-99-4456-9 What are adhesives and sealants and how do they work? - ScienceDirect https://www.sciencedirect.com/science/article/abs/pii/B9780128199541000034 A review of adhesion science - ScienceDirect https://www.sciencedirect.com/science/article/abs/pii/S010956410900503X?via%3Dihub Adhesion: Molecules and Mechanics | Science https://www.science.org/doi/10.1126/science.263.5154.1720 Handbook of Adhesives | SpringerLink https://link.springer.com/book/10.1007/978-1-4613-0671-9 Knovel - kHTML Viewer https://app.knovel.com/web/view/khtml/show.v/rcid:undefined/cid:kt009IAFZ3/viewerType:khtml//root_slug:joining-un-adhesive-bonding/ Bonding Mechanism of Cyanoacrylates on SiO2 and Au: Spectroscopic Studies of the Interface | The Journal of Physical Chemistry C https://pubs.acs.org/doi/10.1021/acs.jpcc.1c06477 Advancement of Electroadhesion Technology for Intelligent and Self‐Reliant Robotic Applications - Rajagopalan - 2022 - Advanced Intelligent Systems - Wiley Online Library https://onlinelibrary.wiley.com/doi/full/10.1002/aisy.202200064 Unravelling the Chemical Influence of Water on the PMMA/Aluminum Oxide Hybrid Interface In Situ | Scientific Reports https://www.nature.com/articles/s41598-017-13549-z Dissimilar material joining of densified superwood to aluminum by adhesive bonding | The International Journal of Advanced Manufacturing Technology https://link.springer.com/article/10.1007/s00170-024-13155-0 An inelastic electron tunnelling spectroscopy (IETS) study of poly(vinylacetate) poly(methyl methacrylate) and poly(vinylalcohol) adsorbed on aluminium oxide - ScienceDirect https://www.sciencedirect.com/science/article/abs/pii/0032386185901545 Molecular imaging of paper cross sections by FT-IR spectroscopy and principal component analysis | Analytical and Bioanalytical Chemistry https://link.springer.com/article/10.1007/s00216-013-6967-1 Understanding Wood Bonds–Going Beyond What Meets the Eye: A Critical Review https://www.fpl.fs.usda.gov/documnts/pdf2018/fpl_2018_hunt002.pdf Content Not Found: Ingenta Connect https://www.ingentaconnect.com/content/10.7569/RAA.2014.097304 fpl.fs.usda.gov/documnts/fplgtr/fplgtr282/chapter_10_fpl_gtr282.pdf https://www.fpl.fs.usda.gov/documnts/fplgtr/fplgtr282/chapter_10_fpl_gtr282.pdf Role of contact electrification and electrostatic interactions in gecko adhesion - PMC https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4233685/ Chemistry Ph.D. Explains how Super Glue Actually Works. https://www.youtube.com/watch?v=1hY1jyGNzIo Compound Interest: Sticky Science – The Chemistry of Superglue https://www.compoundchem.com/2015/10/15/superglue/ What makes super glue so super? | HowStuffWorks https://home.howstuffworks.com/question695.htm Electron Microscopy for Visualization of Interfaces in Adhesion and Adhesive Bonding | SpringerLink https://link.springer.com/chapter/10.1007/978-981-99-4456-9_2
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Just two neutrons? Today's level can't be possible with just two neutrons... Daily Higgs: testtubegames.com/dailyhiggs.h...
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Background: I'm a professional science educator. Here's my wholesome story of the day. I've been going to a personal trainer to get back into shape after a LOT of injuries/surgeries. Each week we chat about some nerdy science thing. He isn't a science guy, but is very interested in it all. 1/?
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Space Elevator, a very nice/fun website to explore what's higher and higher. Birds, vehicles, natural phenomenon. Even lets you pick a space suit as you go up! neal.fun/space-elevat...
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Spaceflight Simulator is delightful! Picture Kerbal Space Program, but a lot easier to use. Built by Stefo Mai Morojna. I just did a flyby of the moon and returned safely! After a few... less successful... attempts. On phones, mac, steam, etc: store.steampowered.com/app/1718870/... ⚛️🎢🔭
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IT IS TIME. The 6th annual United States of Science Challenge begins NOW. Each bubble represents classrooms we matched w/scientists over the last year. $10 donations fill in bubbles. The first region to close all their bubbles wins! givebutter.com/Wj5JGG
United States of Science 2024givebutter.com By Skype a Scientist
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Playing around with my evolution simulation again -- and I forgot the racetrack actually has an edge. Sorry, creatures, you evolved to be too fast. Gif: testtubegames.com/ShareBox/Fit... Evolve your own: testtubegames.com/fittest2.html
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"The ex-orphans must have come across him alone in the bush and, realising that he was in dire need of help, frogmarched him to the place they knew to be a refuge for all elephant." MY HEART ❤️❤️❤️
Everyone rightfully excited about the #Elephant "name" news, but the elephant news that really got me this week was over at Sheldrick. Recent orphan Toto was brought to them by PREVIOUSLY RESCUED ELEPHANTS who found him and knew just where to take him. ❤️ www.sheldrickwildlifetrust.org/orphans/toto
Totowww.sheldrickwildlifetrust.org With half a century of elephant conservation to our name, it can sometimes feel like we have seen it all. But even among the hundreds of orphan rescues that have unfolded over the years, Toto’s story ...
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Downy Woodpecker using her extra-special longer tail feathers for stability and balance. The stiffer tail feathers are black - melanin confers resistance & wear-proofing to feathers. Youngsters might have to spread feathers more until they get the hang of bracing. 🌿🪶
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Time once again for everyone's favorite game... "Guess... that... Force Law!" Here's a single star being orbited by an asteroid. Is the force law... a) Fg ~ r^1.5 b) Fg ~ r^1.0 c) Fg ~ r^0.5 d) Fg ~ r^-3 Show your work. ⚛️🎢
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Huh, can't believe it wasn't on The Science Playground yet... Veloc-t in Space, a simulation where you fly through the universe at relativistic speeds. Can you make it to Andromeda in one dino’s lifetime? Built by me. testtubegames.com/veloctinspac...
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Today's Daily Higgs involves the Weak Force. Good luck! testtubegames.com/dailyhiggs.h...
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Time once again for everyone's favorite game... "Guess... that... Force Law!" Here's a single star being orbited by an asteroid. Is the force law... a) Fg ~ r^1.5 b) Fg ~ r^1.0 c) Fg ~ r^0.5 d) Fg ~ r^-3 Show your work. ⚛️🎢
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Metaflora is a super fun way to learn how plants are related. Figure out today's plant - and along the way have your mind blown countless times. (Cucumbers are closely related to melons?! The universe all makes sense now.) Built by Trainwreck Labs. flora.metazooa.com
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Are the neutrinos ghosts now? Yes... they are ghosts now. But, ghosts won't block Higgs (neutrinos don't interact directly with the Higgs field, you see) -- so you'll need to find another way to beat today's daily level... testtubegames.com/dailyhiggs.h...
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Heading into school break, and want to play around with fun science this summer? I've pulled together a list of some of my favorite science games & simulations. 🎢🥽 The Science Playground: thescienceplayground.com
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As always, someone found a sneaky way to beat today's Daily Higgs in waaay fewer moves than 'perfect.' Can you find it, too? testtubegames.com/dailyhiggs.h...
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Fluid Simulation, an oddly compelling toy. Go make some swirling vortices! Created by Pavel Dobryakov ⚛️ Play: paveldogreat.github.io/WebGL-Fluid-...
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A fun toy for drawing field lines around charges, and even launching little test charges around them. Built by Open Source Physics. ⚛️ iwant2study.org/lookangejss/...
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I heard today's level can be beaten in 4 moves, but I don't believe it... Daily Higgs: testtubegames.com/dailyhiggs.h...
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This trick works with most light, uniform cylinders. Wine corks are particularly good apparently! Drop from 1.25x the height of the cylinder and this should happen most of the time. Moments in action! #ITeachPhysics www.youtube.com/shorts/gOpFJ...
Cylinder drop #physicswww.youtube.com This demo works for symmetric, light cylinders. If you drop them about 1.25 above their height this usually works. Could be used as a demo in Moments or othe...
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Bicycle - a page filled with interactives that is literally a Tour de Force of a whole bunch of physics + mechanics. Created by Bartosz Ciechanowski. ⚛️ ciechanow.ski/bicycle/
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All things must decay. Err, some things must decay. Daily Higgs: testtubegames.com/dailyhiggs.h...
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An interactive pendulum clock to play around with. It's about time. Built by Erik Neumann at myPhysicsLab. ⚛️ www.myphysicslab.com/engine2D/pen...
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Quarks and Antiquarks in today's Daily Higgs. Possible in 13 moves, I've heard. testtubegames.com/dailyhiggs.h...
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This might be the coolest thing I've seen on the internet in a while. You can put in a location and pick a date in history to see where on the Earth's surface that location was at that time (and how it was arranged). dinosaurpictures.org/ancient-eart...
Ancient Earthdinosaurpictures.org Earth looked very different long ago. Search for addresses across 750 million years of Earth's history.
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I enjoy that I can sort The Science Playground by categories -- and even share that via links. Like, if you just want to see *free* science interactives available on the *web*, and sorted with the *newest added* at the top... you just go here: thescienceplayground.com?Cost=Free&Pl...
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Is it really Friday if you don't get to play with a double pendulum? Created by MinuteLabs ⚛️ - labs.minutelabs.io/Chaotic-Pend...
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The force is strong with these bottom quarks. Today's Daily Higgs is possible in 4 moves. Simple! testtubegames.com/dailyhiggs.h...