testtubegames.com - Profile | ThreadSky | a Reddit-style client for Bluesky

Hello what have we here? I didn't think this would be stable, but it is! (Planets are 1 Earth-mass each)

submitted 6 days ago • 14 comments

I have a platform. It may be small, however, I still feel compelled to use it. youtu.be/RGPF-BzWxCc #PhET #NSFgrants #physicseducation

submitted 9 days ago • 2 comments

New speed run world record for The Electric Shocktopus just shared by "wert" in our Discord. There's something stunning about watching your game played perfectly. Little shortcuts I didn't even know were possible... www.youtube.com/watch?v=qZUq...

submitted 18 days ago • 0 comments

If you're in the USA, you can no longer watch the Dutch TV special about my theories on fascism and pro wrestling on YouTube! Oh no!! But fear not, for I have uploaded the full thing to my Vimeo for American viewing and sharing Go forth:

submitted 20 days ago • 45 comments

ONE MONTH AWAY, FOLKS!!! This is the perfect time to pre-order! I don't have a pre-order campaign, because my campaign would be, "you get a cool rock!", and really, that's something you should find for yourself. ;) Available to preorder from your local bookstore! Also: bookshop.org/p/books/i-ro...

submitted 22 days ago • 2 comments

Now this is just stunning

submitted 23 days ago • 3 comments

Working on a project (about photons from the CMB) - and got a chance to simulate a blackbody spectrum graph. Which is just super satisfying.

submitted 24 days ago • 1 comment

OMG!!! This students' science communication project on food webs blew me away. Here's PART of it... 1/n #insects #rivers #PUI #AcademicChatter

submitted 24 days ago • 7 comments

On FB I saw pictures of "orbit of planets seen from Earth", oversimplified the ratios of the periods. Worse, Mercury was not even close. So I dusted off an old glowscript program and made it easier to use. Thanks to @wbrianlane.bsky.social for the video on widgets. trinket.io/glowscript/5...

submitted 39 days ago • 1 comment

submitted 25 days ago • 29 comments

1/7 💔 We are very disappointed to announce that on April 25, NSF terminated a $1.5M PhET grant – our Pathways to Open Source Ecosystems Phase II grant for advancing PhET’s SceneryStack project. Learn how this impacts our work and how you can help: bit.ly/PhETNSF2025

submitted 25 days ago • 6 comments

I really appreciate how clear this video is -- a nice look at Black Holes and Hawking Radiation. Just about every time I had a question, that's exactly what they talked about next. Just in time for #BlackHoleWeek (2021). youtu.be/isezfMo8kWQ

submitted 25 days ago • 1 comment

Happy #BlackHoleWeek! To celebrate, we’re releasing the highest-resolution ray-traced still from one of our simulations to date. This skeet has a low res preview. To zoom into the full 43,200 × 21,600 pixel rendering, head to www.black-holes.org/2025/05/07/B... 🧪⚛️🔭

submitted 25 days ago • 3 comments

For #BlackHoleWeek, why not go explore spacetime around a black hole? Oh... because it'd be incredibly dangerous? Good point. Well, how about you use this (nearly) perfectly safe simulation. testtubegames.com/blackhole.html There is always a small risk of collapsing into a simgularity.

submitted 26 days ago • 0 comments

It's #BlackHoleWeek! Share with us in the comments your most creative black hole art designs! 🖼️: An artistic take on a neutron star–black hole merger by Carl Knox, OzGrav-Swinburne University 🔭🐚🧪

submitted 26 days ago • 3 comments

Is it #BlackHoleWeek already? Always catches me by... surprise... Anyway, now that I've got you deciphering a pun - here's my challenge for you. Find the Photon Sphere* around this black hole: testtubegames.com/launcher.html (*The place where light can circularly orbit a black hole.)

submitted 26 days ago • 0 comments

For #BlackHoleWeek, why not go explore spacetime around a black hole? Oh... because it'd be incredibly dangerous? Good point. Well, how about you use this (nearly) perfectly safe simulation. testtubegames.com/blackhole.html There is always a small risk of collapsing into a simgularity.

submitted 26 days ago • 0 comments

Published my WebGPU Particle Life simulation online! Obviously it requires WebGPU support, and it's quite resource-demanding, so I've set the particle count to 64k for now. Also it probably doesn't work on mobile; will fix later. Enjoy: lisyarus.github.io/webgpu/parti...

submitted 26 days ago • 5 comments

Is it #BlackHoleWeek already? Always catches me by... surprise... Anyway, now that I've got you deciphering a pun - here's my challenge for you. Find the Photon Sphere* around this black hole: testtubegames.com/launcher.html (*The place where light can circularly orbit a black hole.)

submitted 26 days ago • 0 comments

#GravitationalWaves provide a unique way to study black holes This Orrery (by Zoheyr Doctor) illustrates the diverse black hole binaries and neutron star black–hole binaries from our O3b run. More massive binaries are shown as orbiting more slowly #BlackHoleWeek 🔭

submitted 27 days ago • 1 comment

A fascinating video about how a song could crash laptops. Enjoyed the mix of music theory, science, and history going on here. youtu.be/-y3RGeaxksY

submitted 27 days ago • 1 comment

This tiny spider has binoculars for eyes and a brain so efficient it puts supercomputers to shame. What is the jumping spider Portia, and why is it so interesting to neuroscientists, roboticists, and practitioners of AI? 1/10 ⚛️🧪

submitted 28 days ago • 1 comment

A neat little interactive that helps make it clear why a reflecting telescope makes things look bigger. javalab.org/en/cassegrai...

submitted 29 days ago • 0 comments

Variables are more appealing when they're emojis

submitted 31 days ago • 0 comments

It's May so I can officially say that I, ROCK comes out NEXT MONTH!!!! Grab your nearest rock hound and take a hilarious and heartfelt tour of Earth's geological forces! #KidLit #STEMLit #Edusky #PictureBooks

submitted 31 days ago • 0 comments

Ooh, some interactive Moire Patterns. One of my top 10 favorite ways to feel disconcerted. www.geogebra.org/m/DQ7WaXuK

submitted 29 days ago • 0 comments

Them: Just jump, you'll be fine. Me:

submitted 30 days ago • 0 comments

Them: Just jump, you'll be fine. Me:

submitted 30 days ago • 0 comments

Fun little side-by-side comparison in gravity + gas-forces simulation I've been working on. About 16k particles interacting on each side. Picture hydrogen atoms floating in space. The "fluid" sim on the left includes viscosity, the one on the right does not.

submitted 30 days ago • 0 comments

To answer the question - let's look at forces you'd expect around... a) A single star of mass 36 b) Three stars each of mass 12 The one on the left is a simple 1/r^2 force. The one on the right is... not. The forces for (some of) the inner test masses are higher than you'd expect.

submitted 31 days ago • 0 comments

Have you ever seen a pine tree grow from seed? I hadn't before this video. youtu.be/a4kr4SxMNnA

submitted 31 days ago • 0 comments

To answer the question - let's look at forces you'd expect around... a) A single star of mass 36 b) Three stars each of mass 12 The one on the left is a simple 1/r^2 force. The one on the right is... not. The forces for (some of) the inner test masses are higher than you'd expect.

submitted 31 days ago • 0 comments

Okay, this is pretty cool - want to visit a science museum right now? Here. Go walk around a virtual model of the Oxford Museum of Natural History. discover.matterport.com/space/oxford...

submitted 31 days ago • 0 comments

"Electricity Misconceptions Spread by K-6 Textbooks" by Bill Beaty. Still one of my favorite sites - enter feeling like you know a lot about Electricity... and leave having uncovered a few more misconceptions you had. Written like a screed, but that's part of the charm! amasci.com/miscon/elect...

submitted 32 days ago • 0 comments

One of my favorite labs is the “pendulum to a song” lab which is a sample activity now in the AP Physics 1 CED. One of my students took it to a different level. Turn up the volume 😀 #iteachphysics

submitted 32 days ago • 0 comments

Some good #iTeachPhysics problems in here from @learnwithsherlock.bsky.social

submitted 33 days ago • 1 comment