I couldn't help myself. I had to do a #videoanalysis of the penalty shootout between PSG and Arsenal. #physics rjallain.medium.com/do-soccer-go...

Here is chapter 7 notes for my #physics course. Circular motion, gravity and stuff like that. rjallain.medium.com/physics-note...

New #physics post - measuring the launch velocity of a @PASCO mini launcher. Homework included. rjallain.medium.com/physics-lab-...

"..the researchers found that students whose instructors were combining group work with lab activities and problem solving, via the SCALE-UP method, performed better on the post-course survey and had meaningful interactions with more of their peers, which is also an indicator of learning success."🎢⚛️

When @nasa posts a cool #artemis video, I have to do a #physics analysis (extra homework included) rjallain.medium.com/the-physics-...

Real world #physics - why some #artemis photos are sideways. rjallain.medium.com/smartphones-...

Bonus - #python included.

Here’s a real world #physics problem that’s also current events. How much does it cost you to drive fast on your commute?

Here are my notes for #physics chapter on conservation of momentum and collisions. Yes, there's #python of course. rjallain.medium.com/physics-note...

More #starwars #physics - is the Death Star II in a geostationary orbit around Endor? If so, how long is a day? youtube.com/shorts/qMUMa...

Here is my giant list of #starwars #physics posts for #starwarsday. Some of these are old and decayed. If you see one you really want fixed, let me know. rhettallain.com/2017/03/19/s...

It's #starwarsDay. In your opinion, what are the TOP lightsaber battles? Here's my slightly older list. rhettallain.com/2019/11/29/t... #starwars

I got a little long, but here is my full derivation of why a hydrogen atom is not like a tiny solar system. #physics #electrodynamics rjallain.medium.com/atoms-arent-...

Here is the poynting vector (yellow) and power flux (magenta area) for an orbiting electric charge (some #physics #pyython I'm working on) Here is my sloppy code www.glowscript.org#/user/rhett....

Here's a quick video analysis tutorial with Tracker and using calibration point-pairs for a video with a moving camera. In this case, it's looking at the acceleration of the #apollo16 lunar rover. #physics youtu.be/qyOSg427w7w

Working on my #physics notes for my summer course. Here is the stuff for Newton's second law and momentum (bonus #python at the end) rjallain.medium.com/physics-note...

So Excited!!! #CosmicPathwaysChicago @rhettallain.bsky.social #ITeachPhysics cosmicpathways.org/2026/04/22/k...

HR at my university sometimes sends out retirement incentive plans. The one they sent me basically says "you make less than the average starting salary for an assistant professor, so we won't give you a package - it would be more expensive to hire someone new than replace a 25 year faculty". Nice.

Video Analysis #physics post - measuring the acceleration of #artemis and #saturnV rjallain.medium.com/video-analys...

I saw this fun question: is weightlessness on the way to the moon the same as the weightlessness in orbit? Here's my #physics answer rjallain.medium.com/is-weightles...

Here are 300 stimulating ideas for Physics Practical Investigations by Dr Richard Walding #iTeachPhysics #Science 🧪 drive.google.com/file/d/1sIW8...

Here's a fun #vpython #python #physics animation showing polarization at brewster's angle #physics

New #electrodynamics #physics video - looking at reflection and transmission of electromagnetic waves. Snell's law and Brewster's angle. youtu.be/_dFKj6OE05I

If you need to take physics for your college degree (algebra-based), I have something for you. This summer, I'm offering an online physics course based on my real-world physics material. Here are the details—let me know if you have any questions: www.southeastern.edu/department-o... #physics

I couldn't help myself. I had to do a #spiderman #physics post from the new trailer. Here I estimate the strength of Spider-Man's webs. rjallain.medium.com/with-great-f...

Attention Science Communicators! We are conducting a survey on the landscape of science communication & need your help gathering experiences. Please send this to #SciComm ppl you know. We want to get as thorough a sense of the state of the field as we can. umiami.qualtrics.com/jfe/form/SV_...

Happy #piday - one of my favorite pi-ism is that pi = sqrt(g). Why?

Here is my lecture on EM plane waves for #electrodynamics #physics. Yes, I include a #python model for a plane wave youtu.be/260PsZEiFuE

From #physics class today (#electrodynamics) plane wave in #python

New #physics post. Would Flash survive a punch from Peter Parker (from the 2002 #spider-man). rjallain.medium.com/peter-parker...

I'm working on my #physics material for the summer session. Here is chapter 4 covering kinematics rjallain.medium.com/physics-note...

New #physics post - #videoanalysis of Kong from Monarch. Spoiler Alert: Kong is only 4 feet tall. rjallain.medium.com/how-big-is-k...

My #physics students were having trouble visualizing spherical coordinates - so I made a #python animation of a surface area integral. youtu.be/ssUSt913nug

In a previous #physics post I discussed how to measure the radius of the Earth using LEGO - well, I finally have data and measured the Earth for myself. #flatearthers can repeat if they want. #astronomy rjallain.medium.com/measure-the-...

I forgot to include power and efficiency on my #physics notes for work-energy. Here is an extra post on that. medium.com/@rjallain/ph...

For #python, I've been trying to use glowscript.org instead of trinket.io. But do you know what's really awesome about trinket? I love that I can write some quick code or calculation and not even save it. In glowscript, you have to save it before you even start coding

I think this #physics #python video turned out better than I expected. Verifying Faraday's Law for #electrodynamics youtu.be/s666ts_DOkg

I created a worksheet tutorial for my #python #faradayslaw calculation ( #electrodynamics #physcis). Here it is in case you find it useful. docs.google.com/document/d/1...

New #physics #python #electrodynamics post. Deeper dive into Faraday's law - using the changing magnetic vector potential to calculate the electric field to show emf = -dPhi/dt rjallain.medium.com/the-boom-mom...

#physics homework. What is the ratio of the star masses? Assume an orbital distance of 0.1 AU - what is the orbital frequency. Build a #vpython model

Working on my #physics material for the summer session (trying not to get behind). Here are my notes on the work-energy principle. rjallain.medium.com/physics-note...

"My soul left my body during the very first seconds of the film.... But my soul didn’t just escape and flee... No, it lingered, glaring at me the entire running time with a mixture of disappointment and anger, like an owner would at their dog after it ate the garbage." deadline.com/2026/01/mela...

I updated my #physics lab material for introduction to numerical calculations with electric field (using #python). Here's the stuff I give the students in case you want to use it. rjallain.medium.com/python-physi...

@rhettallain.bsky.social @wbrianlane.bsky.social From trinket: You will have access to trinket.io as long as it is up and running, until early August. I just released a way to download all of your trinkets at once. Go to My Settings then Data or use the link below. trinket.io/account/data

New #physics post - using the work-energy principle to estimate the acceleration when a guy jumps from a 5th story window into a snow bank. rjallain.medium.com/the-physics-...

Here's a #physics thread for all my #aapt @aapthq.bsky.social friends (and others). Thanks again for the recognition with the 2026 Richtmyer award and for all of the inspiration and ideas from the many physics people out there. aapt.org/aboutaapt/Rh...

New #physics post - putting together notes for my summer course. Here is my chapter on #torque and #equilibrium rjallain.medium.com/physics-note...

Day 3 of #AAPTWM26: Plenary Speaker V: Rhett Allain, and Richtmyer Memorial Lecture awardee. #AAPTMeeting #AAPTConference

New #physics post - is energy conserved with this climber and belayer? Yes, energy is always conserved. medium.com/@rjallain/re...

That time Will Smith helped discover new species of anaconda. Footage of the discovery appears in this 3-minutes clip from NatGeo’s new documentary series "Pole to Pole with Will Smith" arstechnica.com/science/2026...