Rhett Allain

Physics Notes: Describing Motion and the Kinematic Equations I’m continuing to post my physics notes. This will be for an online summer course (but you get to see them now). So far, I’ve got the…

I'm working on my #physics material for the summer session. Here is chapter 4 covering kinematics

rjallain.medium.com/physics-note...

How Big is Kong? A Lesson in Video Analysis and Scaling Factors Big things are not the same thing as small things. In the show Monarch Legacy of Monsters (on Apple TV) we seen King Kong (or just Kong as…

New #physics post - #videoanalysis of Kong from Monarch. Spoiler Alert: Kong is only 4 feet tall.

rjallain.medium.com/how-big-is-k...

Math Methods: Spherical Coordinates, Integrals, and Python YouTube video by Dot Physics

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

youtu.be/ssUSt913nug

Measure the radius of the Earth using LEGO bricks and a smartphone. Yes, the Earth is spherical. We know that. We all know that — or at least we should know that. I mean, there’s tons of evidence just in…

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-...

Physics Notes: Work, Power and Efficiency In my previous notes, I went over the work-energy principle. However, I realized I left off some stuff about power and efficiency. This is…

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

Electrodynamics: Modeling Faraday's Law with Python - Part 2 YouTube video by Dot Physics

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

youtu.be/s666ts_DOkg

Faraday python Faraday’s Law and Python. In this tutorial, we are going to model a loop with oscillating current and the induced emf on a nearby square loop. Faraday’s Law and the Electric Field In integral form,...

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...

The “Boom” Moment: Using Python to Show Faraday’s Law Always Works In introductory physics courses, Faraday’s law goes something like this:

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

Right now, you can still use trinket. There's still glowscript.org

Hopefully something will get worked out in the long run also

Physics Notes: Chapter 3 The Work-Energy Principle This is a continuation of my physics notes for the summer course. You can find chapter 2 here. Yes, I should point out my unique ordering…

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...

‘Melania’: What The Critics Are Saying About Amazon’s Controversial Big-Budget Documentary 'Melania' reviews: the critics are having their say on the expensive Amazon documentary...and it may be hard to find a worse reviewed film this year.

"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...

Lab: Python and Electric Field Lab: Python and Electric Field In this lab, we will use python to create a numerical calculation that determines the electric field due to a charged rod and other charge distributions. Welcome to py...

I have a google doc version that might be useful.

docs.google.com/document/d/1...

Python Physics Lab. Calculating the Electric Field due to a Charged Rod Note: The following are the instructions for my introductory calc-based physics lab. In this case, we are using python to calculate the…

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...

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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

The Physics of a Dangerous Jump. Fifth Floor to a Snow Bank. Sometimes people do some silly things. In this case, a guy jumps out of a window from the 5th floor into a pile of snow. It seems he’s OK…

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-...

Thanks!

Thanks!

Thanks!

thanks! we all inspire each other.

Thanks Katie!

What Happens to Physics When A.I. Makes a Demo Video? People use AI for all sorts of things. It’s possible to make something useful stuff — but you can also make silly stuff. So, how well is…

10. I forgot this one - what happens when #ai makes a #physics video?

rjallain.medium.com/what-happens...

The Physics of Spider-Gwen’s Wall Stand I don’t know much about the second Spider-Verse movie. But I do know that this scene from the trailer shows Spider-Gwen talking to Miles…

9. Last one - the #physics of forces and torque on Spider-Gwen.

rjallain.medium.com/the-physics-...

Could You Use Physics to Wall-Run This Bridge? Everybody loves parkour — it’s like when a human becomes a superhero and does the unthinkable. Oh, you think only Spider-Man runs on walls…

8. How fast would you have to #parkour run on this curved bridge? #physics

rjallain.medium.com/could-you-us...

How Can a Collision Conserve Momentum, But Not Kinetic Energy? When two objects interact in a collision, momentum is conserved where momentum (p) is defined as the product of mass (m) and velocity (v)…

7. How can a collision conserve #momentum, but not #kineticenergy? Modeling #physics collisions with #python

rjallain.medium.com/how-can-a-co...

Were the Fights in The Phantom Menace TOO Fast for Film? Or Were They Too Slow? I ran across a video on YouTube — it was about Ewan McGregor and Star Wars, so I was legally required to watch it. Check it out.

6. Is Ewan McGregor really too fast to be Obi-Wan? Another #starwars #videoanalysis

rjallain.medium.com/were-the-fig...

Fantastic Four Physics: Could You Throw Someone (or some Thing) into Space? Preemptive notes: Yes, I’m going to get to the physics but there’s some important stuff to discuss first:

5. Could you throw someone into space? (spoiler alert - no). A #physics analysis from #fantasticfour - #python included.
rjallain.medium.com/fantastic-fo...

Measure the Speed of the ISS With Your iPhone Using just the technology in your pocket, you can gauge the velocity of the space station as it zips across the night sky.

4. Measuring the speed of the #ISS with a smart phone (this one is on @wired.com )

www.wired.com/story/measur...