This is what happens when political appointees, in charge of an agency that uses science, don't understand basic physics. Good grief, what a waste of resources.

Not a change of course, he simply lied before.

(for later calculations of the tension). The rope was only 6 m long, students were clearly shocked I reached about a foot (height went higher than that, angle was about 15 degrees).

The rope pull demo went well today. Two students pull hard horizontally on the ends of a rope, I stand in the middle and lift up the rope. For good measure, I stand on a force plate and we measure the height I pull the rope and the length 1/2

DARTMOUTH OUT! We are at 6 rejections. Vanderbilt is the only private left standing "considering" the compact along with UT Austin and the University of Arizona.

Well-deserved.

Finally we get to vote for PSC. Choose wisely.

Nice example of angular size.

#iTeachPhysics Using this in class next week for uniform circular motion.

Kristi Noem should never have been confirmed after this. It ended up being a perfect representation of what she would do.

It appears that my employer, Dartmouth, one of the Trump 9, has said no to the compact. All the better given that our president is cited within it. But she’s saying no. Count the small victories when they come.

I think for me the most compelling answer for "why fund basic research?" (and the one most relevant to the people doing the work) is that humans are curious and finding stuff out makes us happy and fulfilled. Science is a thing humans like. Life would be more dull and sad if we didn't do it. end/🧵

'Nuff said.

🚀 NEW PICUP WORKSHOP THIS FALL 💻 2025 UMN Twin Cities + PICUP workshop 📆 November 8, 8:30am – 4pm 📍 Tate Hall, UMN Twin Cities Campus ✍🏼 REGISTER TODAY! www.compadre.org/PICUP/events... #iteachphysics #iteachastro #physicssky #astrosky #iteachcs

James Talarico flips the script on MAGA

Regardless of the disgraceful nonsense we will likely hear from this administration in the coming days on vaccine “recommendations,” Americas healthcare insurers issued a joint statement tonight saying coverage for Covid and flu shots will remain unchanged from prior years. Speaks for itself.

Nobel laureate Irène Joliot-Curie was born 128 years ago today. She and her husband co-discovered artificial radiation in 1934, for which they were awarded the Nobel Prize. She was also the first woman to become a minister in France. tinyurl.com/3je86wjm #WomenInSTEM #ChemSky #Physics 🧪

If you are a physics educator in the Chicagoland area (or anywhere else) and you are willing to travel, and you want to energize your physics courses? Attend this #PICUP Workshop! This workshop is for physics teachers from high schools, 2 & 4-year colleges, & universities. ow.ly/fwBL50WVnU5

Just gonna drop this here tonight wapo.st/3VKVNT2

Atlanta area physics teachers, please take note. #iTeachPhysics

The Supreme Court just ruled this meme is constitutional.

When you go to Home Depot, make sure to wear a suit and tie and have your US passport peeking out of your suit jacket in lieu of a pocket square and the masked men will typically let you proceed quite quickly to the lumber department. - Brett Kavanaugh

AAPT joins other #STEM professional societies in supporting U.S. researchers, educators, and academics. Read more at unitedsciencealliance.org. #Science #Education

Okay, I think the brisket on the grill has hit The Stall. Apparently the stall was not really understood until about 10 years ago. Various ideas such as collagen changing to gelatin, but some physicist found out it was evaporative "cooling". Just in time for Thermal Physics tomorrow. 1/2

In April, the AAUP & our Harvard chapter sued the Trump admin for demanding that Harvard censor speech & restructure core operations or else face $8.7 billion in funding cuts. We hope this decision clarifies to Harvard’s administration that bargaining w/ tyrannical authoritarians is unacceptable.

Attend the 2025 Atlanta Area PICUP DICE Workshop happening on September 13th at Spelman College! Learn more and register today! Early Bird registration ends September 4th. ow.ly/KTFm50W4MZt #PICUPDICE #PhysicsEducation

Oh, the optics homework in that picture...

The NRA is a terrorist organization.

With misinformation nearly everywhere, one professor tested a simple fix of 150 minutes of fact-checking homework – and it worked, boosting the students’ ability to spot misinformation by nearly 20%.

Yes yes yes. I wish the leadership of my College understood this (yes, I keep telling them).

this iconic advertising copywriter named Kathy Hepinstall Parks died over the weekend and I wanted to share something from her website I thought Bluesky would like

Well, the new tankless water heater was not cheap, but I got a nice in-class problem for Thermal Physics out of it, along with a good dose of unit conversions (no, I did not ask the students to start from the definition of a BTU, they can look up the conversion).

#iTeachPhysics So much there...

The regime is truly unhinged. Shields? So many agents? Over a sandwich from a chain? Oddly, this looks less than tough...

"Claims of ChatGPT's effectiveness for learning are currently unfounded." Say even researchers who themselves conceive, build and evaluate AIED systems for learning... onlinelibrary.wiley.com/doi/10.1111/...

Just saw a TV commercial for what seemed to be a "less-lethal" weapon system?

A"I".

If you ask a historian to do 6724x10783 in their head, they will say, "I have no fucking idea." WHICH IS ACCURATE. Then they'll go to a calculator and give you an accurate answer. If you ask an LLM, it won't tell you "I have no idea," it'll confidently give you a wrong answer. WHICH IS INACCURATE.

I am so sick of the “have ai do a thing and then have students check the output.” 🤦‍♂️ No, just have students do the thing without putting the unreliable machine in the middle.

#aaptsm25 Must stop revising 9 AM talk...

#aaptsm25 #iTeachPhysics #optics Looking in the mirror at the hotel, I see squares around my pupils. The mirror has a light around its perimeter, about 3 feet on a side. I'm about 2 feet from the mirror. My eye is about 1 inch across. Sometime I suppose I can figure the curvature of the cornea.

Heading to #aaptsm25 today. First one in many years.

their misplaced belief that statistically something good must be in there with enough random genAI output is legit jamming up human review pipelines / contests / new release listings etc, especially hurts people not established yet, it's only getting worse faster since this happened two years ago 😭

This is an astonishingly good metaphor.

Setting aside the ethical and environmental concerns of AI, I'm really offended by a bunch of elite dudes telling us our minds aren't good enough when they've had to steal everything human minds have created to create their pretend mind and it doesn't even work right!

Another raindrop falling through the rainbow (blown up from a frame of a video), this one came out nice.