New #iTeachPhysics Simulation: Rolling and Slipping!
Have you ever wondered what would happen if you spun a 13 foot tall wheel of cheese at 100 rpm and set it loose on the ground? Neither have I!
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Posts by Dan Burns
I prefer the pesto ones
Two top tier geeks!
Nice, I see the propeller
Somehow I missed this when it aired in 2019. But I’m on it now. @philplait.bsky.social and others recount how humans came to understand the heavens. A great story, well told.
And I have questions.
Ancient Skies - 1. Gods and Monsters
www.teacherspayteachers.com/Product/Anci...
“Fly” through Hubble's view of the Trifid Nebula, part of its anniversary package! 🥳 The video “floats” over the ridges of gas and dust and moves up toward Herbig-Haro 399, at the top of a brown cloud that resembles a head with horns. 🔭
That was Team ROTTTA, Right On Time To The Airport
I see @pbohacek.bsky.social! Any chance you are working on a Franck–Hertz experiment sim?
Time to move to Antarctica
It’s their way of saying you are needed and appreciated
Bringing Physics to Life with Smartphone Sensors: A Hands-On Workshop Facilitator: David Rakestraw Time: Saturday — PM Participants will explore physics concepts through hands-on investigations using smartphone sensors such as accelerometers, magnetometers, and gyroscopes. Activities demonstrate how everyday technology can support engaging laboratory experiences for students.
AI as a Co-Investigator: Revolutionizing Physics Education Facilitator: David Rakestraw Time: Sunday — AM This workshop explores how AI tools can act as collaborative partners in physics education and research. Participants will examine practical applications of AI for data analysis, experiment design, and supporting student learning.
I will be helping LLNL scientist Dave Rakestraw conduct these two workshops. See you there.
Check out workshops happening on July 18-19 at #AAPTSM26! These workshops present an excellent opportunity to gather with colleagues, learn new teaching techniques, and engage in thoughtful discussion. Visit ow.ly/YkJl50YMBhW and add to your registration. #AAPTConference #ITeachPhysics
Oh man
A photo of Kieron I took as part of some reference for WicDiv years ago, in a park in London, by a bench on some grass. Over the horizon, I added the words IF TRUE so that they appear enormous across the London skyline. This was funny to me when I first made it, and it's still funny to me now, so you're seeing it again.
Huge if true
I like when they suddenly stop the rotation of the space station too. I also showed this to physics classes during circular motion. The actor's attempt to portray weightlessness (free fall) is amusing. I hope there is an emergency stop button on the first rotating space station. #ITeachPhysics
It is a bit campy but it is hard to beat the skydiving scene at the start. Best "How to Borrow a Parachute" instructional video ever. I used to show it to my physics classes when we studied air drag. #ITeachPhysics
Spectacular view of the Lake Clementine Dam on my hike today. There was so much mist that a full arc of a rainbow formed. This is near the American River Confluence area near Auburn, CA. Sound on!
Lake of the Pines California
Space Week: Speaker Presentations on the CS&T Stage Join the MA Space Consortium and the Museum’s Center for Space Sciences for this annual statewide celebration dedicated to making astronomy and space science programming accessible to all. This year, the future of human spaceflight takes center stage as we explore the theme of 2026 MA Space Week, “Reaching the Sky.” Throughout the week, you’ll hear from local researchers and space science communicators as they share how we are working to keep astronauts safe, design more sustainable missions, and make reaching the sky possible for more people than ever before. Grounded in discovery and inspired by curiosity, these talks invite visitors of all ages to imagine what it takes to journey beyond Earth - and what the future of space might look like for all of us. Presentations take place on the Museum's CS&T stage in the Blue Wing, Main Level. Daily Schedule: Tuesday, April 21, 3:00 PM Devjoy Dev (MIT / Museum of Science, Boston) Topic: How to Make Sure Astronauts Reach the Sky Healthy Wednesday, April 22, 3:00 PM Maya Nasr (Harvard University) Topic: How to Reach the Sky Sustainably Thursday, April 23, 3:00 PM Kyle Horn (AstroAccess) Topic: How We Reach the Sky: Stories from a Journey to Enable Increased Access to Space Friday, April 24, 3:00 PM Nazmus Nasir (ATMoB) Topic: How to Use Astrophotography to Reach the Sky Sunday, April 26, 3:00 PM Alissa J. Haddaji (The Space Consortium / MIT) Topic: How to Protect Ourselves From the Sky, an Introduction to International Planetary Defense If you wish to register for multiple dates, please add one date to your cart then come back to this page to add more before checking out.
For people in the Boston area, I'll be giving a talk at the @museumofscience.bsky.social on Fri Apr 24th at 3 pm. General admission to the museum is free after 2 pm at the following link: tickets.mos.org/events/5ad44...
#astronomy #astrophotography #Boston #Space #SpaceWeek
Congrats to your student! Those are all great options, they can’t go wrong as an undergrad. I suggest they do some online research and contact each physics dept. to find out about UNDERGRAD research opportunities. That is very different from overall physics reputation of a school.
An interesting #sunset, followed by the setting #Venus and crescent #Moon. #timelapse #astronomy
She is good and she says mass unlike the title. The Russian device determines mass from the decay constant of the oscillation, not the frequency. The US device applies a known force and measures the resulting acceleration. Another device measures centripetal force on smaller items, not astronauts!
Clowns may be in trouble though
However, the sam- ples could not be precisely dated. Before 1906, the last large quake to hit the northern San Andreas Fault was believed to be in the vicinity of 1800, with an uncertainty range of 1650 to 1930.
Pretty sure they could narrow it down more than that! eedition.sfchronicle.com/infinity/art...
Comet with a bright nucleus and wispy tail with streamers rises over a ridge of trees and a water tank. Taken with an Askar SQA55 and modified Sony Alpha 7 III camera. Comet image, 15s at ISO 1250. Foreground image, 15s at 3200 ISO. Processed separately and composited in Photoshop.
Success with Comet C/2025 R3 PanSTARRS this morning! Clouds will prevent future attempts. It reaches perihelion Sunday, swings around the Sun and becomes a southern hemisphere object. This is a composite of a tracked image of the sky and untracked foreground image. Details in ALT. #astrophotography
This is Achrioptera manga, a giant phasmid or stick insect native to Madagascar.
The specific epithet, "manga" means blue in Malagasy & it's not hard to see why. Only males are blue.
The tiny back wings ("alae") are an example of brachyptery: they're useless for flight, but have other functions.
a spiral galaxy tilted between edge-on and face-on. bright knots of blue star forming regions trace the spiral arms. The best 249 out of 420, 60 s exposures (it was windy!) were taken with a Meade 8" SCT and ZWO ASI2600MM camera, stacked and processed with Astro Pixel Processor, StarNET++, and Photoshop.
Last night's target, NGC 4236 (Caldwell 3), is a barred spiral in Draco and is a member of the M81 galaxy group. It's on the outer edge of the group at a distance of 14.5 MLY. NGC 4236's low surface brightness makes it a challenging target. Details in ALT. #astrophotography