Category Archives: physics

Critical Disagreement

I’m just wrapping up my time spent at a really great conference that’s all about the First-Year Experience for students in college. I’ve got lots of thoughts running through my head, including lots of cool ideas for a large part … Continue reading

Posted in dean, physics, teaching | 2 Comments

Mass changing orbits

A few weeks ago my good friend John Burk posted some intriguing questions about what happens to planetary orbits as the sun loses mass (all that heat has to come from somewhere!). I’ve been thinking about it ever since and … Continue reading

Posted in general physics, mathematica, physics | 2 Comments

Snow wave

Earlier today I posted this pic and asked a question about it on twitter: What determines the wavelength of the snow pattern? pic.twitter.com/KqPKla2IIJ — Andy Rundquist (@arundquist) December 10, 2017 If you click through you’ll see lots of great ideas. … Continue reading

Posted in physics, teaching, Uncategorized | 7 Comments

Propellers with rolling shutter

I really loved Smarter Every Day’s cool video about propellers shot by digital video cameras: I especially like how he stuck with it over several years! I liked the explanation a lot about why the propellers take on such weird … Continue reading

Posted in fun, math, mathematica, physics, Uncategorized | Leave a comment

Helium whistling

Earlier today my son asked me a question I didn’t know the answer to. So I took to twitter: son asked if inhaling He raises you whistle. I say yes but I'm not sure. Anyone know? — Andy Rundquist (@arundquist) … Continue reading

Posted in fun, physics, teaching, twitter | 3 Comments

Blooming energy

Today I saw that the tree outside my office window had blossomed over the weekend: So I got to wondering how much energy it had used to do that. I asked the question on twitter this tree sprouted over the … Continue reading

Posted in fun, mathematica, physics, technology | 3 Comments

Lasers bouncing inside stuff

I’ve written before about how I sometimes like to imagine what would happen if you shot a laser in a fully mirrored room. Back then I did a bunch of cool stuff with flat walls, mostly by calculating the distance … Continue reading

Posted in fun, mathematica, physics | 3 Comments