Category Archives: fun

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

Best bingo board

My son is in the third grade and his math homework is to play games. The other night we played one that really got me thinking. Each player makes a 4×4 board and puts in any even number between 8 … Continue reading

Posted in fun, math, mathematica, parenting, Uncategorized | 9 Comments

What does the conducting paper lab teach?

At my school we have a lab for electric fields/potentials where they measure potentials at different locations on a piece of conducting paper that has been attached to a power supply (the + lead and – lead of the power … Continue reading

Posted in fun, mathematica, physics | 5 Comments

Evolution of the traveling salesperson

The traveling salesperson problem is a relatively famous math/geometry/computer science problem. The version I’ll be talking about in this post is where the salesperson has to visit several points on a map, minimizing the travel distance. Repeating a point on … Continue reading

Posted in fun, math, mathematica | 11 Comments

Taking it up a notch: nail beds

About a month ago, I had an extraordinary experience: It was Bill Nye standing on me while I laid on a nail bed. Lots of fun, for sure, and I pointed out to the audience that it was the one … Continue reading

Posted in fun, physics, teaching | 7 Comments