Category Archives: fun

Stable, asymmetric dice

A while ago I set about trying to find asymmetric dice that might be fair. I’ve put a lot more work into it, but mostly because there’s been a lot of frustrating interesting tangents. Here’s the main thrust of the … Continue reading

Posted in fun, mathematica, physics | 3 Comments

Fair Asymmetric Dice, getting there

Ever since my son and I worked on whether different types of 20-sided dice were fair I’ve been thinking about whether there might be some oddly shaped dice that could still be fair.  I’ve watched these three numberphile videos and I’ve looked … Continue reading

Posted in fun, mathematica, physics | 6 Comments

No connections

Driving home today I heard a great story on NPR. I liked it so much that I thought I’d put it here to remind myself about it. I might have forgotten some of the details, but I think I still … Continue reading

Posted in fun, teaching, technology | 1 Comment

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