# Category Archives: math

## Snails on a triangle

This post got its spark when I read this These challenging physics problems found by @MrHonner are awesome. mrhonner.com/2013/01/24/cha…— John Burk (@occam98) January 30, 2013 John had also mentioned the list in last week’s Global Physics Department meeting, and I … Continue reading

Posted in math, mathematica, teaching | 3 Comments

## Gyroscopic precession

There have been some interesting things on the interwebs, lately, about rotation, gyroscopes, precession, and helicoptors (all of it brought to my attention, or literally done by, Derek Muller of Veritasium fame). It got me thinking about the modeling I’ve done … Continue reading

Posted in fun, math, mathematica, physics, teaching | 6 Comments

## Turntable spriograph modeling

I was inspired this weekend by this video by Robert Howsare: I’ve seen things like this before and I wanted to explore how to model this in Mathematica. It was fun to explore and it really drove home some ideas … Continue reading

## More brute force probability

Last night a tweep of mine posted this: How many ways can I rearrange the letters ABCDEFGH so that no letter is in its original position? What a deceptively simple question!— R. Wright (@r_w_wright) September 01, 2011 I thought about … Continue reading

## Linear dielectrics (recursion approach)

I’ve been prepping for my fall course, Advanced Electricity and Magnetism for juniors and seniors, taught out of Griffiths great book. One of the topics that I want to deal with better this time around is electrostatics in materials (chapter … Continue reading

Posted in math, mathematica, physics | Tagged | 5 Comments

## When not to cancel common factors

Today I was helping some students of mine get ready for my final. These are science teachers who are in an alternative licensure program for physics. We were talking about the equations for the resonant frequencies in various systems and … Continue reading

Posted in math, physics, teaching | 6 Comments

## Brownie nuts probability

I don’t like nuts. I really don’t like them in brownies. What I want is a way to tell if a particular brownie has nuts in it just by looking at it. That’s what this post is all about. If … Continue reading

Posted in fun, math, physics | 2 Comments

## Brute force probability

Earlier this week, a twitter bud of mine posted the following (WordPress is supposed to embed the tweet on the next line but it’s not working right now – let me know if you know why and I’ll fix it): … Continue reading