Category Archives: mathematica

Finding grains

My colleague asked me to help him out with this image: He needs to know the grain size distribution, and they’ve been having trouble automating this. He knew I’d been doing some work with Mathematica’s image analysis capabilities so he … Continue reading

Posted in mathematica, physics | 4 Comments

Object tracking in Mathematica

I’ve been playing with ImageFeatureTrack in Mathematica over the last few days. My interest is in helping me and my students track the beads on a swinging beaded chain (something we worked on quite a bit last summer). I just … Continue reading

Posted in mathematica, physics | 4 Comments

Visualizing eigenvectors

When I was in undergrad, I dutifully did all my linear algebra homework, not really understanding why. I figured, “if they want me to find a vector or two for a given matrix that satisfies M.v=lambda v , fine, I’ll do it.” … Continue reading

Posted in math, mathematica, physics, teaching, Uncategorized | 5 Comments

Fourier analysis for non-scientists

Yesterday I went on twitter to try to get some help on teaching Fourier analysis for my sound and music class: teaching fourier theory to non-sci-Ss. Goal: that it's possible (to find freqs). not-a-goal: teach slickest way to do the … Continue reading

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

Clock hands symmetry

A long time ago, Dan Meyer took to the twitter-sphere with a question: "When do the three clock hands form three 120-degree angles?" Fun problem from Bowen Kerins. bit.ly/iKCZSz— Dan Meyer (@ddmeyer) June 30, 2011 At the time I thought … Continue reading

Posted in fun, math, mathematica | 4 Comments

Creating supplemental texts

I’m nearing the end of a semester where, for one class, there was no official text. That’s going decently well, though I’ll likely have more to say about that in another post. What I want to talk about here are … Continue reading

Posted in mathematica, syllabus creation, teaching | 21 Comments

Lagrange multipliers

This is a post that builds on my previous notes about the calculus of variations. This week I’m going to teach about modeling constraint forces using the Lagrangian approach, and I wanted to put these notes down for my current … Continue reading

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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

Lake ice thickness

OOPS: I posted this late at night and as I laid down to bed afterwards I realized that I was using the wrong . I was using the one for water, not ice. Ice is larger by a factor of 4, … Continue reading

Posted in mathematica, physics | 4 Comments

Summer project: more twirling chains

There are three main origins of this post: I really like playing with twirling chains. Yet another example of how mixing analytical and numeric approaches in Mathematica can be cool. This seems like a cool distributed project for next summer. … Continue reading

Posted in mathematica, physics, research | 5 Comments