Monthly Archives: April 2012

Helmholtz coil approximations

Posted on April 22, 2012 by Andy Rundquist

My friend Joss Ives got this blog post rolling with this tweet: When measuring the radius of a Helholtz coil which has some decent thickness in the r-direction, do you measure to inside, outside or middle — Joss Ives (@jossives) … Continue reading →

Posted in mathematica, physics | 6 Comments

unbalanced 20-sided die?

Posted on April 8, 2012 by Andy Rundquist

My son recently bought a 20-sided “spin down” die. Here’s a similar one: It’s really useful in the game “Magic The Gathering” because you use it to keep track of your life points. My other son and I, however, were … Continue reading →

Posted in fun, mathematica, parenting, physics | 2 Comments