Monthly Archives: October 2014

Ampère’s law

Tomorrow I’m covering we’re working on Ampere’s law in my calc-based general physics course. In preparation I was looking around at different ways to present it, and I realized that I was getting crabby about most of the presentations I … Continue reading

Posted in physics, syllabus creation | 5 Comments

Google moderator use in class

I’ve talked before about how I like to use Google Moderator to have students crowd-source the questions for me in class. I wanted to get down some notes about the conversation I had with my current class about our current … Continue reading

Posted in syllabus creation | 3 Comments

I hate Kirchhoff’s loop law

Sorry for the incendiary title, but it does express my feelings pretty well. When analyzing DC circuits, students are often encouraged to use the two Kirchhoff’s laws: [sometimes called the node law] all current flowing into a node must flow … Continue reading

Posted in physics, teaching | 17 Comments

String resonance

My friend Will posted a cool animation today: GIF of the forced fixed string envelope showing nodes/antinodes for different k values. Driver on left. http://t.co/nCZh93arYa — Will Slaton (@wslaton) October 4, 2014 It got me thinking about the lab we … Continue reading

Posted in mathematica, physics, twitter | 6 Comments