High school physics education issues as seen by some American teachers: From content standards to critical thinking
Monday, February 07, 2011
I blew my top today
Floating some pie tins off my head with the help of our Van de Graaff generator. Notice how the tins repel one another and are repelled by my body. One second is turned to four by shooting at 120 frames per second.
And yes, I feel each departure with a slight zap to my scalp.