142 Friday 4/19 was a day when it was nice to forget all the things going on in the world and have some fun. Despite the rainy weather, the Van de Graaf generator was working up a nice electric potential, and we successfully made a number of students’ hair stand away from their heads. I love the Van de Graaf generator. (It was also the day of the spring pep rally. My students usually do not wear glitter on their faces.)
Category Archives: potential
110 We experimentally determined equipotential lines in AP physics today, using digital multimeters and carbon-infused conductive paper. It was a small class due to DECA, the musical, and a swim meet, so a bunch of kids will have to make it up, but that should not be too bad. I’ll be putting these pretty drawings on the bulletin board.
107 One of the things I love about Excel is making 3-D surface charts. Here a student has placed three charges and has entered formulas to calculate the electric potential at a grid of points around the region where the charges are. You can find instructions in this pdf by Bob Beichner. The instructions have been published in The Physics Teacher [Phys. Teach. 35, 95 (1997)].