San Jose 2004
Paul Doherty and Don Rathjen
These are Paul's activities.
Silent Collisions, two donut magnets on a pencil can be used to illustrate elastic and inelastic collisions.
Magnetic Atmosphere Model, balance five magnets on a pencil and model the atmosphere.
Electrostatic Levitation, use an electrically charged PVC rod to levitate a fuzzy nylon "hydra"
Flying Tinsel, you can also levitate tinsel.
Stop the presses: at the end of the workshop a teacher brought up a thin white plastic supermarket bag, we cut out a piece an inch wide and two inches long, rubbed it with wool and flew it over a charged PVC rod!
Repel a Grape, neodymium magnets will repel a grape via diamagnetism.
Magnetic Tape, Bits and bytes, use pieces of cassette recording tape to investigate magnetic recording.
Magnetic levitation in copper, you can "fly" a neodymium magnet between two slabs of copper by using a second neodymium magnet.
Audible Magnetic Domains, you can hear the magnetic domain walls move insde a piece of metal by using an amplified speaker and a coil of wire.
Scientific Explorations with Paul Doherty
16 Oct 2004