EM4.1 Grass Seeds and Electric Fields

An impressive visualization of electric fields. Sprinkle grass seeds on the top of a glass plate, and use the Van de Graff generator ro charge up various metal configurations glued to the underside of the glass plate: 2 point charges (dipole field), parallel plate capacitor, concentric circular capacitor, and Faraday's ice pail. Watch the induced dipoles within the grass seeds line up with the electric fields. Can be visualized using the overhead projector.

Equipment Location: Shelf D6-2