"Electricity (Television Program)." . . . . . . . . . . . "Establishes some of the fundamental principles of electrostatics, such as negative and positive charges. Illustrations of the electron flow in charged particles at the atomic level show the difference between conductors and insulators."@en . . . . "Educational films"@en . . . . . . . . . . "Conductors and insulators" . "Conductors and insulators"@en . . . . . . . .