Summary: Beginning with lodestones and ending with MagLev trains, this program introduces viewers to magnetic theory, magnetic fields and poles, the Earth as a magnet, electromagnets and electric motors, and magnets in everyday life. Experiments, animated graphics, and footage of applied magnetism are used to reinforce these essential scientific concepts.
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2006
View online at AVOD
Summary: This program explores the basic principles behind the operation of AC and DC motors. An explanation is given about how one or more fixed magnets, either permanent or electromagnetic, can cause linear movement or rotation of a current-carrying wire. A hand rule is developed to predict motor force. Motor torque is explained as a prelude to the practical design of a direct current motor. Specific...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program uses a solar-powered toy car; magnets, coils of enamel wire, a small bulb, and a propeller; copper wire; a galvanometer; a screen coil and a swing coil; aluminum rods and two dry cell batteries; liquid nitrogen, a superconductor, and a neodymium magnet; and a montage of different power plants to demonstrate the following concepts: dynamos; electromagnetic induction; how generators...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2005