Subjects: Physics

Examines the use of a compass needle in navigation and links its behaviour to the Earth’s magnetic field. Explains how other common magnetic objects work and identifies the connection between an aurora display and magnets.

The concept of electromagnetism is introduced and investigated. The principles discussed are then applied to the workings of a malfunctioning speaker.

Viewers apply motor-effect principles to the design of electric DC motors. A quantitative investigation is performed to determine the force on a conductor in a magnetic field. Design, advantages and applications of DC motors are presented.

Provides additional information, experiments and problems on concepts presented in the video programs.

Explores benefits and risks in personal safety equipment, and develops a generic Risk-Benefit Assessment model. The model is used to reach personal decisions regarding the use of bicycle helmets.

Provides additional information, experiments and problems on concepts presented in the video programs.

Historic views, from the two-fluid concept of the Greeks to Franklin’s single positive fluid, explain electrostatic charge in terms of electrons. Discusses static charge build up, dangers of uncontrolled discharge, and controlled discharge.

Provides additional information, experiments and problems on concepts presented in the video programs.

Introduces charging by conduction and induction by showing how Rice Krispies are attracted to a charged rod and then fly off. Explains a Van de Graaf generator and presents interviews with a rock climber, photocopier technician and aerospace engineer.

Provides additional information, experiments and problems on concepts presented in the video programs.