Producers: Alberta Advanced Education

Focuses on the historic development (Oersted, Ampere, Faraday, Maxwell) of electromagnetic theory. Mini-labs demonstrate the wave-like behaviour of EMR and a research project investigates the constituents of the electromagnetic spectrum.

Defines electric potential and electric potential difference. A ride on a water slide is used to compare the effects of potential difference on charged particles. Explains lightning and particle acceleration using the concept of electrical potential.

Emphasis is placed on how radio transmission and reception occur through a studio model of a transmitter and receiver and interviews with experts. Explores the roles of different parts of the EMR spectrum in telecommunications.

Investigates the shape of electric fields between and around plates, and reveals the uniformity of such fields. Analyses the behaviour of moving electric charges in uniform fields quantitatively, using vector sum calculations.

Explains that different parts of the electromagnetic spectrum are used to explore the universe. Explores the value of satellite-observing platforms, possible solutions to ground-based viewing, and images of an object obtained using different wavelengths.

Viewers are challenged to devise a source of potential difference from provided materials. Investigates electric-current concepts by discussion, laboratory work and interviews. Discusses the change in energy for various loads in an electric circuit.

Discusses the relative energy of electromagnetic waves of different frequencies ii terms of their penetrating ability in human tissue. Focuses on the many EMR devices used in biomedical applications.

Investigates the nature of resistance and safety when dealing with electric circuits. Focuses on the dangers posed by electric current and how to avoid them. Uses Ohm’s law and the power equations to quantify energy transfers occurring.

Traces historical events that led up to the discovery of cathode rays and X-rays. Explains that science often progresses in a haphazard way: one chance observation may lead to a whole new field of inquiry with a completely unexpected set of applications.

Gathers and analyses quantitative data of simple series and parallel circuits. The analysis develops mathematical expressions describing the relationships among current, voltage, resistance and power in electric circuits.