The world of complex numbers is explored through mini lessons, interactive examples, applications and demonstrations. Topics covered include definitions, basic operations, graphing, different forms of complex numbers, products,...

This site contains comprehensive information about herbal remedies, including current research, common uses and health benefits, guidelines and historical information.

This British website is home to a not-for-profit group promoting alternative democratic voting systems. Students studying representative government can examine if Canada's current First-Past-the-Post system best suits Canada's changing...

Solar power is cheaper and more sustainable than our current coal-fueled power plants, so why haven't we made the switch? The real culprits here are the clouds, which make solar power difficult to control. Alexandros George Charalambides...

A very comprehensive site organized well with many topics dealing with AC circuits.

Keith Richards and Eric Clapton owe their fame and fortune (in part) to electromagnetic induction. (Java tutorial)

This "magneto-electric machine" was the first to turn motion into electricity. (Java tutorial)

A very readable biography of George Westinghouse, Jr., inverntor of the train air brake, among many other things. Find a list of his achievements and a discussion of the development of his inventions.

This electrical engineering activity uses a TI graphing calculator to analyze AC circuits including sine waves, capacitance and inductive reactance, solving series AC circuits, and RMS calculations.

A brief biography from the company that bears his name. George Westinghouse was a prolific inventor, and this biography recounts his many inventions, beginning with the air brake which greatly increased safety on the railroads.

Get the swing of electromagnetic induction with this simple tutorial. (Java tutorial)

Read a brief biography of George Westinghouse, who invented the air brake, making trains much safer. Find out how he was responsible for some very important concepts in the delivery of electricity.

An article discussing the life and career of Nikola Tesla.

The voltage in AC circuits oscillates at a rate known as the frequency. With an oscilloscope, see and measure the length of time between signals, and calculate the frequency of an AC signal.

See how oscillations in an AC circuit don't always rise and fall together.

This simple device uses a few components to rectify the alternating current (AC) from the shake-a-gen, store it in a capacitor and convert it into a steady direct current (DC). The output can be used to run a low power device. It is also...

Brief biographical sketch of Nikola Tesla, famous electrical engineer who invented the alternating current transmission system.

Molecular Expressions at Florida State University offers a java applet to show the a working AC generator.

A short summary of resistance and how it is measured. Including information on AC and DC.

Compares resistance and impeadance using the example of car audio.

Kid's learn more about the science of electricity. How its measured and generated.

Take this 10 question multiple choice quiz on electricity and magnetism.

A general overview of simple AC circuits. Included is a Java applet that lets you change components from a resistor, to a capacitor or coil.

Learn about transformers, how they work, the turn ratio, and their uses.