Creative Science Centre: Chaotic Led Flashers?

This comprehensive resource has a collection of creative science ideas and challenges. The goal is to guide teachers and students toward developing more creative science projects.

An extensive collection of links to resources on longboards and skateboards, and science projects with them.

Explains the design of two circuits that can flash an LED from a single 1.5V battery. A typical LED needs 2-3V to work properly and both these circuits include a voltage doubler to boost the voltage to drive the LED. Both circuits will...

This very simple, but effective generator shows in a wonderfully engaging way the fundamentals of electricity generation. The generator is made from a coil of wire wound around the outside of a plastic 35mm-film can. The two coil ends...

There are so many different types of LEDs on the market (even of the same size and color), how do you tell the difference between them and which one you should use for your particular application? The simple tests descibed here compare...

Explains the design of circuits that can be used to multiply and rectify AC voltages, e.g., to increase voltage in order to light an LED more effectively and get a brighter light from it.

A very simple electrical resistance thermometer is described that can be built, calibrated and tested in a school laboratory at virtually no cost. With it, flames, focused sunlight and other high temperature sources can be probed. The...

A simple demonstration is described which shows how a transistor works. By including the audience into the actual circuit and by lighting LED's it shows the potential of the simple transistor amplifier. The extension to two transistors -...

Described is a simple low cost home-made device that converts the radio wave energy from a mobile phone signal into electricity to light an LED. No battery or complex circuitry is required. The device can form the basis of a range of...

Presents plans for making a shortwave crystal set radio that is capable of receiving stations from around the world with a good antenna and earth connection.