Science Buddies
Science Buddies: Wire Wilt: Light Emitting Diodes Fade as Temperature Increases
In this electronics science fair project, students will investigate how the output of an LED flashlight changes as its temperature increases.
TeachEngineering
Teach Engineering: Traffic Lights
Students learn about traffic lights and their importance in maintaining public safety and order. Using a Parallax Basic Stamp 2 microcontroller, students work in teams on the engineering challenge to build a traffic light with a specific...
Science Struck
Science Struck: Different Types of Diodes
Explains what a diode is and what its purpose is, and describes eight different kinds of diodes.
Science Struck
Science Struck: How Does a Diode Work?
A short ebook (with some embedded ads) that explains how diodes work, some different types, and some applications of diodes.
CK-12 Foundation
Ck 12: Physical Science: Artificial Light
[Free Registration/Login may be required to access all resource tools.] What artificial light is and five different types, and how each type produces visible light.
TeachEngineering
Teach Engineering: What's the Conductivity of Gatorade?
Students use conductivity meters to measure various salt and water solutions, as indicated by the number of LEDs (light emitting diodes) that illuminate on the meter. Students create calibration curves using known amounts of table salt...
Creative Science Centre
Creative Science Centre: Led's
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...
University of Kentucky
Virtual Workshop: The Course on Electricity & Magnetism
On line course on Electricity and Magnetism for graduate credit or professional development, that emphasizes hands on activities you can use in your classroom.
Creative Science Centre
Creative Science Centre: Chaotic Led Flashers?
An interesting project that produces a set of flashing LED's which might show chaotic fluctuations.