Activity
Science Buddies

Science Buddies: Using Laser Pointer to Measure Data Track Spacing on C Ds, Dv Ds

For Students 9th - 10th
You've probably noticed the colorful patterns "reflecting" from the shiny surface of a CD disk. What you are seeing is actually diffraction of white light, and the rainbows of color are diffraction patterns. In this project you'll learn...
Activity
Science Buddies

Science Buddies: Using a Laser to Measure the Speed of Light in Jello

For Students 9th - 10th
Think it takes expensive, sophisticated equipment to measure the speed of light? Think again. Outfit yourself with a simple handheld laser pointer, a protractor, and Jell-O, and you're ready to get started.
Activity
Science Buddies

Science Buddies: Measuring Sugar Content of a Liquid With a Laser Pointer

For Students 9th - 10th
Here's a project that shows you how to use a laser pointer and some knowledge of physics to figure out the concentration of sugar dissolved in a liquid.
Activity
Science Buddies

Science Buddies: Build Your Own Windmill Generator

For Students 9th - 10th
Build your own windmill and see how the wind can be converted into energy to produce electricity. This science fair project should help you understand the use of wind as a source of alternative energy. The Science Buddies project ideas...
Website
Other

Holoworld: Frank De Freitas Holography

For Students 9th - 10th
This website focuses on Frank DeFreitas including his biography and the science of holograms and the technology of making holograms. Illustrated with examples.
Activity
Exploratorium

Exploratorium: Science Snacks: Vocal Visualizer

For Students 9th - 10th
Create a vocalizer device out of PVC piping and, with the help of a laser pointer, use it to project a visualization of the sound vibrations you make with it.