Exploratorium
Exploratorium: Science Snacks: Diffraction
Demonstrate light bending called diffraction in this activity.
Optical Society
Optical Society of America: Optics for Kids: Make Money Appear Before Your Eyes
A simple experiment that clearly demonstrates how light bends when it passes through water. Accompanied by a good explanation of what's happening, and a link to an article on refraction.
Cosmo Learning
Cosmo Learning: Applied Science and Technology 210: Electrical Engineering
A collection of video lectures from a course that explores the application of electrical engineering topics. Webpage includes twenty-eight lectures from a professor at the University of California, Berkeley. Lectures vary in length and...