This activity introduces the creation of afterimages formed from a prolonged stimulation of the eye’s retina. A flashlight, paper, and tape are used to produce afterimages viewed on one’s hands and a more distant wall. ...

The activity provided on this web page offers students a chance to understand how mirrors can be used to create the appearance of defying gravity. With an easy setup, these activities can make students appear to perform...

This site contains an activity demonstrating how one's eyes influence each other and what occurs when two eyes receive conflicting information. The participant looks through a paper tube with only one eye to perform...

This lesson, presented by the National Nanotechnology Infrastructure Network, covers the diffraction behavior of light waves. Students will discover how CDs and DVDs contain regularly spaced micrmeter sized features that...

This activity demonstrates the additive properties of light. Different-colored lights are shown on the same spot on a screen so that the reflecting light is white. Colored shadows, however, can be made by holding an...