lenses

Examines the sources of natural, artificial, biological, and reflected light and the properties and uses of lenses and lasers.

Traces the history of spectacles over seven hundred years and discusses how lenses are made, how eyes work, and how to choose the right glasses.

Presents projects and experiments demonstrating the effects of mirrors and lenses on rays of light.

Explains how such things as a goldfish bowl, a drop of water, or a magnifying glass act as lenses and describes the appearance of objects viewed through them.

Uses a pair of eyeglasses to introduce children to various scientific concepts, explaining how glasses improve vision, how they are created, how the brain processes images seen through glasses, and other related topics.

Illustrates the properties of light and the production and uses of lenses and lasers. Includes instructions for making a periscope.