by: Artworks Florida

An animated tour through the history of lighthouse illumination. The Fresnel lens is explained in detail. Showing formulas used in the early 1800s along with animated descriptions of the workings of the Fresnel lens.

Two versions of explanations on one DVD. One is for the technical minded and one version for the rest of us. Educational for all ages.

1998 Driftwood Productions

Price: $29.95