John Iovine is the author of several popular TAB titles that explore the frontiers of scientific research. He has written "Homemade Holograms: The Complete Guide to Inexpensive, Do-It-Yourself Holography; Robots, Androids, and Animatrons: 12 Incredible Projects You Can Build, " considered a cult classic; "Kirlian Photography: A Hands-On Guide; Fantastic Electronics: Build Your Own Negative-Ion Generator and Other Projects;" and "A Step Into Virtual Reality." Mr. Iovine has also written extensively for "Popular Electronics, Nuts & Volts, Electronics Now, " and other periodicals.