
The Exploratorium is a science museum dedicated to discovery— a place to go sightseeing among natural and scientific phenomena. We have over 600 interactive exhibits that let you explore, experiment, and experience the interconnecting physical principles of the world around you.This book discusses phenomena demonstrated by exhibits in the Exploratorium. It is not a guidebook in the usual sense, since it does not tell how to operate the exhibits. It is more than a catalog that merely lists and describes the exhibits. This book is a text that can be used to better understand the phenomena behind the exhibits, as well as the exhibits themselves. Although the discussion relates to specific exhibits at the Exploratorium, the phenomena are basic ones and the book can be used independently of this museum. The book will be particularly useful to teachers planning a course or a class visit to the Exploratorium, or to any museum or laboratory where similar demonstrations are available.Throughout the text, names of Exploratorium exhibits, such as Relative Motion Swing, are set in boldface. Names of other books published by the Exploratorium, such as Vision: In the Eye of the Bebolder, are set in italics.