The Essence of Chaos
(The Jessie and John Danz Lecture Series)
by Edward N. Lorenz
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Review | Commentary for The Essence of Chaos (The Jessie and John Danz Lecture Series)

Chaos Surrounds us. Seemingly random events - the flapping of a flag, a storm-driven wave striking the shore, a pinball's path - often appear to have no order, no rational pattern. Explicating the theory of chaos and the consequences of its principal findings - that actual, precise rules may govern such apparently random behavior - has been a major part of the work of Edward N. Lorenz. In The Essence of Chaos, Lorenz presents to the general reader the features of this "new science," with its far-reaching implications for much of modern life, from weather prediction to philosophy, and he describes its considerable impact on emerging scientific fields.

Unlike the phenomena dealt with in relativity theory and quantum mechanics, systems that are now described as "chaotic" can be observed without telescopes or microscopes. They range from the simplest happenings, such as the falling of a leaf, to the most complex processes, like the fluctuations of climate. Each process that qualifies, however, has certain quantifiable characteristics: how it unfolds depends very sensitively upon its present state, so that, even though it is not random, it seems to be. Lorenz uses examples from everyday life, and simple calculations, to show how the essential nature of chaotic systems can be understood. In order to expedite this task, he has constructed a mathematical model of a board sliding down a ski slope as his primary illustrative example. With this model as his base, he explains various chaotic phenomena, including some associated concepts such as strange attractors and bifurcations.

As a meteorologist, Lorenz initially became interested in the field of chaos because of its implications for weather forecasting. In a chapter ranging through the history of weather prediction and meteorology to a brief picture of our current understanding of climate, he introduces many of the researchers who conceived the experiments and theories, and he describes his own initial encounter with chaos. A further discussion invites readers to make their own chaos. Still others debate the nature of randomness and its relationship to chaotic systems, and describe three related fields of scientific thought: nonlinearity, complexity, and fractality. Appendixes present the first publication of Lorenz's seminal paper, "Does the Flap of a Butterfly's Wing in Brazil Set Off a Tornado in Texas?"; the mathematical equations from which the copious illustrations were derived; and a glossary. --This text refers to an out of print or unavailable edition of this title.

Booknews, Inc. , 04/01/94:
Lorenz is one of the "discoverers" of chaos and the author of the famous 1972 lecture: "Predictability: Does the Flap of a Butterfly's Wings in Brazil Set off a Tornado in Texas?" (which is included in this volume). He writes here for the lay reader, basing the book on lectures he presented at the University of Washington in 1990. His language, examples, and tone are clear and non- condescending; most of the math is consigned to appendices. Annotation copyright Book News, Inc. Portland, Or. --This text refers to an out of print or unavailable edition of this title.

Published by University of Washington Press
Publication date: April 1996
Dimensions (in inches): 0.59 x 9.24 x 6.14
ISBN: 0295975148
Copyright and disclaimer © 1996-1998,, Inc.