Overview

According to its definition, Synergetics is concerned with systems that produce macroscopic spatial, temporal, or functional structures. Autowaves are*a specific, yet very important, case of spatio-temporal structures. The term ""autowave"" was coined in the Soviet Union in analogy to the term ""auto-oscillator"". This is - perhaps too literal - translation of the Russian word ""avto-ostsillyatory"" (= self- oscillator) which in its proper translation means ""self-sustained oscillator"". These are oscillators, e. g. , clocks, whose internal energy dissipation is compensa- ted by a (more or less) continuous power input. Simi larly, the term ""autowaves"" de- notes propagation effects - including waves - in active media, which provide spa- tially distributed energy sources and thus may compensate dissipation. An example which is now famous is represented by spiral or concentric waves in a chemically active medium, undergoing the Belousov-Zhabotinsky reaction. This book provides the reader with numerous further examples from physics, chem- istry, and biology - e. g. , autowaves of the heart. While the Belousov-Zhabotinsky reaction is now widely known, a number of very important results obtained in the Soviet Union are perhaps less well known. I am particularly glad that this book may help to make readers outside the Soviet Union acquainted with these important exper- imental and theoretical findings which are presented in a way which elucidates the common principles underlying this kind of propagation effects. Professor V.

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