Preface Introduction 1. The Definition of Infor mation 2. Applications of the Definitions and General Discussion 3. Redundancy in the English Language 4. Principles of Coding, Discusiion of the Capaity of a Channel 5. Coding Problems 6. Error Detecting and Correcting Codes 7. Applications to Some Special Problems 8. The Analysis of Signals: Fourier Method and Sampling Procedure 9. Summary of Thermodynamics 10. Thermal Agitation and Brownian Motion 11. Thermal Noise in an Electric Circuit; Nyquist's Formula 12. The Negentropy Principle of Information 13. Maxwell's Demon and the Negentropy Principle of Information 14. The Negentropy Principle of Information in General Physics 15. Observation and Information 16. Information Theory, the Uncertainty Principle, and Physical Limits of Observation 17. The Negentropy Principle of Information in Telecommunications 18. Writing, Printing, and Reading 19. The Problem of Computing 20. Information, Organization, and Other Problems 21. Inevitable Errors, Determinism, and Information 22. The Problem of Very Small Distances Author Index Subject Index Books Published aby L. Brillouin