Radar, sonar, and holography: An introduction

Engineering & Transportation

Kock, Winston E.

Engineering

Academic Press

The economic growth and strength of a nation are directly related to the ability of its people to make discoveries and their ability to transform these discoveries into useful products. Ninety percent of the increase in output per capita in the United States from 1909 to 1949 has been held to be attributable to technological advances. In this book, we examine the ways in which a number of important new technologies came into being and review the characteristic traits of inventors who create new technologies. Ways are suggested that could enable young and old alike to become more creative, and the various benefits they can thereby reap are also discussed. A high level of creativity is an important asset for a nation, and therefore a knowledge of ways to increase inventiveness can be of great value. University of Cincinnati President Warren Bennis has noted that "creativity is something most of us seem to lose, or let atrophy, as we leave childhood."· To "rediscover it," he continues, "we must find ways of re-creating our sense of wondering why, of heightening, even altering, our consciousness." Thus the earlier in life one seeks to enhance his creativity, the more successful the results are likely to be.

The Creative Engineer: The Art of Inventing

Science & Math

Mathematics

Plenum Pub Corp

An original approach to both pictures and text. with extraordinary photographs that make visible the actual patterns of sound waves, Dr Kock emphasizes the similarities between sound and light waves.

Sound Waves and Light Waves: The Fundamentals of Wave Motion

Technology

DOUBLEDAY

Seeing sound

Wiley-Interscience

As the words holo (complete) and gram (message) connote, the hologram captures the entire message of a scene in all its visual properties, including the realism of three dimensions. It involves the simple process of photographically recording the pattern formed by two interfering sets of light waves, one of these sets being a reference wave. With the introduction of lasers to holography in 1963, real advances in the development of holography began to take place. Dr. Kock's lucid introduction to lasers and holography has now been revised and updated for a second edition. It begins with a clear discussion of wave patterns and coherence. Then the development of lasers is summarized, along with the phenomenon of wave diffraction. Finally, the important subjects of zone plates and the properties of holograms are skillfully described. A new, concluding chapter brings the story up to the present, with a survey of recent advances in such areas as viewing holograms, hologram computer memories, liquid surface holography, synthetic-aperture radar and sonar, large new lasers, fiber optics, etc. Using language that can be readily understood by high school and junior high school students, Dr. Kock has written a brief, yet authoritative volume that should satisfy anyone's curiosity about this burgeoning field. The remarkable discoveries that have already occurred are only a prelude to an even more remarkable future. 84 illustrations, including 8 new to this edition. New preface. Suggested (1981) additional reading. Index.

Lasers and Holography

Physics

Dover Publications

Lasers and Holography: An Introduction to Coherent Optics

Butterworth-Heinemann

Es gibt im Physikunterricht einen klassischen Demonstrations­ versuch zur Darstellung einer wichtigen Eigenschaft des Lichts. Ein schmaler Lichtstrahl von einer Lampe oder einem Projektor fallt in ein mit Rauch geftilltes glasernes GefaB. Wir k6nnen den Strahl sehen, da die Rauchpartikeln einen Teil des Lichts nach allen Seiten reflektieren - oder streuen. Auf dem Boden des GefaBes befindet sich eine glanzende, reflektierende Oberflache, z. B. ein Glasspiegel. Wenn nun der Lichtstrahl auf den Spiegel trifft und reflektiert wird, bildet sich deutlich im Rauch ein V mit dem Scheitelpunkt auf dem Spiegel. Sogar ohne genaue Messung k6nnen wir mit ttnseren eigenen Augen sehen, daB es eine ganz ein­ fache Beziehung geben muB zwischen dem Winkel, unter dem der Strahl auf den Spiegel auftrifft und dem Winkel, unter dem er den Spiegel wieder verlaGt. Eine senkrecht zum Spiegel gezeichnete (oder gedachte) Linie in der Spitze des V wird die Normale genannt. Wenn wir nun die zwei Schenkel des V in Beziehung zu der Normalen betrachten, wird deutlich, daB der Winkel zwischen dem auftreffenden Strahl und der Normalen gleich dem Winkel zwischen der Normalen und dem reflektierenden Strahl ist. Es wiirde jetzt keine Schwierigkeit bereiten, sich an das Gesetz Einfallswinkel gleich Ausfallswinkel zu erinnern, und, waren wir mit Euklids Geometrie vertraut, mathe­ matische Beziehungen zwischen Lichtstrahlen und Oberflachen verschiedener Gestalt auf Grund dieser Gesetze abzuleiten. Aber es besteht ein groBer Unterschied zwischen auswendig gelernten Gesetzen und dem V, das wir mit eigenen Augen sehen k6nnen.

Schallwellen und Lichtwellen: Die Grundlagen der Wellenbewegung (Verständliche Wissenschaft, 109) (German Edition)

Springer

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Books by Kock, Winston E.