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GEMA

Birthplace of German Radar and Sonar

Harry von Kroge Louis Brown

$263

Hardback

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Institute of Physics Publishing
01 January 2000
In Germany, the development of the first technologies of sonar and radar were interrelated. Following Christian Hulsmeyer's forgotten invention of the Telemobiloskop in 1904, two Berlin engineers, Paul Gunther Erbsloeh and Hans-Karl von Willisen, developed and built devices to locate targets accurately by reflections with underwater sound and radio waves. In 1934, they found their own company for this work, called Gesellschaft fur Elektroakustische und Mechanische Apparate (GEMA), which became the birthplace of their famous Freya air-warning and Seetakt ocean-surveillance radars.

Harry von Kroge has devoted decades to collecting a mass of statements and widely scattered documentary material about the evolution of GEMA's sonar and radar. GEMA: Birthplace of German Radar and Sonar, the English edition of von Kroge's first important, seminal work, discusses previously unavailable parts of the fascinating story of pioneering efforts in learning to see in the darkness. It relates the fascinating story of how German radar and sonar were developed in the years leading up to and during World War II. The author provides insights into the difficulties encountered on the way to the first promising results in target detection and ranging without optical visibility. The book includes rare technical descriptions as well as information about industrial and scientific cooperation involving secret equipment in Germany before 1945.
By:   Harry von Kroge
Translated by:   Louis Brown
Imprint:   Institute of Physics Publishing
Country of Publication:   United Kingdom
Dimensions:   Height: 254mm,  Width: 178mm,  Spine: 17mm
Weight:   522g
ISBN:   9780750307321
ISBN 10:   0750307323
Pages:   216
Publication Date:   01 January 2000
Audience:   General/trade ,  College/higher education ,  Professional and scholarly ,  ELT Advanced ,  A / AS level
Format:   Hardback
Publisher's Status:   Active
Translator's Preface Foreword by Paul Gunther Erbsloeh Introduction In the Beginning Was an Idea The Originators An Irresolute Beginning The Incorporation of GEMA The First Underwater Sound and Radar Equipment DeTe- and S-Equipment First Surprises Drop the Magnetron, Pick up the Triode A Radar Success with Aircraft Things Move Forward Year of Decisions The Beginning of Production The Time Just before the War GEMA Is Bound to Armaments War Does Not Stop Research Hard but Successful Years Turbulent Times On the Way to Powerful Radar and Sonar Intensification to the Limit GEMA's Constrained Ending Translator's Epilogue Sources Photographs Name Index Subject Index

Reviews for GEMA: Birthplace of German Radar and Sonar

This is a detailed, professional-level book with ample technical coverage of the various sets, production figures for each model, proper citation of sources, and name and subject indexes. It does an excellent job of reconstructing the company's history despite the passage of time and the wartime loss of records. The photographs of the various radar sets are plentiful and of unusually good quality. Tube Collector This will be an essential text for specialists, and an informative read for those with a general interest in the field Dr John Beavis, Transmission Lines If you want to have a well rounded, complete perspective on the birth and development of radar, GEMA: Birthplace of German Radar and Sonar is essential. QST .. a very welcome addition to the literature. Centaurus - 2001 .. the work really is worth reading. IEEE AES Systems Magazine Offers rare technical descriptions as well as information about industrial and scientific cooperation involving secret equipment in Germany before 1945 Book News All in all, the volume is well written, perhaps partly due to Brown's involvement. History of Physics Newsletter, Volume VIII, No. 5 s a detailed, professional-level book with ample technical coverage of the various sets, production figures for each model, proper citation of sources, and name and subject indexes. It does an excellent job of reconstructing the company's history despite the passage of time and the wartime loss of records. The photographs of the various radar sets are plentiful and of unusually good quality. Tube Collector This will be an essential text for specialists, and an informative read for those with a general interest in the field Dr John Beavis, Transmission Lines If you want to have a well rounded, complete perspective on the birth and development of radar, GEMA: Birthplace of German Radar and Sonar is essential. QST .. a very welcome addition to the literature. Centaurus - 2001 .. the work really is worth reading. IEEE AES Systems Magazine Offers rare technical descriptions as well as information about industrial and scientific cooperation involving secret equipment in Germany before 1945 Book News All in all, the volume is well written, perhaps partly due to Brown's involvement. History of Physics Newsletter, Volume VIII, No. 5


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