. The Bell System technical journal . e System for Television Transmission —M. E. Strieby 438 Stabilized Feedback Oscillators—G. H, Stevenson .... 458 The Discovery of Electron Waves—C. J. Davisson .... 475 Abstracts of Technical Papers 483 Contributors to this Issue 486 AMERICAN TELEPHONE AND TELEGRAPH COMPANY NEW YORK 50c per Copy $ per Year THE BELL SYSTEM TECHNICAL JOURNAL Published quarterly by the American Telephone and Telegraph Company 195 Broadway, New York, N, Y. uiiiiiiiiuiitiiiiiiiiiiiiiiniiimiii F. B. JewettA. F. DixonD. Levinger R. W. King, Editor EDITORIAL BOARD H. P. Charle
. The Bell System technical journal . e System for Television Transmission —M. E. Strieby 438 Stabilized Feedback Oscillators—G. H, Stevenson .... 458 The Discovery of Electron Waves—C. J. Davisson .... 475 Abstracts of Technical Papers 483 Contributors to this Issue 486 AMERICAN TELEPHONE AND TELEGRAPH COMPANY NEW YORK 50c per Copy $ per Year THE BELL SYSTEM TECHNICAL JOURNAL Published quarterly by the American Telephone and Telegraph Company 195 Broadway, New York, N, Y. uiiiiiiiiuiitiiiiiiiiiiiiiiniiimiii F. B. JewettA. F. DixonD. Levinger R. W. King, Editor EDITORIAL BOARD H. P. Charlesworth O. E. Buckley M. J. KeUy W. Wilson W. H. Harrison O. B. Blackwell H. S. Osborne J. O. Perrine, Associate Editor iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiriiin SUBSCRIPTIONS Subscriptions are accepted at $ per year. Single copies are fifty cents foreign postage is 35 cents per year or 9 cents per copy. iiiiiiiiiiiiiiiiiiiiiiiiiitiiiiiitiiiiii Copyright, 1938American Telephone and Telegraph Company PRINTED IN U. 8. HEINRICH RUDOLPH HERTZ 1857-1894 The Bell System Technical Journal Vol. XVII July, 1938 No. 3 Hertz, the Discoverer of Electric Waves * By JULIAN BLANCHARD FIFTY years have passed since those memorable researches of theyoung German physicist, Heinrich Rudolph Hertz, which havecome to be regarded as the starting point of radio. For it was he whofirst detected, and measured, electromagnetic waves in space—waveswhich had been predicted, it is true, but which had never before beenobserved. It is not to be claimed, of course, that the radio art wouldhave failed to be born were it not for his genius, for we know that almostsimultaneously the experiments of Lodge in England were pointing withcertainty to the same discoveries, and the speculations of others wererevolving around the possibility of generating electric waves. Yet itwas the remarkably clear vision of Hertz, combined with his consum-mate persistence and skill, that won for him the prize and
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
