Resultados da Pesquisa: television today and tomorrow por de forest lee

The Dial Press. Very Good with no dustjacket. 1942. First Edition. Hardcover. Bit of writing on front endpaper, else clean. Light wear. ; Illustrated with drawings. History, economic status, projection tubes, cathode beam systems and synchronization, use of film in television, transmission through space, television for amateurs, studio technique, the Dumont system, much more. ; 8vo; 361 pages .

Hutchinson's Scientic and Technical Publications, London, 1945,. Very Good/Dust Jacket Included. 1945. Hardcover. hardback, 8vo, 176pp, pages browning, otherwise clean and sound, no inscriptions, brown cloth gilt, Very Good condition in frayed and rubbed dustwrapper .

NY: DIAL.. Near Fine in Very Good dust jacket. 1942. First Edition; First Printing. Hardcover. INSCRIBED & dated in year of publication by Lee De Forest, inventor of radio as we know it, to his secretary on the front end paper. CLose to near fine copy in a priceclipped, otherwise very good dust jacket. (Traces of light shelf soiling to edges. Edge tears & touches of shelf soiling & wear to covers of jacket. ) .

New York: Dial Press, 1942/ First edition, presentation copy. Original beige cloth stamped in black. . Octavo. With over a hundred diagrams, drawings, and charts (six full-page). Slight rubbing. Some toning to endpapers, otherwise clean throughout. Inscribed by Lee de Forest to Dr. A.J. Lieberman (February 6, 1957). In the original dust jacket, printed in blue (some chipping to extremities and some toning). A very good, bright copy of this work by the inventor of the foundational technology for the field of electronics. Lee de Forest (1873 – 1961) was an inventor who pioneered broadcasting technology. His dissertation at Yale, "Reflections of Electric Waves of Very High Frequencies at the Ends of Parallel Wires," may have been the earliest American dissertation based on Hertzian waves — an experimental form of what became known as wireless. "De Forest's most important invention came in 1906, when he developed his "Audion," a three-element (triode) vacuum tube detector, on which later development… Ler mais