espenschied lloyd (8 Ergebnisse)

Zustand: New.

Zustand: New.

Zustand: VG. July 1930. volume IX, no. 3. First edition. Bell System Technical Journal. Wilson article on pp. 407-428 in single complete issue of The Bell System Technical Journal. Numerous photo illustrations. original printed bluegreen wraps. octavo. Complete issue paginated pp. 407-602. Many other interesting articles. VG no ownership marks.

Taschenbuch. Zustand: Neu. Neuware - This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.

Taschenbuch. Zustand: Neu. Neuware - This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.

Hardcover. Zustand: Fine. Zustand des Schutzumschlags: Near Fine. 1st Edition. Xiii, 274 Pp. Black Cloth.First Printing, 1962 Date On Title Page. Fine In Very Near Fine Dj With Touch Of Rubbing At Upper Corners.

Buch. Zustand: Neu. Neuware - This book delves into the genealogy and historical background of the Espenschied-Esbenshade families, tracing their roots to Germany. Lloyd Espenschied provides a detailed account of the family's history, including immigration to the United States, and highlights notable family members and achievements.

Wraps. Zustand: Good. First Edition. First Edition. VI, 1097-1240, VII-XXIV pages. Entire issue offered. 8vo. Original tan printed wrappers, stapled. Staining to original wrappers near spine panel front and back. Page edges soiled. Nice illustration in advertisement for General Radio on rear. Wraps. Rare in the original wrappers. Contains articles by Espenshied, Bown, Norton, and others relevant to early radio and it's development. Articles include "The Origins and Development of Radiotelephony" by Espenshied (Sterlin and Shiers 9-103: "A unified account devoted primarily to American contributions from 1912 on. Photos, bibliography."), "Transoceanic Radiotelephone Development" by Ralph Bown, and "The Propagation of Radio Waves over the Surface of the Earth and in the Upper Atmosphere" by K. A. Norton. Ralph Bown was well known for his introduction of the transistor at the first press conference at Bell Labs. His article discusses how far transoceanic radio use has come: "Ten years have elapsed since the opening to public use on January 7, 1927, of the first long distance radio telephone circuit. This form of intercontinental communication has now come into practical business and social use. A network of radio circuits interconnects nearly all the land wire telephone systems of the world. The art has passed through the pioneering stage and is well into a period of growth." The Norton article has over 185 citations as of this writing and covers "Completely general formulas are given for computing at any point above a plane earth of finite conductivity the vector electric field for a source which may be a combination of vertical and horizontal electric dipoles or a loop antenna with its axis parallel or perpendicular to the earth." See Sterling and Shiers, History of Telecommunications Technology, An Annotated Bibliography (2000).