Bown ralph (10 Ergebnisse)

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Zustand: Good. No Jacket. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Zustand: Good. No Jacket. Missing dust jacket; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Zustand: Very Good. No Jacket. Former library book; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Zustand: Good. 1st American ed. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Zustand: Good. Revised, Subsequent. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.…

Zustand: Good. Revised, Subsequent. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

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). …