Hartman jb (5 Ergebnisse)

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,650grams, ISBN.…

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN.

Hardcover. Zustand: Good. No Jacket. 1st Edition. 83 pages (complete). A tidy, smart book. The illustrated laminated cover has only light shelving wear. It is assured and healthy. Inside, the contents are neat, tidy and tight. The pages are clean, clear, certain and competent. fk. Our orders are shipped using tracked courier delivery services.…

New York, American Telephone and Telegraph Company, 1946. 8vo. Volume XXV, Number 2, April 1946 of "The Bell System Technical Journal". Entire volume offered. In the original printed blue wrappers. With previous owner's name to front wrapper. Sunning to spine and margins of front wrapper. Back wrapper loose. An overall nice and clean copy. Pp. (4), 167-349. First printing of Bell Labs Magnetron issue. The Magnetron is a high-powered vacuum tube that through a stream of electrons in a magnetic field generates microwaves. This reduced the size of radar sets which made it possible to install them in anti-submarine aircrafts and escort ships. This had a profound influence on the warfare during WWII. Today magnetrons are commonly used in microwave ovens and in various radar applications."The studies of Fisk, H. D. Hagstrum, and P. L. Hartman [the present paper] increased the understanding of the role that the various possible modes of oscillation played in magnetron operation and the effect of the wire straps - which later evolved into two pair of concentric copper rings." (Millman, S. A History of Engineering & Science in the Bell System, 1984, p. 173).…

New York, American Telephone and Telegraph Company, 1946. 8vo. In the original printed blue wrappers. In "The Bell System Technical Journal", Volume XXV, Number 2, April 1946. Light miscolouring to spine and previous owner's name to front wrapper. Other wise a fine and clean copy. Pp. (4), 167-349. First printing of Bell Labs Magnetron issue. The Magnetron is a high-powered vacuum tube that through a stream of electrons in a magnetic field generates microwaves. This reduced the size of radar sets which made it possible to install them in anti-submarine aircrafts and escort ships. This had a profound influence on the warfare during WWII. Today magnetrons are commonly used in microwave ovens and in various radar applications."The studies of Fisk, H. D. Hagstrum, and P. L. Hartman [the present paper] increased the understanding of the role that the various possible modes of oscillation played in magnetron operation and the effect of the wire straps - which later evolved into two pair of concentric copper rings." (Millman, S. A History of Engineering & Science in the Bell System, 1984, p. 173). …