wireless von risdon (4 Ergebnisse)

Cloth. Zustand: Fair. Zustand des Schutzumschlags: Good. Including many explanatory line illustrations and a comprehensive index. 92 pages. Not dated [?1930's) . One of Foulsham's Popular Wireless Books. Green cloth, black titles. Early edition (Price 1/- One Shilling). Covers detached at back hinge; nevertheless a fair copy in good dust-jacket. What is a cathode; what is an electrode; what are atmospherics; what is jamming; what is megohm; what is the purpose of the filament; what is the object of the anode?.The answers to these and hundreds of similar questions.

Hard back binding in publisher's original olive cloth covers, black title and author lettering to the spine and to the front cover. 8vo. 8½'' x 6¼''. Contains 384 printed pages of text with monochrome illustrations and photographs throughout. Fraying of the cloth to the spine ends and gutters, corners rubbed, names, addresses and messages to the front free end paper and in Poor condition, no dust wrapper. Member of the P.B.F.A. RADIO [Wireless Telephony].

Risdon, Philip James (1879-). Wireless. Introduction by J. A. Fleming, ., with many diagrams and illustrations. London and Melbourne: Ward, Lock & co., Ltd., [1924]. 384pp., frontispiece. Monochrome illustrations and photographs throughout. 205 x 150 mm. Publisher's original olive-green cloth covers, black title and author lettering to the spine and to the front cover. Spine ends and lower corners creased, shallow rubs to the spine tips, foxing to the page edges; Inscription to front free end paper, dated 1925. Very good. Second edition. 51054.

Ward, Lock & Co., London, 1924. 384 S. mit zahlr. Diagrammen und Ill., Ln. - Introduction by J. A. Fleming, M.A., D.Sc., F.R.S., University Professor of Electrical Engineering in the University of London; seltenes frühes Werk ---- 750 Gramm.