. The Americana : a universal reference library, comprising the arts and sciences, literature, history, biograhy, geography, commerce, etc., of the world . rr;-^. SLABYdARCO PORTABLE WIRELESS TELEGRAPH SYSTEM. Stortjc Battery. • Portibk Induction Coil. ^ Inducunce Coils. * Microphone Receiver ^ Ponr Telephone Receiver. Reels tor Kites. Blue-Hill Box Kite. German Bird Kite. MARCONIS WIRELESS TELEGRAPH AUTOMOBILE FOR MILITARY PURPOSES. TELEGRAPHY, WIRELESS telegraphy is due to Castelli; auto-cohcrers havealso been devised by Marconi, DeForest, Fes-senden and others, and will be described else-wh
. The Americana : a universal reference library, comprising the arts and sciences, literature, history, biograhy, geography, commerce, etc., of the world . rr;-^. SLABYdARCO PORTABLE WIRELESS TELEGRAPH SYSTEM. Stortjc Battery. • Portibk Induction Coil. ^ Inducunce Coils. * Microphone Receiver ^ Ponr Telephone Receiver. Reels tor Kites. Blue-Hill Box Kite. German Bird Kite. MARCONIS WIRELESS TELEGRAPH AUTOMOBILE FOR MILITARY PURPOSES. TELEGRAPHY, WIRELESS telegraphy is due to Castelli; auto-cohcrers havealso been devised by Marconi, DeForest, Fes-senden and others, and will be described else-where herein, llie Castelli auto-coherer isoutlined in Fig. 4. It consists of a glass tube K, inches in lengtli, a carbon rod c, a plug ofiron I within the tube, and a small drop ofmercury m, placed between c and i. The rodc and plug 1 are adustable within the tube bythe screws h, h. A is the vertical wire whichis made a part of the coherer circuit. A tele-phone receiver t and a small battery b areplaced in a shunt circuit around the coherer.
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Keywords: ., bookcentury1900, bookdecade1900, bookidamericanauni, bookyear1903
