Wireless Telegraphy and Telephony Simply Explained: A Practical Treatise Embracing Complete and Detailed Explanations of the Theory and Practice of Modern Radio Apparatus and Its Present Day Applications, Together with a Chapter on the Possibilities of Its Future DevelopmentNorman W. Henley Publishing Company, 1912 - 154 стор. |
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Сторінка 22
... gives the best " all around ” re- sults . The vertical and umbrella forms are close seconds . W S W FIG . 21. - Umbrella aerial . For the very best results , the top or horizontal portion of a “ T ” aerial should be slightly shorter ...
... gives the best " all around ” re- sults . The vertical and umbrella forms are close seconds . W S W FIG . 21. - Umbrella aerial . For the very best results , the top or horizontal portion of a “ T ” aerial should be slightly shorter ...
Сторінка 24
... give the best results . Bare copper wire is the best , and is generally used for aerials . Wherever the stretch is 100 feet or over , however , so that the wires are subjected to considerable strain from their own weight , phosphor ...
... give the best results . Bare copper wire is the best , and is generally used for aerials . Wherever the stretch is 100 feet or over , however , so that the wires are subjected to considerable strain from their own weight , phosphor ...
Сторінка 71
... give it an impulse and cause it to swing slightly . If the chain is short , the ball will swing faster , while if it is long it will swing more slowly . We will suppose that the SHOT B FIG . 86. - Chain and ball arranged to illustrate ...
... give it an impulse and cause it to swing slightly . If the chain is short , the ball will swing faster , while if it is long it will swing more slowly . We will suppose that the SHOT B FIG . 86. - Chain and ball arranged to illustrate ...
Сторінка 102
... gives the " finish " signal . M. S. G. is the abbreviation for message . The N. Y. operator then throws his switch back into the receiving position and waits for a reply . If one is not forthcoming shortly the calling process is ...
... gives the " finish " signal . M. S. G. is the abbreviation for message . The N. Y. operator then throws his switch back into the receiving position and waits for a reply . If one is not forthcoming shortly the calling process is ...
Сторінка 109
... gives a pictorial representation of the crowding together of the air particles during the passage of a wave . The loudness of the sound depends upon the amount and sud- denness of the change in pressure , and the note or pitch on the ...
... gives a pictorial representation of the crowding together of the air particles during the passage of a wave . The loudness of the sound depends upon the amount and sud- denness of the change in pressure , and the note or pitch on the ...
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50 cents A. A. HOUGHTON adjustable alternating current amateur appliances arranged battery BINDING POST boilers chapters CHART circuit coal coil of wire COMPOUND LOCOMOTIVES connected consists construction contains coupled helix detail detector devices diagram diaphragm direct current discharge drawings dynamos Edition electric waves electrodes engravings equipment ether explained flow fully illustrated gas engine Gasoline heating high frequency oscillations included induction coil instruments insulated Lathes Leyden jar Locomotive machine magnetic field manufacture mechanical messages metal methods modern molds motion motor O'CONOR SLOANE operation pass pipes plumbing potentiometer practical treatise Price primary produced pumps radiate railroad receiving apparatus Rubber secondary selenium showing signals slide SLIDER sound waves spark gap speech steam engine steel telephone receiver telephone transmitter tion transmitting tuning coil turbines types Valve Gear variable condenser vibrations Walschaert Valve Gear wireless station wireless telegraphy wireless telephone