34 



Chevalier G. Marconi 



[March 3, 



difficulty in the way of obtaining syntonic effects was caused by the 

 action of the transmitting wire. This straight rod or wire in which 

 electrical oscillations are set up, forms, as is well known, a very good 

 radiator or emitter of electric waves ; but, at the same time, in all 

 such good radiators, electrical oscillations set up by the ordinary 

 spark-discharge method cease, or are damped out very quickly by the 

 electrical radiation, which removes very rapidly the small amount of 

 their stored up energy. 



It is well known that if two tuning forks are taken, having the 

 same periods of vibration or note, and one of them is set in motion 

 by striking it sharply, waves or sounds will form in the air ; and the 

 other tuning-fork, if in suitable proximity, will immediately com- 

 mence to vibrate, or sound in unison with the first. 



h2.2r^ 



"^JOTW ^ 



777777. 



Fig. 6. 



Fig. 7. 



Of course, tuning-forks have to do with air waves, and wireless 

 telegraphy with ether waves, but the action in both cases is analogous. 



There is one essential condition which must be fulfilled in order 

 that a well-marked tuning or electrical resonance may take place, 

 and it is based on the fact that what we call electrical resonance, 

 like mechanical resonance, depends essentially upon the accumulated 

 effect of a large number of feeble impulses properly timed. Tuning- 

 can only be achieved if a sufficient number of these timed electrical 

 impulses reach the receiver. 



Over four years ago, the author obtained satisfactory results by 

 increasing the electrical capacity of the radiating and resonating 

 conductors by arranging them at each station in the form of two 



