1905.] 



Recent Advances in Wireless Telegraphij . 



31 



WEEKLY EVENING MEETINO. 

 Friday, March 3, 1905. 



His Grace the Duke of Northumberland, K.G. D.C.L. F.R.S., 



President, in the Chair. 



Chevalier G. Marconi, LL.D. D.Sc. M.R.I. 



Recent Advances in Wireless Telegraphy . 



[abstract.] 



The phenomena of electro-magnetic induction, revealed chiefly by 

 the memorable researches and discoveries of Faraday carried out 

 in the Royal Institution, have long since shown how it is possible for 

 the transmission of electrical energy to take place across a small 

 air-space between a conductor traversed by a variable current and 

 another conductor placed near it ; and how such transmission may 



L^J 



Fig. 1. 



Fig. 2. 



be detected and observed at distances ^greater or less, according to 

 the more or less rapid variation of the current in one of the wires, 

 and also according to the greater or less quantity of electricity brought 

 into play. 



Maxwell, inspired by Faraday's work, gave to the world in 1873 

 his wonderful mathematical theory of electricity and magnetism, 



