242 



Intelligence and Miscellaneous Articles. 



Distance of the resona- 1 

 tor from the con- 

 ducting wire. 



First node 

 Second ,, 

 Third „ 

 Fourth ., 

 First loop 

 Second „ 

 Third „ 



cm. 



cm. 



cm. 



cm. 



cm. 



cm. 



cm. 



2. 



10. 



20. 



30. 



40. 



50. 



60. 



16-0 



15-4 



9-5 



7-7 



1-8 



-9-8 





56-4 



56-3 



54-2 



515 



47-3 



44-8 



37-7 



96-5 



95-7 



95-2 



93-5 



905 



88-9 



87-5 



135-0 



135-8 



135-1 



134-6 



1308 



129-7 



130-5 



404 



409 



44-7 



43-8 



45-5 



54-6 





401 



39-4 



41-0 



420 



43-2 



44-1 



49-8 



38-5 



401 



39-9 



41-1 



403 



40-8 



430 



In fig. 1 we have represented by small dots the position of the 

 centre of the resonator of 10 centiin. in the 27 nodes given 

 numerically above. The small circles on the same figure give the 

 positions of the nodes due to a circle 25 centim. in diameter in 

 four different distances from the conducting tube. 



The impression which directly results from the distribution of 

 all these nodes is that, if the first shock arrives at the resonator 

 almost parallel to the conducting wire, the second must arrive 

 there by a direct radiation proceeding from the neighbourhood of 

 the end of the wire. In fact all the nodes are situated virtually 

 as if the energy producing the second shock in the resonator 

 travelled quite close to the wire until it arrived at the end, and thence 

 moved directly on the circle. It must, however, be observed that 

 this mode of viewing the reflexion does not justify the considerable 

 recession of the first node when the resonator is close to the 



Fig. 1. 



\ 



\ 



conducting wire; a recession which, according to the experiments 

 of Sarasin and De la Rive, is greater as the circle itself is greater. 

 "We believe, however, we have now well established that this 

 recession is due to the geometrical form of the resonator ; the 

 electrical shocks, arriving along two rectilinear conductors, tend 



