130 



Mr. Gr. V. MacLean on the 

 Table (continued). 



Distance in 



cms. from the 



reflector. 



First 



maximum 



reading. 



Increased 



maximum 



reading. 



The increase due to 

 the electric waves. 



7-0650 



8-950 



8-950 



0000 Mean 00000. 





8-800 



8-800 



0000 





8-650 



8-660 



0000 





8-600 



8600 



o-ooo 





8-800 



8-800 



0-000 





7-350 



7350 



0000 





7-450 



7-450 



0-000 





7-600 



7-600 



0000 





7-845 



7-845 



0000 





8-000 



8-000 



0000 



This last experiment shows the wave-length we have 

 measured was that of the fundamental wave. And, moreover, 

 that by the use of this particular coherer or the electro- 

 bolometer, the balancing of the self-inductions and capacities, 

 and by our method of operating the oscillator, all the electric 

 waves in the infinity of different waves proceeding from the 

 Ruhmkoff coil, except the fundamental, had been completely 

 damped. If such had not been the case, it is very evident 

 the measurements so taken would not have been identical 

 with those first observed. 



The experiment was pushed further. The new self- 

 induction (graphite) of the coherer circuit being retained, 

 the capacity of the oscillator circuit was made double of what 

 it was in the original case, and therefore double of that now 

 in the coherer circuit. At those points where the original 

 readings indicated nodes and antinodes the readings were 



The new self-induction in the coherer 

 circuit and the original capacity in the 

 oscillator circuit. 



The new self-induction in 

 tbecoheier circuit and the 

 capacity in the oscillator 

 circuit doubled. 



Distance in m. of 



the coherer from 



the reflector. 



Difference between 



the maximum and 



increased maximum 



readings of the 



M.A.M. 



Difference between the 

 maximum and the increased 

 maximum readings of the 

 M.A.M. 



1-1500 

 2-6288 

 4-1075 

 5-5863 

 70650 



0-000 

 0-260 



o-ooo 



0-262 



00000 



Average of 5 readings. 



0075 

 0276 

 0-150 

 0-250 

 0081 

 Average of 5 readings. ; 



