the Transmitting Antenna in Wireless Telegraphy. 129 
In the curve obtained with the antenna of 1000 ems. 
connected to earth (see fig. 3), there is a deep minimum at 
Fig. 3. 
s 
Bans PT eritity 
BEBSSCASERESBROCEES= | 
i] a 
prt me SPFRSEOREEE 
S5SSSu5S5EEE5E5 ae —— 
BESSEESEEER Seeenge SEG 
SEG GgeEEEGGREESECGEGSESSGRRESGRSGREGSRUSEEuEEEEE — === 
SESEEREERES Pritt 

approximately 123 cms. from the free end, and a second one 
at 375 ems. This would give 
rA/2= 2x123=246 cms. 
= 375 —123=252 yf 
Mean 249 ,, 
In the curve obtained with no earth or other connexion 
the natural oscillation of the wire as a whole is practically 
absent, but there are minima at distances 
130, 425, 725 (1000 ?) cms. 
Phil. Mag. 8. 6. Vol. 7. No. 38. Feb. 1904. K 
