Vol.. 6, 1920 
PHYSICS: A. G. WEBSTER 
317 
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the space to be explored. To be sure, the pressure measured by the pho- 
nometer is not the same as that of the antenna, but inasmuch as standing 
waves are formed in the antenna the pressure measured by the phonometer 
is proportional to that at the end of the antenna and, therefore, to that 
in the place to be observed. 
The figures printed herewith show on the dotted lines the actual observa- 
tions and on the full lines the theory. The shape and dimensions of the 
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