﻿Directive 
  System 
  of 
  Wireless 
  Telegraphy. 
  

  

  647 
  

  

  and 
  (/> 
  = 
  0, 
  and 
  finally 
  fig. 
  5 
  the 
  same 
  diagram 
  for 
  M 
  = 
  C 
  and 
  

   <6 
  = 
  90°. 
  

  

  0-69 
  

  

  0-5E 
  

  

  0-37 
  

  

  0-25 
  

  

  In 
  consequence, 
  one 
  can 
  conclude 
  that 
  the 
  shape 
  of 
  the 
  dia- 
  

   gram 
  of 
  the 
  energy 
  radiated 
  in 
  the 
  different 
  directions 
  depends 
  

   upon 
  the 
  value 
  of 
  the 
  phase-difference 
  of 
  the 
  component 
  electro- 
  

   magnetic 
  fields, 
  and 
  that 
  the 
  superposition 
  of 
  a 
  circular 
  system 
  

   on 
  a 
  directive 
  system 
  allows 
  of 
  the 
  concentration 
  of 
  the 
  emitted 
  

   energy 
  in 
  the 
  desired 
  direction 
  and 
  in 
  the 
  useful 
  sense 
  only. 
  

  

  