﻿Z. 
  DeForest 
  — 
  Reflection 
  of 
  Hertzian 
  Waves. 
  

  

  67 
  

  

  original 
  parallel 
  wires 
  ; 
  passing 
  through 
  a 
  maximum 
  when 
  the 
  

  

  A 
  

   Y 
  

  

  circular 
  form 
  (b) 
  is 
  taken. 
  

  

  In 
  this 
  case 
  the 
  area 
  also 
  is 
  a 
  maxi- 
  

   mum. 
  

  

  The 
  same 
  phenomenon 
  was 
  observed 
  

   for 
  bare 
  ends 
  as 
  for 
  the 
  two 
  balls, 
  

   though 
  again 
  less 
  pronounced 
  : 
  for 
  a 
  

  

  longer 
  section 
  of 
  the 
  wires 
  thus 
  bent 
  the 
  effect 
  is 
  still 
  more 
  

   marked. 
  

  

  In 
  ^g. 
  tt 
  is 
  shown 
  this 
  relation 
  between 
  the 
  form 
  of 
  the 
  ends 
  

   and 
  the 
  change 
  in 
  capacity 
  and 
  phase. 
  

  

  4 
  6 
  8 
  lU 
  

  

  Maximum 
  distance 
  apart 
  of 
  Wires. 
  

  

  Xow 
  when 
  such 
  convex 
  bends 
  are 
  put 
  into 
  the 
  parallel 
  wires 
  

   distant' 
  from 
  their 
  ends, 
  the 
  effect 
  is 
  the 
  reverse. 
  Yon 
  Geitel* 
  

   found 
  that 
  they 
  produced 
  a 
  decrease 
  in 
  the 
  capacity 
  of 
  the 
  

   wires 
  at 
  the 
  point, 
  (^as 
  is 
  to 
  be 
  expected 
  from 
  the 
  expressions 
  

   for 
  the 
  capacity), 
  causing 
  a 
  reflection 
  of 
  the 
  same 
  sign 
  as 
  would 
  

   a 
  change 
  in 
  wires 
  from 
  thick 
  to 
  thin. 
  By 
  bending 
  the 
  wires 
  

   in 
  he 
  obtained 
  the 
  opposite 
  reflection. 
  So 
  here 
  it 
  is 
  evidently 
  

   connected 
  with 
  the 
  terminals. 
  The 
  change 
  of 
  phase 
  is 
  maximum 
  

   when 
  the 
  ends 
  are 
  close 
  together 
  and 
  still 
  as 
  far 
  removed 
  as 
  

   possible 
  from 
  the 
  influence 
  of 
  the 
  leading-in 
  wires. 
  

  

  Wied. 
  Ann. 
  

  

  p. 
  184. 
  

  

  