﻿206 
  

  

  Mr. 
  J. 
  Patterson 
  on 
  a 
  

   Table 
  III. 
  

  

  Needle 
  

  

  

  Quadrants 
  charged 
  to 
  

  

  

  

  One 
  pair 
  

  

  198-4 
  yolts 
  

  

  7-9 
  V. 
  

  

  11-95 
  V. 
  

  

  [ 
  15-95 
  V. 
  

  

  39-7 
  V. 
  

  

  on 
  

  

  charged 
  

   to 
  

  

  

  

  

  

  

  quadrants 
  

   earthed, 
  

  

  other 
  

   charged 
  

  

  

  Defl. 
  

   in 
  

  

  Volts 
  

   per 
  

   mm. 
  

  

  Defl. 
  

   in 
  

  

  Volts 
  

   per 
  

   mm. 
  

  

  Defl. 
  

   in 
  

  

  Volts 
  

   per 
  

   mm. 
  

  

  Defl. 
  

   in 
  

  

  Volts 
  

   per 
  

   mm. 
  

  

  Defl. 
  

   in 
  

  

  Volts 
  

   per 
  

  

  

  mm. 
  

  

  defl. 
  

  

  mm. 
  

  

  defl. 
  

  

  mm. 
  

  

  defl. 
  

  

  mm. 
  

  

  defl. 
  

  

  to 
  

  

  mm. 
  

  

  defl. 
  

  

  20-0 
  V. 
  

  

  

  

  

  

  

  

  5-5 
  

  

  3-6 
  

  

  20 
  V. 
  

  

  3-2 
  

  

  0-63 
  

  

  40-0 
  

  

  2-25 
  

  

  17-8 
  

  

  3-65 
  

  

  lib 
  

  

  4-5 
  

  

  90 
  

  

  10-8 
  

  

  3-7 
  

  

  39 
  

  

  64 
  

  

  0-61 
  

  

  59-9 
  

  

  

  

  

  

  

  

  16-2 
  

  

  3-7 
  

  

  5-9 
  

  

  8-5 
  

  

  0-69 
  

  

  79-6 
  

  

  4-5 
  

  

  17-5 
  

  

  6-8 
  

  

  11-7 
  

  

  8-8 
  

  

  9-0 
  

  

  22-2 
  

  

  3-6 
  

  

  9-95 
  

  

  13-7 
  

  

  0-65 
  

  

  1192 
  

  

  6-4 
  

  

  18-6 
  

  

  10-4 
  

  

  11-4 
  

  

  13-4 
  

  

  8-9 
  

  

  

  

  140 
  

  

  20-7 
  

  

  067 
  

  

  158-8 
  

  

  9-2 
  

  

  17-3 
  

  

  14-2 
  

  

  11-2 
  

  

  18-2 
  

  

  8-7 
  

  

  ... 
  

  

  ... 
  

  

  19-8 
  

  

  28-2 
  

  

  070 
  

  

  238-5 
  

  

  14-2 
  

  

  16-7 
  

  

  22-4 
  

  

  10-7 
  

  

  

  

  

  

  

  

  

  Mean 
  

  

  17-6 
  

  

  11 
  2 
  

  

  8-9 
  

  

  3-65 
  

  

  

  One 
  

  

  A= 
  139-0 
  

  

  133-8 
  

  

  141-9 
  

  

  J 
  44-9 
  

  

  

  

  131-0 
  

  

  A 
  = 
  Potential 
  difference 
  

  

  of 
  quadrants 
  X 
  volts 
  per 
  mm. 
  deflexion. 
  

   Fig. 
  3. 
  

  

  

  

  

  

  

  1 
  \ 
  

  

  

  / 
  

  

  \ 
  1 
  

  

  

  d. 
  ■% 
  

  

  

  

  

  

  fa 
  

  

  

  / 
  

  

  

  ^ 
  

  

  

  

  

  

  

  1 
  

  

  

  / 
  

  

  y 
  

  

  ~3 
  

  

  

  

  

  

  

  

  / 
  

  

  

  / 
  

  

  / 
  

  

  

  

  i 
  

  

  

  

  

  

  f 
  

  

  / 
  

  

  / 
  

  

  / 
  

  

  \ 
  1 
  ' 
  

  

  160 
  

  

  

  

  

  J 
  

  

  / 
  

  

  / 
  

  

  

  

  

  i 
  

   i 
  

  

  

  r-3J 
  

  

  

  

  / 
  

  

  

  

  

  

  

  i 
  

  

  \ 
  

  

  

  o 
  

  

  

  A 
  

  

  i 
  / 
  

  

  

  

  

  

  

  a 
  

  

  

  I 
  

  

  

  A 
  

  

  

  

  

  

  / 
  

  

  f 
  

  

  

  80 
  

  

  

  // 
  

  

  / 
  

  

  

  

  / 
  

  

  S' 
  

  

  

  

  t 
  

  

  

  / 
  

  

  / 
  

  

  

  y 
  

  

  X 
  

  

  

  

  

  

  t 
  

   i 
  

  

  

  / 
  

  

  / 
  

  

  

  

  

  

  

  

  

  

  

  Ia 
  

  

  /' 
  

  

  

  

  

  

  

  

  

  

  10 
  20 
  3 
  

  

  Deflection 
  in 
  mm. 
  

  

  