﻿512 
  Prof. 
  D. 
  N. 
  Mallik 
  on 
  Magnetic 
  

  

  was 
  photographed 
  and 
  the 
  quantities 
  calculated 
  from 
  

   measurement. 
  

  

  11-5 
  

  

  V. 
  

  

  5E 
  

  

  38-16 
  

  

  §ds. 
  

  

  19-97 
  

  

  17 
  

  

  IE 
  

  

  30-92 
  

  

  19-85 
  

  

  30 
  

  

  5E 
  

   Mean 
  ... 
  

  

  37-12 
  

  

  19-92 
  

  

  

  .. 
  37-1 
  

  

  19-91 
  

  

  21. 
  Therefore, 
  finally, 
  we 
  have 
  

  

  K 
  1 
  K 
  2 
  Y 
  f 
  p 
  = 
  %'28x 
  19-91, 
  

  

  where 
  V 
  is 
  the 
  potential-difference 
  corresponding 
  to 
  S 
  at 
  the 
  

   pressure 
  p, 
  

  

  25. 
  It 
  is 
  not 
  without 
  interest 
  to 
  note 
  that 
  Prof. 
  Wilson 
  

   and 
  Mr. 
  Martyn's 
  result 
  can 
  be 
  written 
  

  

  pY'K^ 
  = 
  23-1 
  x 
  3-1. 
  

  

  26. 
  If 
  we 
  take 
  V 
  equal 
  to 
  the 
  actual 
  potential-difference 
  

   between 
  the 
  electrodes, 
  we 
  have 
  the 
  following 
  values 
  of 
  

   KiK 
  s 
  for 
  different 
  values 
  of 
  p. 
  

  

  p 
  

  

  V 
  

  

  in 
  volts. 
  

  

  S 
  

   in 
  volts 
  per 
  cm. 
  

  

  K 
  X 
  K 
  2 
  . 
  

  

  3 
  

  

  1158 
  

  

  58-2 
  

  

  1-878 
  xlO 
  6 
  

  

  5 
  

  

  2130 
  

  

  107 
  

  

  6-159 
  x 
  10 
  5 
  

  

  10 
  

  

  1560 
  

  

  229 
  

  

  1-438 
  x 
  10 
  5 
  

  

  27. 
  These 
  results 
  may 
  obviously 
  depend 
  on 
  the 
  special 
  

   conditions 
  of 
  the 
  experiments, 
  such 
  as 
  the 
  distance 
  between 
  

   the 
  electrodes 
  besides 
  the 
  E.M.F. 
  used 
  for 
  producing 
  the 
  

   discharge. 
  I 
  proceeded 
  accordingly 
  to 
  investigate 
  the 
  effects 
  

   of 
  these 
  quantities. 
  

  

  28. 
  In 
  order 
  to 
  examine 
  the 
  effect 
  of 
  the 
  distance 
  between 
  

   the 
  electrodes 
  on 
  the 
  discharge, 
  the 
  potential 
  - 
  difference 
  

   between 
  the 
  electrodes 
  for 
  different 
  pressures 
  was 
  determined 
  

   as 
  in 
  art. 
  11, 
  for 
  the 
  case 
  in 
  which 
  the 
  discharge 
  between 
  the 
  

   electrodes 
  was 
  5'8 
  cm. 
  (fig. 
  10). 
  The 
  curve 
  for 
  this 
  case 
  and 
  

   that 
  in 
  which 
  the 
  distance 
  was 
  18 
  cm. 
  are 
  plotted 
  together 
  

   (fig. 
  10) 
  for 
  purposes 
  of 
  comparison. 
  

  

  It 
  will 
  be 
  seen 
  that 
  the 
  first 
  bend 
  in 
  the 
  curve 
  associated 
  

   with 
  a 
  change 
  in 
  the 
  character 
  of 
  the 
  discharge 
  occurs 
  at 
  

  

  