﻿388 
  Mr. 
  H. 
  P. 
  Walmsley 
  on 
  the 
  Distribution 
  of 
  the 
  

  

  It 
  has 
  been 
  shown 
  that 
  the 
  anode 
  activity 
  is 
  due 
  to 
  

   uncharged 
  atoms, 
  deposited 
  there 
  by 
  diffusion 
  and 
  the 
  minor 
  

   effects 
  of 
  the 
  air 
  current. 
  I£ 
  the 
  potentials 
  are 
  not 
  small, 
  

   the 
  effects 
  of 
  the 
  latter 
  will 
  be 
  negligible. 
  In 
  these 
  circum- 
  

   stances 
  the 
  percentage 
  of 
  uncharged 
  atoms 
  is 
  given 
  very 
  

  

  nearly 
  by 
  a 
  "° 
  d 
  ° 
  activit 
  f 
  x 
  100. 
  

   J 
  J 
  cathode 
  activity 
  

  

  Fig. 
  5. 
  

  

  2-0 
  

  

  1-5 
  

  

  f 
  

  

  0-5 
  

  

  

  2 
  3 
  4 
  5 
  6 
  

  

  Mean 
  time 
  in 
  thousanths 
  of 
  a 
  second. 
  

  

  The 
  curve 
  (fig. 
  5) 
  shows 
  the 
  relation 
  between 
  the 
  mean 
  

   time 
  of 
  passage 
  in 
  the 
  electric 
  field 
  and 
  the 
  percentage 
  of 
  

   uncharged 
  atoms. 
  Since 
  it 
  passes 
  through 
  the 
  origin, 
  it 
  

  

  Table 
  I. 
  

  

  Distribution 
  of 
  Active 
  Deposit 
  in 
  Electric 
  Fields. 
  

   Constants: 
  a 
  = 
  0*070 
  cm., 
  &=0'675 
  cm., 
  * 
  = 
  1'54 
  cm. 
  2 
  /sec./volt. 
  

  

  Volts. 
  

  

  Anode 
  

  

  activity 
  

  

  divs. 
  per 
  min. 
  

  

  Cathode 
  

  

  activity 
  

  

  divs. 
  per 
  min. 
  

  

  Per 
  cent. 
  

  

  uncharged 
  

  

  deposit. 
  

  

  Per 
  cent, 
  

   deposit 
  

   charged 
  

  

  positively. 
  

  

  Mean 
  time 
  

  

  taken 
  for 
  

  

  deposit 
  to 
  

  

  reach 
  

  

  electrodes. 
  

  

  Per 
  cent. 
  

  

  Act 
  A 
  

   reaching 
  

  

  wire. 
  

  

  

  

  

  

  

  sees. 
  

  

  

  

  

  166 
  

  

  166 
  

  

  

  

  

  

  1-7 
  

  

  124 
  

  

  298 
  

  

  41-6 
  

  

  58-4 
  

  

  

  ... 
  

  

  9-2 
  

  

  79 
  

  

  565 
  

  

  140 
  

  

  86-0 
  

  

  

  

  20 
  

  

  37 
  

  

  816 
  

  

  4-5 
  

  

  95-5 
  

  

  •0084 
  

  

  17 
  

  

  30 
  

  

  238 
  

  

  985 
  

  

  2-4 
  

  

  976 
  

  

  •0056 
  

  

  25 
  

  

  40 
  

  

  12-8 
  

  

  1004 
  

  

  1-27 
  

  

  98-73 
  

  

  •0042 
  

  

  33 
  

  

  56 
  

  

  9-8 
  

  

  1007 
  

  

  0-97 
  

  

  99-03 
  

  

  •0030 
  

  

  42 
  

  

  72 
  

  

  8-3 
  

  

  1010 
  

  

  0-82 
  

  

  99-18 
  

  

  •0023 
  

  

  50 
  

  

  80 
  

  

  6-7 
  

  

  

  0-66 
  

  

  99-34 
  

  

  •0021 
  

  

  53 
  

  

  120 
  

  

  4-6 
  

  

  1000 
  

  

  0-46 
  

  

  9954 
  

  

  •0014 
  

  

  64 
  

  

  160 
  

  

  34 
  

  

  1027 
  

  

  34 
  

  

  99-66 
  

  

  •0010 
  

  

  71 
  

  

  336 
  

  

  2-7 
  

  

  

  027 
  

  

  99-73 
  

  

  •0005 
  

  

  85 
  

  

  490 
  

  

  22 
  

  

  

  022 
  

  

  99-78 
  

  

  •00034 
  

  

  90 
  

  

  640 
  

  

  1-8 
  

  

  1030 
  

  

  0-18 
  

  

  99-82 
  

  

  •00026 
  

  

  92 
  

  

  