﻿Properties 
  of 
  Newly 
  Prepared 
  Gases. 
  137 
  

  

  It 
  will 
  be 
  seen 
  that 
  these 
  numbers 
  are 
  nearly 
  exactly 
  the 
  

  

  same 
  as 
  those 
  given 
  by 
  the 
  formula 
  n= 
  - 
  — 
  ^- 
  if 
  we 
  put 
  

  

  rc 
  = 
  32 
  and 
  # 
  = 
  *0043 
  in 
  the 
  case 
  of 
  hydrogen, 
  and 
  n 
  = 
  49 
  

   and 
  #= 
  , 
  00255 
  in 
  the 
  case 
  of 
  oxygen. 
  The 
  numbers 
  calcu- 
  

   lated 
  from 
  this 
  formula 
  are 
  given 
  in 
  the 
  two 
  following- 
  

   tables 
  : 
  — 
  

  

  Table 
  VI. 
  Table 
  VII. 
  

  

  n. 
  

  

  t. 
  

  

  

  n. 
  

  

  t. 
  

  

  32 
  

  

  

  

  

  49 
  

  

  

  

  25-4 
  

  

  1 
  

  

  

  375 
  

  

  2 
  

  

  211 
  

  

  2 
  

  

  

  30-3 
  

  

  4 
  

  

  18 
  

  

  3 
  

  

  

  25-5 
  

  

  6 
  

  

  15-7 
  

   14 
  

  

  4 
  

   5 
  

  

  

  22 
  

  

  8 
  

  

  

  

  

  this 
  shows 
  that 
  p 
  = 
  T~Wt 
  ' 
  Hence 
  we 
  have 
  from 
  equation 
  (2) 
  

  

  (P- 
  134)0=^. 
  

  

  13. 
  The 
  velocity 
  of 
  the 
  charged 
  carrier 
  when 
  acted 
  on 
  by 
  

   an 
  electric 
  force 
  can 
  be 
  found 
  from 
  the 
  above 
  numbers. 
  

   The 
  electrometer 
  having 
  been 
  standardized 
  it 
  was 
  found 
  that 
  

   •0037 
  electrostatic 
  unit 
  of 
  quantity 
  would 
  give 
  a 
  deflexion 
  

   of 
  one 
  division 
  on 
  the 
  scale, 
  so 
  that 
  we 
  get 
  

  

  32 
  x 
  -0037 
  

   p0 
  ~7rx-8 
  2 
  x30-2 
  

  

  in 
  the 
  hydrogen 
  experiments, 
  and 
  

  

  49 
  x 
  -0037 
  

   ^ 
  ~7rx-8 
  2 
  x30-2 
  

  

  = 
  2.10" 
  3 
  

  

  = 
  3.10" 
  3 
  

  

  in 
  the 
  oxygen 
  experiments. 
  Let 
  k 
  n 
  and 
  e 
  u 
  denote 
  the 
  values 
  

   of 
  k 
  and 
  e 
  for 
  hydrogen, 
  and 
  k 
  and 
  e 
  similar 
  values 
  for 
  

   oxygen, 
  and 
  we 
  get 
  

  

  4ttp 
  £ 
  

  

  = 
  •0043, 
  where 
  Po 
  = 
  2 
  . 
  10~ 
  3 
  , 
  

  

  