﻿250 
  Mr. 
  G. 
  W. 
  Walker 
  on 
  

  

  The 
  new 
  lines 
  looking 
  at 
  right 
  angles 
  to 
  the 
  field 
  are 
  

   therefore: 
  — 
  

  

  The 
  central 
  line 
  3 
  = 
  3 
  polarized 
  perpendicular 
  to 
  the 
  

  

  direction 
  of 
  the 
  lines 
  of 
  force, 
  

   and 
  the 
  lateral 
  components 
  

  

  *+»,=*o± 
  l 
  eR 
  ^- 
  m 
  ^ 
  v- 
  ; 
  ™'^+<r 
  v 
  ■ 
  . 
  (A) 
  

  

  I 
  m 
  1 
  m 
  2 
  b 
  m 
  l 
  2 
  m 
  2 
  2 
  : 
  

  

  polarized 
  perpendicularly 
  to 
  the 
  central 
  line. 
  

  

  The 
  first, 
  term 
  represents 
  the 
  ordinary 
  Zeeman 
  effect. 
  

   For 
  comparison 
  I 
  rewrite 
  Voigt's 
  formula 
  

  

  S=-£± 
  Vc 
  2 
  R* 
  + 
  f, 
  

   or 
  approximately 
  

  

  B=±cR-S±lg.... 
  

  

  The 
  asymmetry 
  is 
  therefore 
  in 
  the 
  same 
  sense 
  in 
  the 
  two 
  

   theories, 
  viz., 
  the 
  lateral 
  component 
  towards 
  the 
  violet 
  

   having 
  the 
  greater 
  displacement. 
  They 
  differ, 
  however, 
  in 
  

   one 
  important 
  respect. 
  On 
  the 
  present 
  theory 
  the 
  asym- 
  

   metry 
  is 
  greater 
  the 
  greater 
  the 
  strength 
  of 
  the 
  magnetic 
  

   field, 
  whereas 
  on 
  Voigt's 
  theory 
  it 
  is 
  more 
  marked 
  the 
  

   smaller 
  the 
  field. 
  

  

  The 
  term 
  

  

  leH(m 
  2 
  — 
  m^ 
  2 
  

   — 
  z 
  m 
  Y 
  m^ 
  

  

  in 
  this 
  theory 
  is 
  of 
  course 
  the 
  same 
  as 
  + 
  cR 
  in 
  Voigt's 
  

   theory. 
  

  

  Let 
  us 
  next 
  compare 
  the 
  effect 
  in 
  different 
  parts 
  of 
  the 
  

   spectrum. 
  

  

  On 
  Voigt's 
  theory 
  the 
  difference 
  of 
  displacement 
  of 
  the 
  two 
  

   components 
  is 
  

  

  2* 
  or 
  2e 
  1 
  $ 
  , 
  

  

  and 
  the 
  fraction 
  of 
  the 
  separation 
  is 
  

  

  2f 
  ^ 
  e,3 
  

  

  or 
  -i=? 
  : 
  that 
  

  

  IS 
  GC 
  

  

  2cR 
  cR 
  • 
  d 
  x 
  H 
  * 
  

  

  On 
  the 
  present 
  view 
  the 
  difference 
  of 
  displacement 
  is 
  

  

  1 
  e 
  2 
  H 
  {m 
  x 
  + 
  m 
  2 
  ) 
  2 
  3 
  

   4 
  mfmf: 
  °' 
  

  

  