﻿Series 
  Law 
  of 
  Resonance 
  Spectra. 
  

  

  253 
  

  

  reduce 
  all 
  wave-lengths 
  to 
  vacuum, 
  and 
  convert 
  them 
  into 
  

   frequencies. 
  

  

  We 
  will 
  take 
  up 
  first 
  the 
  study 
  of 
  the 
  doublets, 
  the 
  wave- 
  

   lengths 
  of 
  which 
  and 
  their 
  reciprocals 
  are 
  given 
  in 
  the 
  fol- 
  

   lowing 
  table, 
  on 
  the 
  International 
  Scale 
  and 
  reduced 
  to 
  

   vacuum. 
  

  

  Doublets 
  excited 
  by 
  Green 
  Line 
  of 
  Cooper-Hewitt 
  

   Lamp. 
  

  

  Group 
  

   Order. 
  

  

  

  

  0462 
  23 
  Line) 
  

   5463-74 
  

  

  i(Obs.) 
  

  

  183075 
  

   183025 
  

  

  Freq. 
  

   Dif. 
  

  

  50 
  

  

  ^(Cal.) 
  

  

  183075 
  

  

  Difference 
  

  

  between 
  

  

  Obs. 
  & 
  Cal. 
  

  

  

  

  1 
  

  

  5526-55 
  

   5528-10 
  

  

  180945 
  

   180894 
  

  

  51 
  

  

  180942 
  

  

  +3 
  

  

  2 
  

  

  Missing 
  

  

  

  

  

  

  3 
  

  

  5658-71 
  

   5660-38 
  

  

  1767 
  J 
  9 
  

   176667 
  

  

  52 
  

  

  176715 
  

  

  +4 
  

  

  4 
  

  

  5726 
  59 
  

   5728-25 
  

  

  174624 
  

   174573 
  

  

  51 
  

  

  174621 
  

  

  -f-3 
  

  

  5 
  

  

  5795-79 
  

   5797-51 
  

  

  172539 
  

  

  172488 
  

  

  51 
  

  

  172539 
  

  

  

  

  6 
  

  

  586614 
  

  

  5867-85 
  

  

  170469 
  

   170420 
  

  

  49 
  

  

  170470 
  

  

  -1 
  

  

  7 
  

  

  . 
  Missing 
  

  

  

  

  

  

  8 
  

  

  601066 
  

   601250 
  

  

  166371 
  

   166320 
  

  

  51 
  

  

  166370 
  

  

  4-1 
  

  

  9 
  

  

  Missing 
  

  

  

  

  

  

  10 
  

  

  6160-63 
  

   6162-48 
  

  

  162321 
  

   162272 
  

  

  49 
  

  

  166322 
  

  

  -1 
  

  

  11 
  

  

  6237-68 
  

   6239-56 
  

  

  160316 
  

   160268 
  

  

  48 
  

  

  160316 
  

  

  

  

  12 
  

  

  621616 
  

   6218-14 
  

  

  158324 
  

   158270 
  

  

  50 
  

  

  158324 
  

  

  

  

  3 
  

  

  6396-08 
  

   6398-05 
  

  

  156346 
  

   156297 
  

  

  49 
  

  

  156344 
  

  

  +2 
  

  

  14 
  

  

  . 
  Missing 
  

  

  

  

  

  

  15 
  

  

  6560-56 
  

   6562-68 
  

  

  152426 
  

   152377 
  

  

  49 
  

  

  152423 
  

  

  +3 
  

  

  16 
  

  

  . 
  66450 
  

   66470 
  

  

  150489 
  

   150443 
  

  

  46 
  

  

  150481 
  

  

  +8 
  

  

  17 
  

  

  . 
  6731-12 
  

   6733-28 
  

  

  148564 
  

   148516 
  

  

  48 
  

  

  148552 
  

  

  + 
  12 
  

  

  Phil. 
  Mag. 
  S. 
  6. 
  Vol. 
  35. 
  No. 
  207. 
  March 
  1918. 
  

  

  