﻿200 
  Radiation-Phenomena 
  in 
  the 
  Magnetic 
  Field. 
  

  

  X. 
  

  

  Distance 
  between 
  

   components 
  in 
  

   T^milliiiL 
  

  

  Scale 
  of 
  

   negative. 
  

  

  Order 
  of 
  

   spectrum. 
  

  

  H. 
  

  

  4811 
  

  

  18-6 
  

  

  1 
  millim. 
  

  

  2 
  

  

  32 
  . 
  10 
  3 
  

  

  4722 
  

  

  20-7 
  

  

  = 
  4-41 
  A.U. 
  

  

  

  

  4680 
  

  

  25*1 
  

  

  

  

  

  3345 
  

   3303 
  

  

  Imperceptible 
  

  

  1 
  millim. 
  

   = 
  2-94 
  A.U. 
  

  

  3 
  

  

  32 
  . 
  10 
  3 
  

  

  3282 
  

  

  "o" 
  

  

  

  

  

  It 
  appears, 
  as 
  is 
  also 
  indicated 
  in 
  the 
  table, 
  that 
  some 
  lines 
  

   are 
  not 
  changed 
  under 
  the 
  influence 
  of 
  the 
  field, 
  or 
  at 
  least 
  so 
  

   little 
  that 
  the 
  magnetic 
  change, 
  if 
  it 
  exists, 
  is 
  extremely 
  

   small*. 
  It 
  deserves 
  to 
  be 
  noted 
  that 
  between 
  the 
  first 
  three 
  

   lines 
  in 
  the 
  table 
  clearly 
  showing 
  the 
  magnetic 
  change, 
  and 
  

   the 
  last 
  three 
  not 
  showing 
  it, 
  there 
  exists 
  also 
  another 
  inter- 
  

   esting 
  difference. 
  Indeed, 
  the 
  first 
  are 
  the 
  group 
  of 
  three 
  

   lines 
  resulting 
  from 
  Kayser 
  and 
  Hunge's 
  second 
  subor- 
  

   dinate 
  series 
  for 
  the 
  value 
  3 
  of 
  the 
  coefficient 
  n 
  in 
  their 
  

   formula 
  f. 
  The 
  second 
  group 
  of 
  three 
  lines 
  follows 
  from 
  the 
  

   first 
  subordinate 
  series, 
  n 
  being 
  4. 
  Further 
  inquiry 
  must 
  

   decide 
  whether 
  all 
  lines 
  of 
  the 
  first 
  series 
  are 
  not 
  influenced, 
  

   only 
  those 
  of 
  the 
  second 
  being 
  changed. 
  

  

  5. 
  Cadmium. 
  — 
  

  

  Distance 
  between 
  

   components 
  in 
  Scale 
  of 
  Order 
  of 
  

  

  X. 
  T 
  jjo 
  millim. 
  negative. 
  spectrum. 
  H. 
  

  

  4800 
  22-0 
  1 
  millim. 
  2 
  32 
  . 
  10 
  3 
  

  

  4678 
  24*2 
  =4*41 
  A.U. 
  

  

  These 
  are 
  lines 
  of 
  Kayser 
  and 
  Runge's 
  second 
  subordinate 
  

   series 
  % 
  3 
  n 
  being 
  3 
  (cf. 
  zinc) 
  . 
  The 
  line 
  5086, 
  also 
  of 
  this 
  series, 
  

   unhappily 
  could 
  not 
  be 
  measured, 
  being 
  situated 
  too 
  near 
  the 
  

   border 
  of 
  the 
  negative. 
  

  

  6. 
  Copper. 
  — 
  The 
  lines 
  of 
  the 
  copper 
  spectrum 
  are, 
  at 
  least 
  

   between 
  4800 
  and 
  4300, 
  so 
  hazy 
  that 
  they 
  could 
  not 
  be 
  

   measured. 
  A 
  rough 
  estimation 
  of 
  some 
  lines 
  gave 
  about 
  

   30 
  hundredths 
  of 
  a 
  millimetre 
  for 
  the 
  distance 
  between 
  the 
  

   components. 
  

  

  7. 
  Tin 
  — 
  

  

  

  

  

  Distance 
  between 
  

  

  

  

  

  components 
  in 
  

  

  Scale 
  of 
  

  

  Order 
  of 
  

  

  

  X. 
  T 
  -Jo 
  millim. 
  

  

  negative. 
  

  

  spectrum. 
  

  

  H. 
  

  

  4585 
  ±35 
  

  

  1 
  millim. 
  

  

  2 
  

  

  32 
  . 
  10 
  3 
  

  

  4525 
  Imperceptible 
  

  

  = 
  4-46 
  A.U. 
  

  

  

  

  4447 
  + 
  f 
  

  

  

  

  

  4184 
  + 
  ? 
  

  

  

  

  

  * 
  Cf. 
  Lorentz, 
  I. 
  c. 
  p. 
  284. 
  

  

  t 
  Kayser 
  u. 
  Runge, 
  Wied. 
  Ann. 
  Bd. 
  xliii. 
  p. 
  394 
  (1891). 
  

  

  % 
  Kayser 
  u. 
  Runge, 
  /. 
  c. 
  p. 
  399. 
  

  

  