﻿Properties 
  of 
  Films 
  of 
  Magnetic 
  Metals. 
  

  

  Table 
  X. 
  — 
  Metallic 
  Iron. 
  

  

  Thickness: 
  No. 
  11, 
  15-4 
  Xl0~ 
  7 
  ; 
  No. 
  15, 
  19xl0* 
  7 
  : 
  

   No. 
  16, 
  7 
  x 
  10- 
  7 
  cm. 
  Field: 
  13,200 
  c.G.s. 
  

  

  851 
  

  

  

  Rotation 
  

  

  - 
  X 
  10-3. 
  

  

  Ellipticity 
  

  

  Transmission 
  

   (per 
  cent.). 
  

  

  

  Thicknes 
  

  

  Thickness 
  

  

  Wave- 
  

   length. 
  

  

  

  

  

  

  

  Extinct. 
  

   X 
  10-6. 
  

  

  

  

  

  

  

  

  

  No. 
  11. 
  

  

  No. 
  15. 
  

  

  No. 
  11. 
  

  

  No. 
  15. 
  

  

  No. 
  11. 
  

  

  No. 
  16. 
  

  

  

  406 
  ... 
  

  

  520 
  

  

  

  

  

  

  

  

  417 
  ... 
  

  

  535 
  

  

  520 
  

  

  12000 
  

  

  

  

  

  

  431 
  ... 
  

  

  550 
  

  

  

  

  

  

  

  

  440 
  ... 
  

  

  570 
  

  

  560 
  

  

  11500 
  

  

  10700 
  

  

  

  

  

  460 
  ... 
  

  

  600 
  

  

  

  11200 
  

  

  

  

  

  

  480 
  ... 
  

  

  610 
  

  

  640 
  

  

  10700 
  

  

  9800 
  

  

  •88 
  

  

  8-5 
  

  

  3-3 
  

  

  500 
  ... 
  

  

  690 
  

  

  

  10300 
  

  

  

  •92 
  

  

  9-0 
  

  

  33 
  

  

  520 
  ... 
  

  

  700 
  

  

  680 
  

  

  10000 
  

  

  9200 
  

  

  •97 
  

  

  8-7 
  

  

  32 
  

  

  540 
  ... 
  

  

  690 
  

  

  

  9800 
  

  

  

  101 
  

  

  8-6 
  

  

  31 
  

  

  560 
  ... 
  

  

  740 
  

  

  750 
  

  

  9300 
  

  

  8700 
  

  

  1-03 
  

  

  8-9 
  

  

  3T 
  

  

  580 
  ... 
  

  

  760 
  

  

  ... 
  

  

  90C0 
  

  

  

  1-04 
  

  

  93 
  

  

  32 
  

  

  600 
  ... 
  

  

  780 
  

  

  790 
  

  

  8700 
  

  

  8300 
  

  

  1-06 
  

  

  92 
  

  

  31 
  

  

  620 
  ... 
  

  

  

  

  

  

  1-06 
  

  

  9-2 
  

  

  31 
  

  

  630 
  ... 
  

  

  780 
  

  

  

  8500 
  

  

  8000 
  

  

  

  

  

  640 
  ... 
  

  

  

  

  

  

  1-04 
  

  

  90 
  

  

  3-i 
  

  

  660 
  ... 
  

  

  760 
  

  

  830 
  

  

  7800 
  

  

  

  1-06 
  

  

  91 
  

  

  31 
  

  

  680 
  ... 
  

  

  780 
  

  

  

  8000 
  

  

  i 
  

  

  

  101 
  

  

  8-5 
  

  

  3-1 
  

  

  The 
  variation 
  of 
  both 
  magnetic 
  rotation 
  and 
  ellipticity 
  

   with 
  field-strength 
  is 
  given, 
  for 
  film 
  15, 
  in 
  Table 
  XI. 
  The 
  

   ratio 
  of 
  the 
  mean 
  ellipticity 
  to 
  the 
  mean 
  rotation 
  for 
  those 
  

  

  Table 
  XI. 
  — 
  Metallic 
  Iron. 
  

   Film 
  No. 
  15. 
  

  

  Field: 
  

  

  2800 
  

  

  2700 
  

  

  5800 
  

  

  5700 
  

  

  7500 
  

  

  7600 
  

  

  13200 
  

  

  1 
  

   13200 
  '15500 
  15500 
  

  

  l 
  

  

  Wave- 
  

   length. 
  

  

  Rot. 
  

  

  Ellipt. 
  

  

  xio 
  3 
  . 
  

  

  Rot. 
  

  

  Ellipt, 
  

  

  xio 
  3 
  . 
  

  

  Rot. 
  

  

  Ellipt. 
  

  

  xio 
  3 
  . 
  

  

  Rot. 
  

  

  Ellipt. 
  

  

  xio 
  3 
  . 
  

  

  Rot. 
  

  

  ElliptJ 
  

   XlO 
  3 
  , 
  

  

  440... 
  

  

  •29 
  

  

  5-05 
  

  

  •68 
  

  

  10-2 
  

  

  •74 
  

  

  14-5 
  

  

  1-06 
  

  

  20-4 
  

  

  1-17 
  

  

  

  480... 
  

  

  •33 
  

  

  4-7 
  

  

  •66 
  

  

  96 
  

  

  •86 
  

  

  13-4 
  

  

  1-21 
  

  

  18-7 
  

  

  1-22 
  

  

  

  520... 
  

  

  •34 
  

  

  45 
  

  

  •72 
  

  

  9-1 
  

  

  •91 
  

  

  12-5 
  

  

  1-30 
  

  

  17-6 
  

  

  1-34 
  

  

  18-2 
  

  

  560... 
  

  

  •40 
  

  

  41 
  

  

  •79 
  

  

  8-4 
  

  

  1-00 
  

  

  ITS 
  

  

  T43 
  

  

  16-6 
  

  

  1-47 
  

  

  17T 
  

  

  600... 
  

  

  •35 
  

  

  39 
  

  

  •79 
  

  

  8-4 
  

  

  1-08 
  

  

  11-2 
  

  

  1-50 
  

  

  15-6 
  

  

  1-52 
  

  

  16-4 
  

  

  630... 
  

  

  

  3-7 
  

  

  

  7-8 
  

  

  

  

  

  14-6 
  

  

  

  15-1 
  

  

  660... 
  

  

  •40 
  

  

  

  •82 
  

  

  ... 
  

  

  1-13 
  

  

  

  1-58 
  

  

  

  1-65 
  

  

  

  Ratio 
  of 
  1 
  -,, 
  Q 
  

   Means) 
  118 
  

  

  11-4 
  

  

  11-8 
  

  

  11-8 
  11-3 
  

  

  3K2 
  

  

  