﻿332 
  

  

  Trowbridge 
  and 
  Richards 
  — 
  Temperature 
  and 
  

  

  Resistance 
  Standards. 
  

   Capacity 
  = 
  6,000. 
  Capacity=l 
  2,000. 
  Capacity 
  = 
  18,000. 
  

  

  Resistance 
  

  

  No. 
  of 
  half 
  oscilla- 
  

  

  No. 
  of 
  half 
  oscilla- 
  

  

  No. 
  of 
  half 
  os 
  

  

  Ohms. 
  

  

  tions. 
  = 
  

  

  tions. 
  = 
  

  

  tions. 
  = 
  

  

  

  

  

  37. 
  

  

  32 
  

  

  1 
  

  

  

  21. 
  

  

  21 
  

  

  2 
  

  

  16. 
  

  

  14. 
  

  

  13 
  

  

  3 
  

  

  12. 
  

  

  11. 
  

  

  10 
  

  

  4 
  

  

  9.5 
  

  

  8.5 
  

  

  7 
  

  

  5 
  

  

  8. 
  

  

  7. 
  

  

  6 
  

  

  6 
  

  

  7.5 
  

  

  6. 
  

  

  5 
  

  

  7 
  

  

  6.5 
  

  

  5. 
  

  

  4 
  

  

  10 
  

  

  5 
  

  

  4 
  

  

  3 
  

  

  15 
  

  

  3 
  

  

  3 
  

  

  

  20 
  

  

  2 
  

  

  2 
  

  

  1.7 
  

  

  30 
  

  

  1 
  

  

  1 
  

  

  1 
  

  

  Ohms 
  are 
  plotted 
  horizontally. 
  

  

  Half 
  oscillations 
  are 
  plotted 
  vertically. 
  

  

  