﻿368 
  Prof. 
  Richardson 
  and 
  Mr. 
  Brown 
  on 
  the 
  Kinetic 
  

  

  Avith 
  circles 
  round 
  them 
  denote 
  the 
  values 
  of 
  the 
  current 
  

   recorded 
  in 
  the 
  preceding 
  table 
  at 
  the 
  potentials 
  given 
  by 
  

   the 
  abscissae. 
  These 
  points 
  are 
  seen 
  to 
  be 
  distributed 
  fairly 
  

   evenly 
  about 
  the 
  smooth 
  curve 
  shown. 
  In 
  order 
  to 
  test 
  the 
  

   theoretical 
  formulae 
  (10) 
  and 
  (11) 
  a 
  series 
  of 
  points 
  on 
  the 
  

  

  Fig-. 
  

  

  •3 
  -4 
  

  

  Potential 
  . 
  Volts. 
  

  

  smooth 
  curve 
  were 
  taken, 
  and 
  the 
  logarithms 
  of 
  the 
  corre- 
  

   sponding 
  values 
  of 
  the 
  current 
  were 
  obtained. 
  These 
  are 
  

   plotted 
  against 
  the 
  potential-difference 
  in 
  the 
  figure. 
  The 
  

   scale 
  of 
  the 
  logarithmic 
  curve 
  is 
  shown 
  on 
  the 
  right-hand 
  

   side 
  of 
  the 
  diagram. 
  

  

  