﻿Positive 
  Ions 
  emitted 
  from 
  various 
  Hot 
  Bodies. 
  663 
  

  

  Silver. 
  

  

  Capacity, 
  

  

  micro- 
  

   farads. 
  

  

  Pressure, 
  Temperature, 
  

   mm. 
  absolute. 
  

  

  ! 
  

  

  Initial 
  

  

  Potential, 
  

  

  volts. 
  

  

  Mean 
  

   Current 
  

  

  X 
  

   Constant. 
  

  

  Mean 
  ! 
  ^^ 
  

  

  •0001 
  

  

  •002 
  

  

  1020 
  

  

  

  

  01 
  

  

  0-2 
  

   0-3 
  

  

  16-3 
  

  

  r 
  10-3 
  

  

  1 
  4-5 
  

  

  1-2 
  

  

  •3 
  

  

  •017 
  

  

  •046 
  ' 
  

   •106 
  1 
  

   ■2 
  1 
  

   •3 
  : 
  3-0x103 
  1 
  

  

  •01 
  

  

  •008 
  

  

  1150 
  

  

  

  

  0-1 
  

  

  0-2 
  

  

  0-3 
  

  

  0-4 
  

  

  680 
  

  

  216 
  

  

  93 
  

  

  25 
  

  

  7 
  

  

  •014 
  

  

  •112 
  

  

  •2 
  

  

  •3 
  

  

  •4 
  

  

  j 
  

   i 
  

  

  2-9x103! 
  

  

  Palladinm. 
  

  

  i 
  

  

  •01 
  

  

  004 
  

  

  1170 
  

  

  

  

  01 
  

  

  0-2 
  

  

  0-3 
  

  

  0-4 
  

  

  520 
  

  

  153 
  

  

  63 
  

  

  21 
  

  

  9 
  

  

  •01 
  

   •11 
  

   •20 
  

   •30 
  

   •40 
  

  

  1 
  

   3-4x103 
  

  

  Aluminium 
  Phosphate. 
  

  

  •01 
  

  

  0-02 
  

  

  1230 
  1 
  1660 
  

  

  1 
  0-1 
  620 
  

   1 
  0-2 
  i 
  290 
  

   1 
  0-3 
  180 
  

   j 
  0-4 
  125 
  

  

  •018 
  

  

  •11 
  

  

  •20 
  

  

  •30 
  

  

  •40 
  

  

  3-9x103 
  

   34x103 
  

  

  •01 
  

  

  0-006 
  

  

  1190 
  

  

  

  

  0-1 
  

  

  0-2 
  

  

  0-3 
  

  

  0-4 
  

  

  0-5 
  

  

  2080 
  

  

  590 
  

  

  250 
  

  

  94 
  

  

  35 
  

  

  4 
  

  

  •02 
  

   •11 
  

   •21 
  

   •30 
  

   •40 
  

   •50 
  

  

  Aluminium 
  Phosphate. 
  

  

  After 
  the 
  palladium 
  was 
  heated 
  for 
  somewhat 
  more 
  than 
  

   an 
  hour, 
  the 
  thermionic 
  current 
  at 
  zero 
  potential 
  decreased 
  

   to 
  about 
  20 
  per 
  cent, 
  of 
  its 
  initial 
  value. 
  Then 
  a 
  water 
  

   paste 
  of 
  aluminium 
  phosphate 
  was 
  placed 
  on 
  the 
  disk 
  and 
  

   the 
  thermionic 
  current 
  was 
  measured 
  as 
  noted 
  in 
  the 
  table. 
  

  

  