﻿Duddell. 
  Phil. 
  Mag. 
  Ser. 
  6, 
  Yol. 
  16. 
  PL 
  XIV. 
  

  

  P.D. 
  and 
  Current 
  Wave-Forms 
  of 
  Short 
  Sparks. 
  

   Fig. 
  5. 
  — 
  Spark 
  -length 
  5 
  mm. 
  

  

  V 
  

  

  immm^ 
  m 
  / 
  m0 
  S. 
  

  

  \ 
  

  

  II 
  . 
  I 
  MfllT.lMI 
  — 
  t 
  i 
  l 
  l 
  

  

  y/ 
  

  

  * 
  / 
  tm 
  f 
  00 
  Smmm 
  ma 
  mmm 
  m 
  m»: 
  p 
  SI 
  J^ 
  mim! 
  ^t 
  

  

  y 
  

  

  — 
  Zero 
  line 
  

   for 
  Current. 
  

  

  -Zero 
  line 
  

   for 
  P.D. 
  

  

  Fig. 
  6. 
  — 
  Spark-length 
  15 
  mm. 
  

  

  v 
  

  

  \ 
  

  

  •jtMK 
  m 
  m 
  m-i 
  »m- 
  w^w 
  

  

  **\^ 
  

  

  '/ 
  

  

  ."\- 
  

  

  J 
  

  

  mm 
  mmn 
  n>, 
  l 
  uwnum 
  w 
  w 
  

  

  Zero 
  line 
  

   for 
  Cun*ent. 
  

  

  Zero 
  line 
  

   for 
  P.D. 
  

  

  