con- 
The 
494     Prof.  Wilson  and  Mr.  Gold  :  Electrical  Conductivity  of 
steady  currents.  It  will  be  seen  that,  roughly  speaking,  the 
relative  conductivity  for  steady  currents  varies  in  a  similar 
way  to  the  conductivity  for  rapidly  alternating  currents  as 
represented  by  J--  J. 
The   last    column  contains   the  square  root    of   the 
ductivity    for    steady    currents    divided    by    -j  —  f- 
numbers  in  this  column  do  not  vary  much,  showing  that 
the  conductivity  for  rapidly  alternating  currents  varies, 
roughly  speaking,  as  the  square  root  of  the  conductivity  for 
steady  currents. 
The  conductivities  of  KCl  and  RbCl  were  found  to  vary 
nearly  as  the  square  root  of  the  concentration  in  the  case  of 
steady  currents  ;  so  that  we  should  expect  them  to  vary  as 
the  fourth  root  of  the  concentration  for  rapidly  alternating 
currents.    The  following  table  showsithat  this  is  nearly  the  case. 
Salt. 
Grams 
p?r  litre. 
(C) 
1      1 
d2  d; 
4 
*/v/c. 
RbCl 
48-1 
9-6 
1-92 
100 
20-8 
10 
424 
315 
214 
4-70 
3-03 
1-70 
1-6 
1-79 
1-81 
1-49 
1-42 
1-70 
■'  ;;    ;;; 
KCl  
Considering  the  large  variation  in  C  the  values  of  hj^/Q 
are  surprisingly  constant  for  these  two  salts. 
The  following  table  shows  the  relative  variation  of  the 
conductivity  CsCl  for  steady  and  alternating  currents.  The 
numbers  are  taken  from  fios.  4  and  5. 
Grams 
per  litre. 
1      1 
d2     dv' 
(*) 
Steady 
Current. 
! 
CsCl     
5)               
20 
15 
10 
5 
1 
7-3 
64 
5-3 
4-1 
26 
26 
195 
13 
7-4 
30 
070 
0-69 
0-68 
0-66 
067 
