236 ADVANCED ELECTRICITY AND MAGNETISM. 



line in a wave train moving to the right), and the lettered arrows 

 constitute the voltage helix from Fig. 170 (that is the lettered 



Ne 



A 

 A' 



currmt_di8tribution_corre8ponding to zero voltage everywhere (No. 1) 



I 

 I 



I 



axis of reference ,-5 



successive current distributions 



successive voltage distributions 



I 

 I 



I 



electric field (voltage) distribution corresponding to zero current everywhere 



iNo. S) 

 Fig. 174. 



arrows in Fig. 173 represent the voltages along the line in a wave 

 train moving to the left). The actual voltage at each point in 

 the standing wave train is the sum of the voltages at that point 



