ELECTRIC OSCILLATIONS AND ELECTRIC WAVES. 219 



showing voltage or current at any point as functions of elapsed 

 times. The ampere-time curves in the lower parts of Figs. 153, 

 154 and 155, and in Figs. 156 and 157 were obtained in this way. 



wire 



wire 



wire 



+E 



+ 1 



-IE 



-E 



axis of I 



axis of / 



curve of current^ growth at. B curve of current growth at R 



Fig. 155. 

 Same as Fig. 153 except that distant end of line is connected to a non-inductive 



circuit of which the resistance is R = 3 . In this case the ribbon wave is only 



partially reflected from the end R and the successive laps of the ribbon wave are 

 thereby greatly reduced in intensity as represented by the shading. 



Note. The character of the reflection at B in Figs. 153, 154 

 and 155 is determined by the condition that the sum of the vol- 



