CHAFFEE. — IMPACT EXCITATION OF ELECTRIC OSCILLATIONS. 279 



§2 



§2 



00 ^ 



Sco 



CD ^ 



§^. 



§c. 



CD 



O 

 O 



O 



o 



O 

 O 

 CO 



O 

 O 



o 

 o 



Figure 7. Experimental Chart. 



