FERROMAGNETIC DISTORTION OF A WAVE 



329 



As long as one frequency is less than twice the other the undulations 

 in the peaks of the magnetizing force will be regular and gradual. If 

 the higher frequency be raised to more than twice the lower, the 

 undulations become more abrupt and complex, and increasingly so 



(d) (e) 



Fig. 1 — Types of hysteresis loops characteristic of a two-frequency magnetizing force. 



as it is raised still more. The complexity attendant upon the forma- 

 tion of the hysteresis loops becomes greater and the simplifying artifices 

 heretofore suggested no longer apply. 



When one frequency has become several times the other, the higher 



