460 KENNELLY, TAYLOR— TELEPHONE DIAPHRAGMS. 



X 



Xm 

 X 



Xa 



Z 



Zm 



Z 



Za = r^^/z._ 



Instantaneous displacement of diaphragm (cm.). 



Max. cyclic displacement of diaphragm (cm.). 



Complex velocity of diaphragm (cm. /sec). 



Max. cyclic velocity of diaphragm (cm. /sec). 



Max. cyclic velocity of diaphragm in presence of absorption 

 (cm. /sec). 



Max. cyclic complex velocity of secondary system (cm. /sec). 



Motional impedance of vibrator (absohms Z). 



Maximum motional impedance at resonance (absohms). 



Torque of mechanical impedance to angular velocity (dyne- 

 perp.-cm./rad. per sec. Z). Also force of mechanical im- 

 pedance to diaphragm velocity (dynes/kine Z). 



Mechanical impedance of secondary system (dynes/kine Z). 



Change of primary mechanical impedance, due to presence of 

 the absorption or secondary system (dynes/kine Z). 



Angular velocity of impressed frequency (radians per sec). 



Angular velocity of resonance (radians per sec). 



Angular velocity of earlier quadrantal point on motional circle 

 (radians per sec). 



Angular velocity of later quadrantal point on motional circle 

 (radians per sec). 



Impressed angular velocity producing maximum angular de- 

 flection (radians per sec). 



Angular velocity of free oscillation (radians per sec). 



Nearly equal to. 



Prefix indicating a C.G.S. magnetic unit. 



I cm. /sec 



Vibromotive force. 



Indication of a complex unit. 



