THE TWISTOR 



1331 



wire analysis which is given in Appendix I. Only the results of the com- 

 posite wire case will be given here. As indicated in Fig.* 10, pi and p2 



AT, 



v(r)- 



V(0) 



(a) 



(b) 



Fig. 10 — (a) Composite wire is composed of non-magnetic core covered by a 

 magnetic skin, (b) A voltage V{r) is induced in the wire during flux reversal. 



are the resistivities of the inner (non-magnetic) and outer (magnetic) 

 materials. The inner material is contained within a radius ri . The over- 

 all wire radius is Ti . Defining a = n/r-i , if Fobs is the voltage obser\'ed 

 across the ends of the composite wire twistor memory cell, and T^(0) 

 is the induced voltage at ?• = for a solid magnetic wire of radius r-z , 

 T^obs = bV{0), and 



+ 0" 



a 



(19) 



Pi 



P2 



(1 - a2) -j- a" 



The parameter "6" reduces to \ for a = in agreement with (2) which 

 was derived for the solid wire case. Table I gives "b" for various material 

 and geometry combinations. 



Table I — The Parameter ''6" 



