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THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1951 



These current densities are drawn in Fig. 14 for w = 1 and w = 3. It will 

 be observed that in each case a net current flows in one sense on one side 

 of the center line and in the opposite sense on the other side of the line. 



DENSITY 



1 



(c) 



Mk. 15 — Correspondence of modes between partially filled line and wholly filled line. 



We can now profitably compare the modes for the two types of lines. 

 Clearly there should be a one to one correspondence of the modes since the 

 partially filled line can be made to approach the completely filled line con- 

 tinuously by adding more laminated material. This correspondence is shown 



