ELECTRICAL TRANSMISSION ALONG WIRES 25 



given above breaks down, and the problem must be attacked from the 

 rigorous equations. These have never been solved in general, in fact 

 the only rigorous solution known to the writer is for the case of 

 circular symmetry and even this involves the location of the roots of 

 an extremely complicated transcendental equation. Fortunately, in 

 view of these difificulties, the general case of quite imperfect conductors 

 or imperfect dielectric media is of small technical importance for the 

 reason given above. 



