Some Unsolved Basic Problems

Electromagnetic hazards using bioimpedance and bioelectricity methods must be considered. How is the electric current spread from the electrodes in living tissue Can we 

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Some of the unsolved problems in contemporary electrodynamics draw attention to deeper (more profound) evidence, new ideas and new theories or equations. The aim of this historical introduction is to find the deeper evidence and new basic concepts and connections. The guiding principle is the investigation of light propagation. 

C3 cyclopolymerization has not yet been finished and has still some interesting unsolved problems as mentioned in this paper. A few of initial objects, however, have been accomplished. That is, it gave the new material which has high n-basicity due to cyclophane units. The future progress is hoped to present further more novel materials produced by the principle of C3 cyclopolymerization where the attractive interaction between cationic site and aromatic n-system functions during the polymerization. 

In spite of its great fundamental interest and commercial importance, one of the most important unsolved problems in the aiea of elastomers and rubberlike elasticity is the lack of a good molecular understanding of the reinforcement provided by fillers such as carbon black and silica [1-5]. More specifically, the reinforcement of elastomers is an interesting aspect in the basic research of nanocomposites in general, and is of much practical importance since the improvements in properties fillers provide are critically important with regard to the utilization of elastomers in almost all commercially significant applications. Some of the work on this problem has involved analytical theory [6-12], but most of it is based on a variety of computer simulations [13-46]. 

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