Tham khảo tài liệu 'electromagnetic waves propagation in complex matter part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Fundamental Problems of the Electrodynamics of Heterogeneous Media with Boundary Conditions Corresponding to the Total-Current Continuity 47 meaning of these components of the current is largely dependent on selection of an equivalent electric circuit. A unique equivalent circuit - series or parallel connection of the capacitor the resistor and the inductor - does not exist it is determined by a more or less adequate agreement with experimental data. In the case of electrolytic capacitors the role of one plate is played by the electric double layer with a specific resistance much higher than the resistance of metallic plates. Therefore decrease in the capacitance with frequency is observed for such capacitors even in the acoustic-frequency range Jaeger 1977 . Circuits equivalent to an electrolytic capacitor are very bulky up to 12 R L and C elements can be counted in them therefore it is difficult to obtain a true value of . the electrolyte capacitance. In Jaeger 1977 experimental methods of measurement of the dielectric properties of electrolyte solutions at different frequencies are given and e and e are determined. The frequency dependence of dispersion and absorption are essentially different consequences of one phenomenon dielectricpolarization inertia Jaeger 1977 . In actual fact the dependence e ffl is attributable to the presence of the resistance of the electric double layer and to the electrochemical cell in the electrolytic capacitor being a system with continuously distributed parameters in which the signal velocity is a finite quantity. Actually e and e are certain integral characteristics of a material at a prescribed constant temperature which are determined by the geometry of the sample and the properties of the electric double layer. It is common knowledge that in the case of a field arbitrarily dependent on time any reliable calculation of the absorbed energy in terms of e ffl turns out to be impossible Landau . Lifshits . 1982 . This can
