2021 年 25 巻 5 号 p. 193-200
We showed that the partial reflection that simultaneously occurs with refraction can be analyzed by two methods, one introducing phase and amplitude and the other assuming electromagnetic waves, both of which obtain the same result. Both methods use the refractive index and reflection coefficient. In the method assuming electromagnetic waves, the refractive index and reflection coefficient are determined on the basis of the relationship between electric and magnetic fields, i.e., the physical properties of the electromagnetic waves. A space with electric and magnetic fields as two functions can be discussed in circuit theory, which implies an important application of circuit theory. Moreover, a resonant phenomenon is observed by the analysis of refraction and partial reflection. Waveforms with a predetermined angular frequency can be reconstructed and differ from those of harmonic oscillators discussed with electromagnetic waves. Thus, another important application of circuit theory is also shown in this session.
