Abstract: Dispersion of electromagnetic waves

\nSumming up, it should be illustrious that the spreading of electromagnetic waftures can be divided into absolute frequency (due to the colony on frequency) and spatial (due to the dependance of the same parameters of the wave vector). As already mentioned, the frequency diffusion is essential, if the frequency of electromagnetic waves is close to the innate(p) frequencies of vibrations in the environment. same spatial scattering becomes significant when the wavelength is parallel with some typical dimensions.\nBy utilize dielectrics in change electromagnetic handle need to cope the natural frequencies of the molecules of the dielectric material to image the nature of the dependence of the refractive indicator and compactness (and bump parameters), and the frequency in order to overturn (unless desired) resonance absorption of electromagnetic waves.\nA characteristic feature film of dielectrics is the need separate consideration for the dispersion phenomena of polar and nonionic molecules due to the figurehead (absence seizure) of the dipole consequence in the absence of an external electromagnetic field in polar (nonpolar) dielectrics.