Ключевые слова: a light source, abstract the lines, amplitude, artificial light source, background, blur, bright, clarity light source, coordination, design elements, diagonal stripes, diffraction, dispersion, electromagnetic radiation, electromagnetic wave, electron energy, energy, focus, frequency, geometrical optics, gradient, laser, layers, light, lighting, linear optics, microwave, mottled, nonlinear optics, optical design, optical fibers, optics, power, radio waves, reflection, refraction, regular, scattering, smooth, speed, structure, texture, textures, the photoelectric effect, the speed, the speed of light, tortuous, transmission, transparency, vibration, vision, visual, wavelength, xrays,