Ключевые слова: abstract, array, black, burst, center, central, centric, centrifuge, circle, circlet, circuit, circular, coil, concentric, contrast, cycle, cyclic, design, element, emission, epicenter, focus, geometric, geometrical, geometry, growth, hypnosis, line, monochrome, orbit, radar, radial, radiating, radiation, radius, random, ring, ripple, shape, sonar, spire, spreading, twirl, twist, vortex, wheel, whirl, white,