radial circles . converge circle lines. repeating, expand circles from center, epicenter. emission, circulate, loop

arc arch beams bullseye burst center centre circle circulate circulation confluence converge convergence converging cycle cyclic dissension emission epicenter epicentre expansion globose globular helix inward linear lines loop many merging radar radiate radiating radiation rays repetition rings ripple rotation round shockwave simple spiral stripes swirl twirl twist vector vortex whirligig