- strobic circles
- strobic circles,a group of concentric circles that appear to spin round or revolve when the paper or object they are drawn on is moved about.
Useful english dictionary. 2012.
Useful english dictionary. 2012.
strobic disk — noun : a disk marked with a set of concentric rings or toothed wheels that is moved in a circular path without causing it to revolve on its own axis causing the figures to appear to revolve on their axes * * * strobic disk, a disk containing… … Useful english dictionary