Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
An instrument for exhibiting certain chromatic effects of light(depending upon the persistence of vision and mixture of colors) bymeans of rapidly rotating disks variously colored.
Share your knowledge with the community
Browse our collection of 300,000+ community-written definitions
