( n. )
An instrument for exhibiting certain chromatic effects of light (depending upon the persistence of vision and mixture of colors) by means of rapidly rotating disks variously colored.
( n. )
An instrument for exhibiting certain chromatic effects of light (depending upon the persistence of vision and mixture of colors) by means of rapidly rotating disks variously colored.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012