a complex pattern of constantly changing colors and shapes
<noun.cognition>
an optical toy in a tube; it produces symmetrical patterns as bits of colored glass are reflected by mirrors
<noun.artifact>
Kaleidoscope \Ka*lei"do*scope\, n. [Gr. ? beautiful + e'i^dos form + -scope.] An instrument invented by Sir David Brewster, which contains loose fragments of colored glass, etc., and reflecting surfaces so arranged that changes of position exhibit its contents in an endless variety of beautiful colors and symmetrical forms. It has been much employed in arts of design.
Shifting like the fragments of colored glass in the kaleidoscope. --G. W. Cable.
Every three months, with a turn of the kaleidoscope, we see a new pattern.
Now, you probably think that's radical, but viewed through the kaleidoscope of history, it isn't.
One jostles us with a teeming kaleidoscope of places, people and events of almost grotesque vividness, the other, as Charlotte Bronte disdainfully observed in a brilliantly wrong-headed piece of criticism, is a Chinese miniaturist.
Adding to the garage-sale atmosphere, many of the 105 products on display aren't that exciting, including a low-tech kaleidoscope, called Kool Tube, that consists of a rubber hose with some painting inside.