a toy consisting of a tube containing mirrors and pieces of coloured glass or paper, whose reflections produce changing fin patterns that are visible through an eyehole when the tube is rotated.
• a constantly changing pattern or sequence of objects or elements: the fish moved in a kaleidoscope of colour.
ORIGIN early 19th cent.: from Greek kalos ‘beautiful’ + eidos ‘form’
one could (i would) argue that its a little strange, even unnatural to take one of nature’s most interesting components; asymmetry, and render it to a pretty base human concept; symmetric, but sometimes it works out ok as long as it doesn’t happen with any frequency. human concepts and trippy images or not, kudos to the Greeks for having created a beautiful word and for fish being just what they are, breathtaking.
for further and quite interesting thoughts on symmetry click HERE.