The structure of 12 is embedded in all the worlds of spirit and matter, showing Itself as patterns of light and sound. Paul Twitchell wrote in The ECK-Vidya:

"The sound current with all its different notes and musical harmonies which can be heard on the various planes as separate sounds may come forth in the twelve rays of man. These are the vibrations which are attached to each individual Soul at the time of Its birth on this planet, and throughout each incarnation It has in the physical body as well as the psychic bodies which It retains and passes through in varied incarnations until It reaches the Atma (Fifth) plane where It is purified."

If you're interested in finding out more about the 12-in-HU kaleidoscope, please visit
http://artineck.jimdo.com/
click on "Interactive." You can control the movement of the patterns with your mouse there. (less info)