You can watch and create (set in motion) your own harmonographs online here . This one is from the Technorama in Switzerland and requires a Flash plugin.
screen capture of the Technorama harmonograph program
A handy reference website
You can watch and create (set in motion) your own harmonographs online here . This one is from the Technorama in Switzerland and requires a Flash plugin.
screen capture of the Technorama harmonograph program