Kinetic abstracts by Dr. Al Kana, created entirely by pendulum motion (penlight and string) and recorded on 4x5 film. No digital manipulation was used in this process. Sometimes known as spiralgraphs, physiograms or harmonographs, these fine art images were produced using scientific formulas that allow each design to be recreated. All images are copyrighted by the creator and are for sale. You can get more information at http://www.artoflightandmotion.com