All thumbnails on this page are owned by other people. Here is why I am using them.
Some physiograms on the web
Heidersberger calls his equipment "The Rhythmograph". The large version is located in the Institut of Heidersberger and takes nearly twenty square meters. It has four pendulums, and produces light tracks on photographic material using a mechanically coupled mirror and a source of light. By controlling the frequency, phase shift, amplitude and amplitude of the pendulums, two of which drive the mirror vertically, two horizontally, "three-dimensional" images result:
usuff provides an on-line explanatory "paper" about "pendulum photography". On the basis of the images shown, he has control of precision, complexity, and colour.
Jake's physiograms have delicacy and precision sustained over a longish exposure.
Paul Curran? Or "something28"?
I'm not sure who this is, but he or she deserves a place here:
Quality rather than quantity! I would like to see more from Scott.
Harmonograms and Pendulograms
Related topics are harmonographs, and the harmonograms that are produced from them. Harmonographs are devices that draw similar traces, but typically using pen on paper. Similarly, pendulographs produce pendulograms.
I have copied some thumbnails from other people's web sites to this one, or even created thumbnails from images of their pages. I only do this for the purpose of providing a link back to the relevant part of their web site, as a replacement for, or in addition to, a conventional text link. I always name the owner of the work. I do this always with the intention of directing interested readers to those other web sites
I follow the rules I set for other people, when I grant a limited right to copy thumbnails from this web site, or to create and use a thumbnail from part of a page of this web site, without explicit permission.
If anyone objects to this practice, I will of course remove their thumbnails. I may also purge all links and references to their web sites and other works at the same time.