The September 1964 edition of "Practical Photography" published the above images of mine. Months earlier, its sister publication "Photo News Weekly" had published similar images by me.
These were "physiograms", (swinging light images or "pendulum photographs"), but apparently unlike any that had been published before. They are possibly unlike any that have been published since. Here is their story.
5 pages on this topic:
Here are 2 galleries: one of the original monochrome images, and the other of more colourful processed images.