I've been trying to find the source of this image, or ones similar to it, for yonks. The image is incomplete, which doesn't help. The reason I ask this on a physics forum is because it reminds me of those images out of the physics textbooks I used to have. Looking at the concentric rings and how they are displaced in relation to each other it looks to me like this picture is showing a torus (the rings are more closely bunched together at the outside and the towards the middle of the picture). Plotted on this torus are two lines. The first line snakes it's way around the graph in a close series of crests and valleys. The second line is plotted so it overlaps some of the crests and valleys of the first line. There are a number of plusses and minuses around the outside of the torus that are hard to see. There are also figures which I assume to be numbers inside small circles around the torus, but they are far too blurry to make out. In the very centre of the picture is what looks like a incomplete pyramid or a tesseract seen from above. I believe this might have been added over the top of the graph along with the tube that leads up and out of the picture. I'm more interested in the strange graph underneath them!