Here is a picture of a slinky that has been turned inside out, or reversed, or … something.
You can see that the circular logo of Questacon is still present, but each of the segments has been reversed.
Frankly, I’m at a bit of a loss to explain it. Well, I can imagine stretching the diameter of the first ring so that it can slide over the outside of the body of the slinky, and then repeating the process so that the entire slinky is turned back on itself. But that would be extremely difficult, and anyway that’s not what I did!
What happened was the slinky mysteriously got itself into a tangle (a 6-year-old may or may not have been involved). I tried to untangle it, fruitlessly, and then noticed that the slinky had been turned inside out in the process. I then cut off the tangled part — which is why the picture contains only part of a logo — and took the photo.
Anyone else care to have a shot at explaining it?