The Droste effect with Screen Sharing
The so-called Droste effect, where a smaller figure is placed inside a large version of itself, is also easily made live when a camera is used to film the screen on which its image is displayed.
I accidently rediscovered it a few years ago, while testing the performance of the Screen Sharing facility of Mac OS X. I used Screen Sharing to work on a Mac Mini from my laptop. Then, inside this session, I shared the screen of the laptop again, so that I had the screen of my laptop directly in front of me, and inside the Mini's screen sharing session, the screen-shared version of it. Since this is the equivalent of the camera situation, the Droste effect was there.
As there some delay in the passing of the new image over the network, you actually see the image building up. Thus, you can make a screenshot that shows an intermediate step.
© 2014 Jan Leys. This text may be reproduced if the author's name is mentioned, the text is unmodified and the original source is credited.