The other days riddle was a bubble of soap on its way over the roof of the house. It is shot with my telelens.
Thanks for the guesses – and the photos can now be seen at flickr.
The riddle was two days ago.
If you are intersted in visual illusions or negative afterimages, please take a look at yesterdays post – and especially go to Steffes comment and his link. You will get a most fantastic experience from follwing his instructions.
It is pretty.
But now the mystery is, where did it come from? Were YOU out there blowing soap bubbles? 🙂