Picture Riddle in February

SEM in Focus

Black, white—and countless shades of gray: scanning electron microscopy (SEM) reveals structures that remain hidden to the naked eye. Without color, but with maximum detail, SEM images open up a fascinating microworld of surfaces, contrasts, and forms. But what does the image really show?

To enlarge simply click on the picture.

Please feel free to send your suggestions for solutions to the following email address: raetselwiese@laop-consult.de. The correct answer will be revealed at the beginning of each month.