


This image appears at first glance to be a desert canyon, perhaps somewhere in the American southwest. It is, however, an image taken with a scanning electron microscope of a microcrack in a small piece of steel. The crack is a mere 67 millionths of a meter (micrometers) wide. Image captured and colored by Martina Dienstleder at FEI Company.
microcrack in a small piece of steel
(via TumbleOn)
Wtf