Just astonishing images from Atomic Force Microscopes and Scanning Tunneling Microscopes. Included are images of a virus attacking a cell, the atomic structure of a lotus, E.coli, and human blood cells. The Atomic Force Microscope requires actually touching an object to photograph it but to do so, it must be very careful not to crush it. As a result, the AFM can sense forces of up to a few pico Newtons (one trillionth of a Newton: 1 N is the force of Earth's gravity on an object with a mass of about 102 g (1⁄9.8 kg) (such as a small apple)). The Scanning Tunneling Microscope can actually pick up and move a single atom.