Re:A Boy and His Atom: Smallest Stop-Motion Film [video]
by SAI_Peregrinus on Sunday October 15, 2017 @03:30AM
(#15476257)
An atomic force microscope produces images by sensing atoms with a probe. It scans in a planar layer, analogous to a very narrow depth of field for a film camera. The background atoms do exert force on the probe, but much more weakly.
The real question is, how is the microscope's output converted into a visual picture? Hint, it isn't by lensing light. Thus there is no "focus" to be out of.