In this scanning tunneling microscope (STM) image, electron
density waves are seen to be breaking around two atom-sized defects on
the surface of a copper crystal. The resultant standing waves result
from the interference of the electron waves scattering from the defects.
Courtesy, Don Eigler, IBM.
Textbook: Rohlf, "Modern Physics
from alpha to Z", will be in the bookstore soon.
