1981
Technology  


The scanning tunneling microscope is invented.

The scanning tunneling microscope is invented. The German physicist Gerd Binnig (right) and the Swiss physicist Heinrich Rohrer (left) develop a microscope in which a specimen is scanned by measuring the minute electrical current between the surface and an extremely fine metallic tip. The technique can produce a computer-generated map of a surface showing the outlines of individual atoms.
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