Some years later, the semiconductor historians Ernest Braun and Stuart Macdonald would note that “everything in a solid happens on such a minute scale that not even a microscope, even an electron microscope, can resolve the elementary processes. The scientist must operate at a level of abstraction of which the untrained mind is not capable in order to visualize processes which cannot be seen.” So the theorists at Bell Labs worked on blackboards, attempting to “see,” at a subatomic level, the surfaces and interiors of semiconductor crystals;
