Hans Busch (physicist)

Hans Busch (27 February 1884 in Jüchen, North Rhine-Westphalia, Germany – 16 February 1973 in Darmstadt, Hesse) was a German physicist. He was a pioneer of electron optics and laid the theoretical basis for the electron microscope.

Ernst Ruska read a paper by Busch in the academic journal Archives Elektrotechnik where Busch suggested that magnetic fields could be used to direct beams of electrons analogous to the way light is refracted by optical lenses.

In recognition of his work in the field, Busch was unanimously elected an honorary fellow of the German Society for Electron Microscopy at its first meeting in 1949.