Suchergebnisse
Suchergebnisse:
Vor 5 Stunden · 1916 - Peter Debye and Paul Scherrer discovered powder (polycrystalline) diffraction. 1916 - Paul Peter Ewald predicted the Pendellösung effect, which is a foundational aspect of the dynamical diffraction theory of X rays. 1917 - Albert W. Hull independently discovered powder diffraction in researching the crystal structure of metals.
