Daily Archives: January 12, 2018


Paul Niggli
January 13 marks the passing of Paul Niggli. Niggli was a Swiss mineralogist who was a pioneer of x-ray crystallography. Niggli developed the mathematical system of space groups that defined 230 different 3-D atom arrangements based on x-ray diffraction patterns. X-ray crystallography works by shining x-ray radiation through a crystal […]

Today in Science History – January 13 – Paul Niggli ...   Recently updated !