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- Q124142 subject Q4834.
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- Q124142 abstract "Paul Niggli (June 26, 1888 – January 13, 1953) was a Swiss crystallographer who was a leader in the field of X-ray crystallography.Niggli was born in Zofingen and studied at the Swiss Federal Institute of Technology (ETH) in Zurich and the University of Zurich, where he obtained a doctorate. His 1919 book, Geometrische Kristallographie des Diskontinuums, played a seminal role in the refinement of space group theory. In this book, Niggli demonstrated that although X-ray reflection conditions do not always uniquely determine the space group to which a crystal belongs, they do reveal a small number of possible space groups to which it could belong. Niggli used morphological methods to account for internal structure and, in his 1928 Kristallographische und Strukturtheoretische Grundbegriffe, he took up what is essentially the reverse process, the task of establishing the connection between space lattices and external crystal morphology. The great aim of his life was to integrate the whole field of Earth sciences.In 1920, Niggli became the lead scientist at the ETH's Institut für Mineralogie und Petrographie, where he brought his systematic approach to the study of crystal morphologies using X-ray diffraction. In 1935, Niggli and his doctoral student Werner Nowacki (1909–1988) determined the 73 three-dimensional arithmetic crystal classes (symmorphic space groups). Niggli retired from the Institute in 1949. He was also professor of mineralogy at the Eidgenössische Technische Hochschule and at the University of Zurich.Niggli succeeded Paul Heinrich von Groth (1843 - 1927) as editor of Zeitschrift für Kristallographie.In 1948, Niggli was awarded the Roebling Medal of the Mineralogical Society of America.The Paul Niggli Foundation awards medals to outstanding Swiss mineral scientists below the age of 35 with a strong perspective for an academic career.Dorsum Niggli on the Moon was named after him.".
- Q124142 award Q1307788.
- Q124142 award Q2607382.
- Q124142 birthDate "1888-06-26".
- Q124142 birthPlace Q63986.
- Q124142 deathDate "1953-01-13".
- Q124142 doctoralStudent Q84907.
- Q124142 field Q160398.
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- Q124142 birthDate "1888-06-26".
- Q124142 birthPlace Q63986.
- Q124142 deathDate "1953-01-13".
- Q124142 doctoralStudents Q84907.
- Q124142 field Q160398.
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- Q124142 name "Paul Niggli".
- Q124142 nationality Q39.
- Q124142 prizes "Marcel Benoist Prize".
- Q124142 prizes "Roebling Medal".
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- Q124142 comment "Paul Niggli (June 26, 1888 – January 13, 1953) was a Swiss crystallographer who was a leader in the field of X-ray crystallography.Niggli was born in Zofingen and studied at the Swiss Federal Institute of Technology (ETH) in Zurich and the University of Zurich, where he obtained a doctorate. His 1919 book, Geometrische Kristallographie des Diskontinuums, played a seminal role in the refinement of space group theory.".
- Q124142 label "Paul Niggli".
- Q124142 name "Paul Niggli".