The International Union of Crystallography ( IUCr ) is an organisation devoted to the international promotion and coordination of the science of crystallography . The IUCr is a member of the International Council for Science (ICSU) .
9-575: In 1986 the International Union of Crystallography (IUCr) established the Ewald Prize for outstanding contributions to the science of crystallography. The Ewald Prize is considered the highest prize available to crystallographers apart from the Nobel Prize . The Ewald Prize has been described as prestigious, acclaimed and coveted. The prize is named after Paul Peter Ewald for his contributions to
18-478: A focus for the relations of crystallography to other sciences. The IUCr fulfils these objectives by publishing in print and electronically primary scientific journals through the Acta Crystallographica journal series, as well as Journal of Applied Crystallography , Journal of Synchrotron Radiation , IUCrJ , the series of reference volumes International Tables for Crystallography , distributing
27-671: A year of the termination of fighting in WWII , he arranged for an international meeting of crystallographers in London which was attended by some 120 scientists from most of the allied countries. In that London meeting Ewald was elected Chairman of the Provisional International Crystallographic Committee, which put into action the decision to form the International Union of Crystallography. Sir Lawrence Bragg
36-462: The Wallpaper group with a 4 character name. First it has a P or C for primitive or centered groups. Groups are denoted by a number 1, 2, 3, 4, or 6 for the highest order of symmetry. Groups can have one or two reflections, denoted as vertical mirrors first (horizontal reflection), and horizontal second (vertical reflection). A simple reflection is denoted by an m (mirror), and a glide-reflection
45-514: The founding and leadership of the IUCr. The prize consists of a medal, a certificate and a financial award (US$ 20,000 in 1987). It is presented once every three years during the triennial International Congresses of Crystallography. The first prize was presented during the XIV Congress at Perth, Australia, in 1987. The prize is open to any scientist who has made contributions of exceptional distinction to
54-596: The quarterly IUCr Newsletter , maintaining the online World Directory/Database of Crystallographers , awarding the Ewald Prize and organising the triennial Congress and General Assembly. In 1944 the yearly meeting of the X-ray Analysis Group (XRAG) of the UK Institute of Physics was held in Oxford, and the distinguished German crystallographer Paul Peter Ewald , who then taught at Queen's University Belfast ,
63-513: The science of crystallography , irrespective of nationality, age or experience. The prize may be shared by several contributors to the same scientific achievement. International Union of Crystallography The objectives of the IUCr are to promote international cooperation in crystallography and to contribute to all aspects of crystallography, to promote international publication of crystallographic research, to facilitate standardization of methods, units, nomenclatures and symbols, and to form
72-537: Was invited to give the evening lecture. In it he gave a historical survey of some of the stages in the evolution of X-ray crystallography and ended with a strong plea for the formation of an international society or union which would represent, and unify publication for, the new science. This idea was followed up by the British crystallographers, and particularly by Sir Lawrence Bragg , the Chairman of XRAG. In June 1946, within
81-410: Was the first formally elected President of the IUCr, with Ralph Walter Graystone Wyckoff and Arne Westgren as Vice-Presidents. Ewald was elected as 5th President of the IUCr, the 'international society or union' that he had originally conceived, in 1960. The IUCr notation is the notation for the symmetry group adopted by the International Union of Crystallography in 1952. It identifies members of
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