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Shoji Nishikawa
Shōji Nishikawa (Japanese: 西川 正治, ''Nishikawa Shōji'', 5 December 1884 – 5 January 1952) was a Japanese physicist and a founding father of crystallography in Japan. Education and career Nishikawa was born in 1884 in Hachiōji, Tokyo Prefecture, as the son of an important silk dealer. He grew up in Tokyo and later studied at the Faculty of Science at the Imperial University of Tokyo (now University of Tokyo). His PhD in physics was supervised by Suekichi Kinoshita, with an initial focus on radioactivity. During this time, Nishikawa was inspired by Torahiko Terada to turn his interest turned to crystallography, which was experiencing a worldwide boom with the then new method of X-ray diffraction for structural analysis. The first publications of Nishikawa came out between 1913 and 1915, at a time when the British Nobel Prize winners in physics William Henry Bragg and William Lawrence Bragg were doing groundbreaking pioneering work in this field. Between 1916 and 1919, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystallography
Crystallography is the branch of science devoted to the study of molecular and crystalline structure and properties. The word ''crystallography'' is derived from the Ancient Greek word (; "clear ice, rock-crystal"), and (; "to write"). In July 2012, the United Nations recognised the importance of the science of crystallography by proclaiming 2014 the International Year of Crystallography.UN announcement "International Year of Crystallography" iycr2014.org. 12 July 2012 Crystallography is a broad topic, and many of its subareas, such as X-ray crystallography, are themselves important scientific topics. Crystallography ranges from the fundamentals of crystal structure to the mathematics of Crystal system, crystal geometry, including those that are Aperiodic crystal, not periodic or quasi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Structure Determination
In crystallography, crystal structure is a description of ordered arrangement of atoms, ions, or molecules in a crystalline material. Ordered structures occur from intrinsic nature of constituent particles to form symmetric patterns that repeat along the principal directions of three-dimensional space in matter. The smallest group of particles in a material that constitutes this repeating pattern is the unit cell of the structure. The unit cell completely reflects the symmetry and structure of the entire crystal, which is built up by repetitive translation of the unit cell along its principal axes. The translation vectors define the nodes of the Bravais lattice. The lengths of principal axes/edges, of the unit cell and angles between them are lattice constants, also called ''lattice parameters'' or ''cell parameters''. The symmetry properties of a crystal are described by the concept of space groups. All possible symmetric arrangements of particles in three-dimensional space may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1952 Deaths
Events January–February * January 26 – Cairo Fire, Black Saturday in Kingdom of Egypt, Egypt: Rioters burn Cairo's central business district, targeting British and upper-class Egyptian businesses. * February 6 ** Princess Elizabeth, Duchess of Edinburgh, becomes monarch of the United Kingdom of Great Britain and Northern Ireland and the British Dominions: Canada, Australia, New Zealand, Union of South Africa, South Africa, Dominion of Pakistan, Pakistan and Dominion of Ceylon, Ceylon. The princess, who is on a visit to Kenya when she hears of the death of her father, King George VI, aged 56, takes the regnal name Elizabeth II. ** In the United States, a Artificial heart, mechanical heart is used for the first time in a human patient. *February 7 – New York City announces its first crosswalk devices to be installed. * February 14–February 25, 25 – The 1952 Winter Olympics, Winter Olympics are held in Oslo, Norway. * February 15 – The State Funeral of King Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1884 Births
Events January * January 4 – The Fabian Society is founded in London to promote gradualist social progress. * January 5 – Gilbert and Sullivan's comic opera '' Princess Ida'', a satire on feminism, premières at the Savoy Theatre, London. * January 7 – German microbiologist Robert Koch isolates '' Vibrio cholerae'', the cholera bacillus, working in India. * January 18 – William Price attempts to cremate his dead baby son, Iesu Grist, in Wales. Later tried and acquitted on the grounds that cremation is not contrary to English law, he is thus able to carry out the ceremony (the first in the United Kingdom in modern times) on March 14, setting a legal precedent. * January – Arthur Conan Doyle's anonymous story " J. Habakuk Jephson's Statement" appears in the ''Cornhill Magazine'' (London). Based on the disappearance of the crew of the '' Mary Celeste'' in 1872, many of the fictional elements introduced by Doyle come to replace the real event ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apoplexy
Apoplexy () refers to the rupture of an internal organ and the associated symptoms. Informally or metaphorically, the term ''apoplexy'' is associated with being furious, especially as "apoplectic". Historically, it described what is now known as a hemorrhagic stroke, typically involving a ruptured blood vessel in the brain; modern medicine typically specifies the anatomical location of the bleeding, such as cerebral apoplexy, ovarian apoplexy, or pituitary apoplexy. Historical meaning From the late 14th to the late 19th century, the diagnosis ''apoplexy'' referred to any sudden death that began with abrupt loss of consciousness, especially when the victim died within seconds after losing consciousness. The word ''apoplexy'' was sometimes used to refer to the symptom of sudden loss of consciousness immediately preceding death. Strokes, ruptured aortic aneurysms, and even heart attacks were referred to as apoplexy in the past, because before the advent of biomedical scienc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hiroshima University
is a Japanese national research university located in Higashihiroshima and Hiroshima, Japan. Established in 1929, it was chartered as a university in 1949 following the merge of a number of national educational institutions. Its abbreviated form is Hirodai. History Under the National School Establishment Law, Hiroshima University was established on May 31, 1949. After World War II, the school system in Japan was entirely reformed and each of the institutions of higher education under the pre-war system was reorganized. As a general rule, one national university was established in each prefecture, and Hiroshima University became a national university under the new system by combining the pre-war higher educational institutions in Hiroshima Prefecture. The following eight schools were integrated or merged into Hiroshima University under the new system of education. * Hiroshima University of Literature and Science * Hiroshima Higher Normal School * Hiroshima Women's Higher Norm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The High Energy Accelerator Research Organization
, known as KEK, is a Japanese organization whose purpose is to operate the largest particle physics laboratory in Japan, situated in Tsukuba, Ibaraki prefecture. It was established in 1997. The term "KEK" is also used to refer to the laboratory itself, which employs approximately 695 employees. KEK's main function is to provide the particle accelerators and other infrastructure needed for high-energy physics, material science, structural biology, radiation science, computing science, nuclear transmutation and so on. Numerous experiments have been constructed at KEK by the internal and international collaborations that have made use of them. Makoto Kobayashi, emeritus professor at KEK, is known globally for his work on CP-violation, and was awarded the 2008 Nobel Prize in Physics. History KEK was established in 1997 in a reorganization of the Institute of Nuclear Study, the University of Tokyo (established in 1955), the National Laboratory for High Energy Physics (established i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
