|
Jan Ketelaar
Jan Arnold Albert Ketelaar (21 April 1908, Amsterdam 23 November 2001, Lochem) was a Dutch chemist and author of the textbook ''Chemical Constitution: an Introduction to the Theory of the Chemical Bond'' (). Van Arkel–Ketelaar triangles are named after him. Ketelaar's doctoral students included Sol Kimel and Robert de Levie. He was elected a member of the Royal Netherlands Academy of Arts and Sciences The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed ... in 1958. References 1908 births 2001 deaths 20th-century Dutch chemists Members of the Royal Netherlands Academy of Arts and Sciences Scientists from Amsterdam {{Netherlands-scientist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amsterdam
Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population of 907,976 within the city proper, 1,558,755 in the City Region of Amsterdam, urban area and 2,480,394 in the Amsterdam metropolitan area, metropolitan area. Located in the Provinces of the Netherlands, Dutch province of North Holland, Amsterdam is colloquially referred to as the "Venice of the North", for its large number of canals, now designated a World Heritage Site, UNESCO World Heritage Site. Amsterdam was founded at the mouth of the Amstel River that was dammed to control flooding; the city's name derives from the Amstel dam. Originally a small fishing village in the late 12th century, Amsterdam became a major world port during the Dutch Golden Age of the 17th century, when the Netherlands was an economic powerhouse. Amsterdam is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lochem
Lochem () is a city and municipality in the province of Gelderland in the Eastern Netherlands. In 2005, it merged with the municipality of Gorssel, retaining the name of Lochem. As of 2019, it had a population of 33,590. Population centres The city of Lochem is the municipality's main population centre. The hamlet of Barchem and Laren were already comprised in the municipality of Lochem before 2005. Formerly in the municipality of Gorssel, Almen, Eefde (immediately north of Zutphen), Epse and Gorssel itself became part of the municipality of Lochem, as well as the hamlet of Harfsen. City of Lochem Lochem, east of Zutphen, received city rights in 1233. ''Mijn Gelderland''. Retrieved on 14 April 2017. Until the 17th century, it was often besieged and burnt down. After 1700, it became a small market town for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Van Arkel–Ketelaar Triangle
Bond triangles or Van Arkel–Ketelaar triangles (named after Anton Eduard van Arkel and J. A. A. Ketelaar) are triangles used for showing different compounds in varying degrees of ionic, metallic and covalent bonding. History In 1941 Van Arkel recognised three extreme materials and associated bonding types. Using 36 main group elements, such as metals, metalloids and non-metals, he placed ionic, metallic and covalent bonds on the corners of an equilateral triangle, as well as suggested intermediate species. The bond triangle shows that chemical bonds are not just particular bonds of a specific type. Rather, bond types are interconnected and different compounds have varying degrees of different bonding character (for example, covalent bonds with significant ionic character are called polar covalent bonds). Six years later, in 1947, Ketelaar developed van Arkel's idea by adding more compounds and placing bonds on different sides of the triangle. Many people developed the tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sol Kimel
Salo "Sol" Kimel ( he, סול קימל; 7 October 1928 – 14 August 2021) was an Israeli chemical physicist. He was a professor at Technion – Israel Institute of Technology and performed research into biomedical applications of lasers. Biography Kimel was born on 7 October 1928 in Berlin, Brandenburg, Prussia, Germany. During his childhood in Amsterdam, the Netherlands, he was friends with Anne Frank. In 1942, his mother was taken in a Nazi razzia. Kimel subsequently went into hiding on a farm. In early 1945 the farm was raided by Nazi authorities and Kimel was sent to Westerbork transit camp where he remained until the liberation of the camp on 12 April 1945. In 1960 he obtained his PhD in physics from the University of Amsterdam under professor Jan Ketelaar with a thesis titled: "Optical dispersion of gases in the infrared region : the dispersion through the first overtone band of HCI". Kimel was elected a corresponding member of the Royal Netherlands Academy of Arts and Sci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert De Levie
Robert de Levie (born 1933) is a Dutch chemist. He was a professor of analytical chemistry and electrochemistry at Georgetown University. De Levie was born in Amsterdam. He obtained his PhD in chemistry at the University of Amsterdam under professor Jan Ketelaar in 1963 with a thesis titled: "On porous electrodes in electrolyte solutions". Afterwards he was a postdoc at Louisiana State University for two years. De Levie then moved to Georgetown University where would work in teaching capacity for the next 34 years, including as professor of analytical and electrochemistry. De Levie was elected a corresponding member of the Royal Netherlands Academy of Arts and Sciences The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed ... in 1980. References 1933 births Living people 20th-cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Netherlands Academy Of Arts And Sciences
The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed in the Trippenhuis in Amsterdam. In addition to various advisory and administrative functions it operates a number of research institutes and awards many prizes, including the Lorentz Medal in theoretical physics, the Dr Hendrik Muller Prize for Behavioural and Social Science and the Heineken Prizes. Main functions The academy advises the Dutch government on scientific matters. While its advice often pertains to genuine scientific concerns, it also counsels the government on such topics as policy on careers for researchers or the Netherlands' contribution to major international projects. The academy offers solicited and unsolicited advice to parliament, ministries, universities and research institutes, funding agencies and internatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1908 Births
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album '' 63/19'' by Kool A.D. * '' Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album ''Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2001 Deaths
This is a list of deaths of notable people, organised by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked here. 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 See also * Lists of deaths by day * Deaths by year {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Members Of The Royal Netherlands Academy Of Arts And Sciences
The Royal Netherlands Academy of Arts and Sciences ( Dutch: ''Koninklijke Nederlandse Akademie van Wetenschappen'', abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed in the Trippenhuis in Amsterdam. Founded in 1808, members are appointed for life by co-optation. Lists of members sorted alphabetically * Members of the Royal Netherlands Academy of Arts and Sciences (A) * Members of the Royal Netherlands Academy of Arts and Sciences (B) * Members of the Royal Netherlands Academy of Arts and Sciences (C) * Members of the Royal Netherlands Academy of Arts and Sciences (D) * Members of the Royal Netherlands Academy of Arts and Sciences (E) * Members of the Royal Netherlands Academy of Arts and Sciences (F) * Members of the Royal Netherlands Academy of Arts and Sciences (G) * Members of the Royal Netherlands Academy of Arts and Sciences (H) * Members of the Royal Netherlands Academy of Arts and Sciences (I) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Amsterdam")
