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Ida Tacke
Ida Noddack (25 February 1896 – 24 September 1978), ''née'' Tacke, was a German chemist and physicist. In 1934 she was the first to mention the idea later named nuclear fission. With her husband Walter Noddack, and Otto Berg (scientist), Otto Berg, she discovered element 75, rhenium. She was nominated three times for the Nobel Prize in Chemistry. Background Ida Tacke was born in Lackhausen (nowadays a part of the city of Wesel) in the northern Rhine region in 1896. She described how she picked her path of study by stating, "since I did not want to be a teacher at all, and research and industry employed proportionally fewer physicists at that time, I decided to become a chemist– a decision that was welcomed by my father who owned a small varnish factory in the Lower Rhine region." She chose to attend the Technische Hochschule Charlottenburg because she was drawn to its long and demanding programs. She entered the school in 1915, six years after women were allowed to study in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Education In Chemistry
''Education in Chemistry'' (often referred to by its brand 'EiC') is a print and online magazine covering all areas of chemistry education, mainly concentrating on the teaching of chemistry in secondary schools and universities. It is published by the Royal Society of Chemistry, which also publishes '' Chemistry Education Research and Practice'', a peer-reviewed academic journal on the same topic. History The feasibility of a "British Journal of Chemistry Education" was first discussed by the Royal Society of Chemistry in late 1962 (a similar journal, the ''Journal of Chemical Education'' had been in existence in the USA since 1924). Its launch was secured by the lobbying of Professor Ronald S. Nyholm who became the first Chair of the editorial board. The magazine was launched in 1963 under the editor Dr F. W. Gibbs with the first issue published in January 1964. Gibbs' first editorial, "Scientists and Teachers", set out the aims of the publication, "This journal has been launch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Fission
Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay. Nuclear fission was discovered by chemists Otto Hahn and Fritz Strassmann and physicists Lise Meitner and Otto Robert Frisch. Hahn and Strassmann proved that a fission reaction had taken place on 19 December 1938, and Meitner and her nephew Frisch explained it theoretically in January 1939. Frisch named the process "fission" by analogy with biological fission of living cells. In their second publication on nuclear fission in February 1939, Hahn and Strassmann predicted the existence and liberation of additional neutrons during the fission process, opening up the possibility of a nuclear chain reaction. For heavy nuclides, it is an exothermic reaction which can release large amounts of energy both as electromagnetic radiat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aliphatic
In organic chemistry, hydrocarbons ( compounds composed solely of carbon and hydrogen) are divided into two classes: aromatic compounds and aliphatic compounds (; G. ''aleiphar'', fat, oil). Aliphatic compounds can be saturated (in which all the C-C bonds are single, requiring the structure to be completed, or 'saturated', by hydrogen) like hexane, or unsaturated, like hexene and hexyne. Open-chain compounds, whether straight or branched, and which contain no rings of any type, are always aliphatic. Cyclic compounds can be aliphatic if they are not aromatic. Structure Aliphatics compounds can be saturated, joined by single bonds (alkanes), or unsaturated, with double bonds ( alkenes) or triple bonds ( alkynes). If other elements ( heteroatoms) are bound to the carbon chain, the most common being oxygen, nitrogen, sulfur, and chlorine, it is no longer a hydrocarbon, and therefore no longer an aliphatic compound. However, such compounds may still be referred to as aliph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin
Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population within city limits, highest population within its city limits of any city in the European Union. The city is also one of the states of Germany, being the List of German states by area, third smallest state in the country by area. Berlin is surrounded by the state of Brandenburg, and Brandenburg's capital Potsdam is nearby. The urban area of Berlin has a population of over 4.6 million and is therefore the most populous urban area in Germany. The Berlin/Brandenburg Metropolitan Region, Berlin-Brandenburg capital region has around 6.2 million inhabitants and is Germany's second-largest metropolitan region after the Rhine-Ruhr region, as well as the List of EU metropolitan areas by GDP, fifth-biggest metropolitan region by GDP in the European Union. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Rhine Region
The Lower Rhine region or Niederrhein () is a region around the Lower Rhine section of the river Rhine in North Rhine-Westphalia, Germany, between approximately Oberhausen and Krefeld in the East and the Dutch border around Kleve in the West. As the region can be defined either geographically, linguistically, culturally, or by political, economic and traffic relations throughout the centuries, as well as by more recent political subdivisions, its precise borders are disputable and occasionally may be seen as extending beyond the Dutch border. A cultural bond of the German Lower Rhine region is its Low Franconian language, specifically the Kleverlandish dialect (German: , Dutch: ), which includes the Dutch dialects just across the border. In the region's southeastern portion Bergish is spoken. Other typicalities of the area include the predominantly Catholic background as well as the Rhenish Carnival tradition. The area basically covers the districts of Kleve, Wesel, Vierse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wesel
Wesel () is a city in North Rhine-Westphalia, in western Germany. It is the capital of the Wesel (district), Wesel district. Geography Wesel is situated at the confluence of the Lippe River and the Rhine. Division of the city Suburbs of Wesel include Lackhausen, Obrighoven, Ginderich, Feldmark, Fusternberg, Büderich, Flüren and Blumenkamp. History Origin The city originated from a Franconian manor that was first recorded in the 8th century. In the 12th century, the Duke of Clèves took possession of Wesel. The city became a member of the Hanseatic League during the 15th century. Wesel was second only to Cologne in the lower Rhine region as an entrepôt. It was an important commercial centre: a clearing station for the transshipment and trading of goods. Early modern In 1545, a Walloons, Walloon community in Wesel was noted, with French-language church services. In 1590 the Spanish captured Wesel after a four-year siege. The city changed hands between the Dutch and Spanish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nobel Prize In Chemistry
The Nobel Prize in Chemistry () is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895, awarded for outstanding contributions in chemistry, physics, literature, peace, and physiology or medicine. This award is administered by the Nobel Foundation and awarded by the Royal Swedish Academy of Sciences on proposal of the Nobel Committee for Chemistry, which consists of five members elected by the Academy. The award is presented in Stockholm at an annual ceremony on December 10th, the anniversary of Nobel's death. The first Nobel Prize in Chemistry was awarded in 1901 to Jacobus Henricus van 't Hoff, of the Netherlands, "for his discovery of the laws of chemical dynamics and osmotic pressure in solutions". From 1901 to 2024, the award has been bestowed on a total of 195 individuals. The 2024 Nobel Prize in Chemistry was awarded to Demis Hassabis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhenium
Rhenium is a chemical element; it has symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. It has one of the highest melting and boiling points of any element. It resembles manganese and technetium chemically and is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores. It shows in its compounds a wide variety of oxidation states ranging from −1 to +7. Rhenium was originally discovered in 1908 by Masataka Ogawa, but he mistakenly assigned it as element 43 (now known as technetium) rather than element 75 and named it ''nipponium''. It was rediscovered in 1925 by Walter Noddack, Ida Tacke and Otto Berg, who gave it its present name. It was named after the river Rhine in Europe, from which the earliest samples had been obtained and worked co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Berg (scientist)
Otto Berg (23 November 1874 – 1939) was a German scientist. He is one of the scientists credited with discovering rhenium, the last element to be discovered having a stable isotope. Life Berg was born in Berlin as the son of the merchant Philipp Berg and his wife Jenny. From 1894 to 1898, Berg studied chemistry in Berlin, Heidelberg Heidelberg (; ; ) is the List of cities in Baden-Württemberg by population, fifth-largest city in the States of Germany, German state of Baden-Württemberg, and with a population of about 163,000, of which roughly a quarter consists of studen ... and University of Freiburg, Freiburg; in Freiburg he worked as an assistant at the Institute of Physics. In 1900, he married Julie Zuntz, a daughter of physiologist Nathan Zuntz; the couple had four children. Between 1902 and 1911, he was a Privatdozent in University of Greifswald, Greifswald. He then became a partner at Siemens & Halske in Berlin-Charlottenburg. After the Nazi seizure of power he lost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Noddack
Walter Noddack (17 August 1893 – 7 December 1960) was a German chemist. He, Ida Tacke (who later married Noddack), and Otto Berg reported the discovery of element 43 and element 75 in 1925. Rhenium They named element 75 rhenium (Latin ''Rhenus'' meaning "Rhine"). Rhenium was the last element to be discovered having a stable isotope. The existence of a yet undiscovered element at this position in the periodic table had been predicted by Henry Moseley in 1914. In 1925 they reported that they detected the element in platinum ore and in the mineral columbite. They also found rhenium in gadolinite and molybdenite. In 1928 they were able to extract 1 g of the element by processing 660 kg of molybdenite. These achievements led to Walter and Ida being awarded the German Chemical Society's prestigious Liebig Medal in 1931. Technetium Element 43 was named masurium (after Masuria in Eastern Prussia). The group bombarded columbite with a beam of electrons and deduced element ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a graduated scientist trained in the study of chemistry, or an officially enrolled student in the field. Chemists study the composition of matter and its properties. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms. Chemists carefully measure substance proportions, chemical reaction rates, and other chemical properties. In Commonwealth English, pharmacists are often called chemists. Chemists use their knowledge to learn the composition and properties of unfamiliar substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and create new artificial substances and useful processes. Chemists may specialize in any number of Chemistry#Subdisciplines, subdisciplines of chemistry. Materials science, Materials scientists and metallurgists sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
