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Crystallography On Stamps
The depiction of crystallography on stamps began in 1939 with the issue of a Free City of Danzig, Danzig stamp commemorating Wilhelm Röntgen who discovered X-rays. Crystallographic stamps contribute to crystallography education and to the public understanding of science. Crystallography on stamps was promoted as part of the International Year of Crystallography in 2014. Scope A crystallography stamp has one or more of the following characteristics: * It depicts a Crystallography, crystallographer, or a polymath who did significant work in the crystallography field * It depicts a crystallographic concept, such as quasicrystals, or a crystallographic object, such as a crystal prepared for X-ray diffraction * It depicts a crystallographic symbol or formula such as Bragg's law * It commemorates a crystallographic event, such as an international congress, or an international year in the crystallographic field The following types of material are excluded (although they may also be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revenue Stamp
A revenue stamp, tax stamp, duty stamp or fiscal stamp is a (usually) adhesive label used to designate collected taxes or fees on documents, tobacco, alcoholic drinks, drugs and medicines, playing cards, hunting licenses, firearm registration, and many other things. Typically, businesses purchase the stamps from the government (thereby paying the tax), and attach them to taxed items as part of putting the items on sale, or in the case of documents, as part of filling out the form. Revenue stamps often look very similar to postage stamps, and in some countries and time periods it has been possible to use postage stamps for revenue purposes, and vice versa. Some countries also issued dual-purpose postage and revenue stamps. Description Revenue stamps are stamps used to designate collected taxes and fees. They are issued by governments, national and local, and by official bodies of various kinds. They take many forms and may be gummed and ungummed, perforated or imperforate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Deisenhofer
Johann Deisenhofer (; born September 30, 1943) is a German biochemist who, along with Hartmut Michel and Robert Huber, received the Nobel Prize for Chemistry in 1988 for their determination of the first crystal structure of an integral membrane protein, a membrane-bound complex of proteins and co-factors that is essential to photosynthesis. Early life and education Born in Bavaria, Deisenhofer earned his doctorate from the Technical University of Munich for research work done at the Max Planck Institute of Biochemistry in Martinsried, West Germany, in 1974. He conducted research there until 1988, when he joined the scientific staff of the Howard Hughes Medical Institute and the faculty of the Department of Biochemistry at The University of Texas Southwestern Medical Center at Dallas. Career Together with Michel and Huber, Deisenhofer determined the three-dimensional structure of a protein complex found in certain photosynthetic bacteria. This membrane protein complex, called a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Debye
Peter Joseph William Debye ( ; born Petrus Josephus Wilhelmus Debije, ; March 24, 1884 – November 2, 1966) was a Dutch-American physicist and physical chemist, and Nobel laureate in Chemistry. Biography Early life Born in Maastricht, Netherlands, Debye enrolled in the Aachen University of Technology in 1901. In 1905, he completed his first degree in electrical engineering. He published his first paper, a mathematically elegant solution of a problem involving eddy currents, in 1907. At Aachen, he studied under the theoretical physicist Arnold Sommerfeld, who later claimed that his most important discovery was Peter Debye. In 1906, Sommerfeld received an appointment at Munich, Bavaria, and took Debye with him as his assistant. Debye got his Ph.D. with a dissertation on radiation pressure in 1908. In 1910, he derived the Planck radiation formula using a method which Max Planck agreed was simpler than his own. In 1911, when Albert Einstein took an appointment as a profes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinton Davisson
Clinton Joseph Davisson (October 22, 1881 – February 1, 1958) was an American physicist who shared the 1937 Nobel Prize in Physics with George Paget Thomson "for their experimental discovery of the diffraction of electrons by crystals". Early life and education Davisson was born in Bloomington, Illinois on October 22, 1881. He graduated from Bloomington High School in 1902, and entered the University of Chicago on scholarship. Upon the recommendation of Robert A. Millikan, in 1905 Davisson was hired by Princeton University as Instructor of Physics. He completed the requirements for his B.S. degree from Chicago in 1908, mainly by working in the summers. While teaching at Princeton, he did doctoral thesis research with Owen Richardson. He received his Ph.D. in physics from Princeton in 1911; in the same year he married Richardson's sister, Charlotte. Scientific career After earning his Ph.D., Davisson was appointed as an assistant professor at the Carnegie Institute of T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Curl
Robert Floyd Curl Jr. (August 23, 1933 – July 3, 2022) was an American chemist who was Pitzer–Schlumberger Professor of Natural Sciences and professor of chemistry at Rice University. He was awarded the Nobel Prize in Chemistry in 1996 for the discovery of the nanomaterial buckminsterfullerene, and hence the fullerene class of materials, along with Richard Smalley (also of Rice University) and Harold Kroto of the University of Sussex. Early life and education Born in Alice, Texas, United States, Curl was the son of a Methodist minister. Due to his father's missionary work, his family moved several times within southern and southwestern Texas, and the elder Curl was involved in starting the San Antonio Medical Center's Methodist Hospital. Curl attributes his interest in chemistry to a chemistry set he received as a nine-year-old, recalling that he ruined the finish on his mother's porcelain stove when nitric acid boiled over onto it. He is a graduate of Thomas Jeffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Crick
Francis Harry Compton Crick (8 June 1916 – 28 July 2004) was an English molecular biologist, biophysicist, and neuroscientist. He, James Watson, Rosalind Franklin, and Maurice Wilkins played crucial roles in deciphering the Nucleic acid double helix, helical structure of the DNA molecule. Crick and Watson's paper in ''Nature (journal), Nature'' in 1953 laid the groundwork for understanding DNA structure and functions. Together with Maurice Wilkins, they were jointly awarded the 1962 Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular geometry, molecular structure of nucleic acids and its significance for information transfer in living material". Crick was an important theoretical molecular biologist and played a crucial role in research related to revealing the helical structure of DNA. He is widely known for the use of the term "central dogma" to summarise the idea that once information is transferred from nucleic acids (DNA or RNA) to prot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emmanuelle Charpentier
Emmanuelle Marie Charpentier (; born 11 December 1968) is a French professor and researcher in microbiology, genetics, and biochemistry. As of 2015, she has been a director at the Max Planck Institute for Infection Biology in Berlin. In 2018, she founded an independent research institute, the Max Planck Unit for the Science of Pathogens. In 2020, Charpentier and American biochemist Jennifer Doudna of the University of California, Berkeley, were awarded the Nobel Prize in Chemistry "for the development of a method for genome editing" (through CRISPR gene editing, CRISPR). This was the first science Nobel Prize ever won by two women only. Early life and education Charpentier's paternal grandfather, surnamed Sinanian, was an Armenians, Armenian who escaped to France during the Armenian Genocide and met his wife in Marseille. She was born in 1968 in Juvisy-sur-Orge in France and studied biochemistry, microbiology, and genetics at the Pierre and Marie Curie University (which became ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Charpak
Georges Charpak (; born Jerzy Charpak; 1 August 1924 – 29 September 2010) was a Polish-born French physicist who received the Nobel Prize in Physics in 1992 for his invention of the multiwire proportional chamber. Life Georges Charpak was born on 1 August 1924 as Jerzy Charpak to Jewish parents, Anna (Szapiro) and Maurice Charpak, in the village of Dąbrowica in Poland (now Dubrovytsia in Ukraine). Charpak's family moved from Poland to Paris when he was seven years old, beginning his study of mathematics in 1941 at the Lycée Saint-Louis.CERN The actor and film director André Charpak was his younger brother. During World War II Charpak served in the resistance and was imprisoned by Vichy authorities in 1943. In 1944 he was deported to the Nazi concentration camp at Dachau, where he remained until the camp was liberated in 1945. After '' classes préparatoires'' studies at Lycée Saint-Louis in Paris and later at Lycée Joffre in Montpellier, he joined in 1945 the Paris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Henry Bragg
Sir William Henry Bragg (2 July 1862 – 12 March 1942) was an English physicist and X-ray crystallographer who uniquelyThis is still a unique accomplishment, because no other parent-child combination has yet shared a Nobel Prize (in any field). In several cases, a parent has won a Nobel Prize, and then years later, the child has won the Nobel Prize for separate research. An example of this is with Marie Curie and her daughter Irène Joliot-Curie, who are the only mother-daughter pair. Several father-son pairs have won two separate Nobel Prizes. shared a Nobel Prize with his son Lawrence Bragg – the 1915 Nobel Prize in Physics: "for their services in the analysis of crystal structure by means of X-rays". Biography Early years Bragg was born at Westward, near Wigton, Cumberland, England, the son of Robert John Bragg, a merchant marine officer and farmer, and his wife Mary née Wood, a clergyman's daughter. When Bragg was seven years old, his mother died, and he was rais ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Bragg
Sir William Lawrence Bragg (31 March 1890 – 1 July 1971) was an Australian-born British physicist who shared the 1915 Nobel Prize in Physics with his father William Henry Bragg "for their services in the analysis of crystal structure by means of X-rays", an important step in the development of X-ray crystallography. As of 2024, he is the youngest ever List of Nobel laureates, Nobel laureate in physics, or in any science category, having received the award at the age of 25. Bragg was the director of the Cavendish Laboratory, Cambridge, when James D. Watson and Francis Crick reported the discovery of the structure of DNA in February 1953. Education and early life Bragg was born in Adelaide, South Australia to William Henry Bragg (1862–1942), Thomas Elder, Elder Professor of Mathematics and Physics at the University of Adelaide, and Gwendoline (1869–1929), daughter of Charles Todd (pioneer), Charles Todd, government astronomer of South Australia. In 1900, Bragg was a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul D
Paul may refer to: People * Paul (given name), a given name, including a list of people * Paul (surname), a list of people * Paul the Apostle, an apostle who wrote many of the books of the New Testament * Ray Hildebrand, half of the singing duo Paul & Paula * Paul Stookey, one-third of the folk music trio Peter, Paul and Mary * Billy Paul, stage name of American soul singer Paul Williams (1934–2016) * Vinnie Paul, drummer for American Metal band Pantera * Paul Avril, pseudonym of Édouard-Henri Avril (1849–1928), French painter and commercial artist * Paul, pen name under which Walter Scott wrote ''Paul's letters to his Kinsfolk'' in 1816 * Jean Paul Jean Paul (; born Johann Paul Friedrich Richter, 21 March 1763 – 14 November 1825) was a German Romanticism, German Romantic writer, best known for his humorous novels and stories. Life and work Jean Paul was born at Wunsiedel, in the Ficht ..., pen name of Johann Paul Friedrich Richter (1763–1825), German Romantic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
