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Holger F. Struer
Holger F. Struer (22 March 1846 17 June 1931) was a Danish chemist and founder of "H. Struers Chemiske Laboratorium" (In Danish: "Struers Kemiske Laboratorium") in 1875 at Skindergade 38, the centre of Copenhagen. Struers introduced in 1943 Micropol, a new principle for electrolytic polishing which made the preparation process within metallography more controlled in order to achieve better preparation results."The History of Struers"Structure 36, Struers Journal of Materialography, 2000 p 6. Career The development of metallography was a continuous struggle to find better and easier methods to prepare metal surfaces for microstructure observation. Struers based his new principle for electrolytic polishing on Count Alois von Beckh Widmanstätten and his early experiments from the beginning of the 19th century that revealed the structure of iron from a meteor which had come down earlier in the century. He noticed that the structure could better be seen on plane, fine polished surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holger Struer, 1905
Holger may refer to: People * Holger (given name), includes name origin, plus people with the name * Hilde Holger, stage name of dancer, choreographer and dance teacher Hilde Boman-Behram (née Hilde Sofer, 1905–2001) Fictional characters * Holger Danske, a legendary Danish hero Other uses * Holger Danske (Resistance group) * Holger Danske (opera) * 9266 Holger, a main-belt asteroid * Radio Holger {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemist
A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. 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 subdisciplines of chemistry. Materials scientists and metallurgists share much of the same education and skills with chemists. The work of chemists is often related to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skindergade
Skindergade is a street in central Copenhagen, Denmark. Running roughly parallel to Strøget, to which it is connected through Jorcks Passage, it extends for approximately 400 metres from Gammeltorv to Købmagergade. History Its name dates back to the 15th century when it was a venue for leather craftsmen (''skinder-'' derives from Danish "Skind", meaning ''skin'') such as skinners, glovers, purse-, saddle- and shoemakers. Notable buildings and residents Pressens Hus at No. 5–7 is home to the Danish Media Association. It is a former commerce house from 1902, expanded with a glazed extension by Erik Korshagen in 1976. Kunstnerkollegiet is located at No. 34. N. 45-47 was built for Georg Bestle's wine trading house. The rounded pediment features a relief of Neptune and Mercury. Memorial plaque The facade of no. 44 bears a memorial stone over six named members of Holger Danske who in 1945 were arrested there by Gestapo and subsequently executed in Ryvangen Ryvangen or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copenhagen
Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 in the last quarter of 2022; and some 1.370,000 in the urban area; and the wider Copenhagen metropolitan area has 2,057,142 people. Copenhagen is on the islands of Zealand and Amager, separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road. Originally a Viking fishing village established in the 10th century in the vicinity of what is now Gammel Strand, Copenhagen became the capital of Denmark in the early 15th century. Beginning in the 17th century, it consolidated its position as a regional centre of power with its institutions, defences, and armed forces. During the Renaissance the city served as the de facto capital of the Kalmar Union, being the seat of monarchy, governing the majority of the present day Nordic region in a personal union with Sweden and Norway ruled by the Danis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metallography
Metallography is the study of the physical structure and components of metals, by using microscopy. Ceramic and polymeric materials may also be prepared using metallographic techniques, hence the terms ceramography, plastography and, collectively, materialography. Preparing metallographic specimens The surface of a metallographic specimen is prepared by various methods of grinding, polishing, and etching. After preparation, it is often analyzed using optical or electron microscopy. Using only metallographic techniques, a skilled technician can identify alloys and predict material properties. Mechanical preparation is the most common preparation method. Successively finer abrasive particles are used to remove material from the sample surface until the desired surface quality is achieved. Many different machines are available for doing this grinding and polishing, which are able to meet different demands for quality, capacity, and reproducibility. A systematic preparation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skindergade 38 By Frederik Riise
Skindergade is a street in central Copenhagen, Denmark. Running roughly parallel to Strøget, to which it is connected through Jorcks Passage, it extends for approximately 400 metres from Gammeltorv to Købmagergade. History Its name dates back to the 15th century when it was a venue for leather craftsmen (''skinder-'' derives from Danish "Skind", meaning ''skin'') such as skinners, glovers, purse-, saddle- and shoemakers. Notable buildings and residents Pressens Hus at No. 5–7 is home to the Danish Media Association. It is a former commerce house from 1902, expanded with a glazed extension by Erik Korshagen in 1976. Kunstnerkollegiet is located at No. 34. N. 45-47 was built for Georg Bestle's wine trading house. The rounded pediment features a relief of Neptune and Mercury. Memorial plaque The facade of no. 44 bears a memorial stone over six named members of Holger Danske who in 1945 were arrested there by Gestapo and subsequently executed in Ryvangen Ryvangen or R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Count Alois Von Beckh Widmanstätten
Count (feminine: countess) is a historical title of nobility in certain European countries, varying in relative status, generally of middling rank in the hierarchy of nobility. Pine, L. G. ''Titles: How the King Became His Majesty''. New York: Barnes & Noble, 1992. p. 73. . The etymologically related English term "county" denoted the territories associated with the countship. Definition The word ''count'' came into English from the French ''comte'', itself from Latin ''comes''—in its accusative ''comitem''—meaning “companion”, and later “companion of the emperor, delegate of the emperor”. The adjective form of the word is "comital". The British and Irish equivalent is an earl (whose wife is a "countess", for lack of an English term). In the late Roman Empire, the Latin title ''comes'' denoted the high rank of various courtiers and provincial officials, either military or administrative: before Anthemius became emperor in the West in 467, he was a military ''comes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Clifton Sorby
Henry Clifton Sorby (10 May 1826 – 9 March 1908) was an English microscopist and geologist. His major contribution was the development of techniques for studying iron and steel with microscopes. This paved the way for the mass production of steel. Biography Sorby was born at Woodbourne, near Sheffield in Yorkshire, and attended Sheffield Collegiate School. He early on developed an interest in natural science. One of his first papers related to the excavation of valleys in Yorkshire. In 1847, when he was 21, his father died, leaving him a comfortable private income. He immediately established a scientific laboratory and workshop at his home. He subsequently dealt with the physical geography of former geological periods, with the wave-structure in certain stratified rocks, and the origin of slaty cleavage. He took up the study of rocks and minerals under the microscope, and published an important memoir, "On the Microscopical Structure of Crystals", in 1858 (''Quart. Journ. Geol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century Danish Scientists
The 19th (nineteenth) century began on 1 January 1801 ( MDCCCI), and ended on 31 December 1900 ( MCM). The 19th century was the ninth century of the 2nd millennium. The 19th century was characterized by vast social upheaval. Slavery was abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanding beyond its British homeland for the first time during this century, particularly remaking the economies and societies of the Low Countries, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Islamic gunpowder empires fell into decline and European imperialism brought much of South Asia, Southeast Asia, and almost all of Africa under colonial rule. It was also marked by the collapse of the large S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century Danish Businesspeople
The 19th (nineteenth) century began on 1 January 1801 ( MDCCCI), and ended on 31 December 1900 ( MCM). The 19th century was the ninth century of the 2nd millennium. The 19th century was characterized by vast social upheaval. Slavery was abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanding beyond its British homeland for the first time during this century, particularly remaking the economies and societies of the Low Countries, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Islamic gunpowder empires fell into decline and European imperialism brought much of South Asia, Southeast Asia, and almost all of Africa under colonial rule. It was also marked by the collapse of the large S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
