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Joseph Zentmayer
Joseph Zentmayer (March 27, 1826 — March 28, 1888) was a German-American maker of microscopes and other optical instruments. After graduating from the gymnasium in Mannheim, he was apprenticed to a local optician. After completing his apprenticeship, he associated himself with optical establishments in Karlsruhe, Frankfort, Munich, and Hamburg. Because of his pro-democracy support of the 1848 Revolution, he immigrated to the United States when he was about twenty-two years old. After working for wages in optical workshops in Baltimore and Philadelphia, Zentmayer started in 1858 his own shop in Philadelphia at the corner of Eighth Street and Chestnut Street. During the American Civil War, he provided most of the microscopes used in the U.S. government hospitals. He was appointed a member of the Iowa Total Eclipse Expedition in 1869 and contributed to the success of the expedition by his work on the photographic apparatus. The Centennial Model is on display at the Delaware ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Philosophical Society
The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publications, source text, library resources, and community outreach. It was founded by the polymath Benjamin Franklin and is considered the first learned society founded in what became the United States.Philosophical Hall, the society's headquarters and a museum, is located just east of Independence Hall in Independence National Historical Park. In 1965, in recognition of the building's history, it was designated a National Historic Landmark. The society has about 1,000 elected members. As of April 2020, 5,710 members had been inducted since its creation. Through research grants, published journals, the American Philosophical Society Museum, an extensive library, and regular meetings, the society supports a variety of disciplines in the humanitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineers From Mannheim
Engineers, as practitioners of engineering, are professionals who invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin , the origin of the Ir. in the title of engineer in countries like Belgium, The Netherlands, and Indonesia) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of a licensed professional engineer typically include a four-year bachelor's degree in an engineering dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German-American Forty-Eighters
German Americans (, ) are Americans who have full or partial German ancestry. According to the United States Census Bureau's figures from 2022, German Americans make up roughly 41 million people in the US, which is approximately 12% of the population. This represents a decrease from the 2012 census where 50.7 million Americans identified as German. The census is conducted in a way that allows this total number to be broken down in two categories. In the 2020 census, roughly two thirds of those who identify as German also identified as having another ancestry, while one third identified as German alone. German Americans account for about one third of the total population of people of German ancestry in the world. The first significant groups of German immigrants arrived in the British colonies in the 1670s, and they settled primarily in the colonial states of Pennsylvania, New York, and Virginia. The Mississippi Company of France later transported thousands of Germans from Euro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1888 Deaths
Events January * January 3 – The great telescope (with an objective lens of diameter) at Lick Observatory in California is first used. * January 12 – The Schoolhouse Blizzard hits Dakota Territory and the states of Montana, Minnesota, Nebraska, Kansas and Texas, leaving 235 dead, many of them children on their way home from school. * January 13 – The National Geographic Society is founded in Washington, D.C. * January 19 – The Battle of the Grapevine Creek, the last major conflict of the Hatfield–McCoy feud in the Southeastern United States. * January 21 – The Amateur Athletic Union is founded by William Buckingham Curtis in the United States. * January 26 – The Lawn Tennis Association is founded in England. February * February 27 – In West Orange, New Jersey, Thomas Edison meets with Eadweard Muybridge, who proposes a scheme for sound film. March * March 8 – The Agriculture College of Utah (later Utah State University) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1826 Births
Events January–March * January 15 – The French newspaper ''Le Figaro'' begins publication in Paris, initially as a satirical weekly. * January 17 – The Ballantyne printing business in Edinburgh (Scotland) crashes, ruining novelist Sir Walter Scott as a principal investor. He undertakes to repay his creditors from his writings. His publisher, Archibald Constable, also fails. * January 18 – In India, the Siege of Bharatpur ends in British victory as Lord Combermere and Michael Childers defeat the princely state of Bharatpur, now part of the Indian state of Rajasthan. * January 30 – The Menai Suspension Bridge, built by engineer Thomas Telford as the first major suspension bridge in world history, is opened between the island of Anglesey and the mainland of Wales. * February 6 – James Fenimore Cooper's novel ''The Last of the Mohicans'' is first printed, by a publisher in Philadelphia. * February 8 – Unitarian Bernardino Rivadavia becomes the first Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franklin Institute
The Franklin Institute is a science museum and a center of science education and research in Philadelphia, Pennsylvania. It is named after the American scientist and wikt:statesman, statesman Benjamin Franklin. It houses the Benjamin Franklin National Memorial. Founded in 1824, the Franklin Institute is one of the oldest centers of science education and development in the United States. Its chief astronomer is Derrick Pitts. History 19th century On February 5, 1824, Samuel Vaughan Merrick and William H. Keating founded the Franklin Institute of the State of Pennsylvania for the Promotion of the Artes Mechanicae, Mechanic Arts. The opening was chronicled by ''The Literary Chronicle for the Year 1824'': Begun in 1825, the institute was an important force in the professionalization of American science and technology through the nineteenth century, beginning with early investigations into steam engines and water power. In addition to conducting scientific inquiry, it fostered re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elliott Cresson Medal
The Elliott Cresson Medal, also known as the Elliott Cresson Gold Medal, was the highest award given by the Franklin Institute. The award was established by Elliott Cresson, life member of the Franklin Institute, with $1,000 granted in 1848. The endowed award was to be "for a discovery in the Arts and Sciences, or for the invention or improvement of some useful machine, or for a new process or combination of materials in manufactures, or for ingenuity skill or perfection in workmanship." The medal was first awarded in 1875, 21 years after Cresson's death. The Franklin Institute continued awarding the medal on an occasional basis until 1998 when they reorganized their endowed awards under one umbrella, The Benjamin Franklin Awards. List of recipients A total of 268 Elliott Cresson Medals were given out during the award's lifetime. See also * List of engineering awards * List of physics awards References {{DEFAULTSORT:Cresson Medal Science and technology awards Frank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Media, Pennsylvania
Media is a borough (Pennsylvania), borough in and the county seat of Delaware County, Pennsylvania, United States. It is located about west of Philadelphia. It is part of the Delaware Valley, also known as the Philadelphia metropolitan area. Media was incorporated in 1850 at the same time that it was named the county seat. As of the 2020 United States census, 2020 U.S. census, the population was 5,991. History The history of the area goes back to William Penn, but the area remained predominantly rural until the 20th century. 17th century Land in the area was sold and settled soon after William Penn was named proprietor of the colonial-era Province of Pennsylvania in 1681 by King Charles II of England. Peter and William Taylor bought the land where Media is now located, directly from Penn.''Media: A Walking Tour'', published by the Borough of Media, 1990 At the time, the land was located in Chester County, Pennsylvania, Chester County. Providence Township was organized in 168 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnasium (Germany)
''Gymnasium'' (; German plural: ''Gymnasien''), in the German education system, is the most advanced and highest of the three types of German secondary schools, the others being ''Hauptschule'' (lowest) and ''Realschule'' (middle). ''Gymnasium'' strongly emphasizes academic learning, comparable to the British grammar school system or with university preparatory school, prep schools in the United States. A student attending ''Gymnasium'' is called a ''Gymnasiast'' (German plural: ''Gymnasiasten''). In 2009/10 there were 3,094 gymnasia in Germany, with students (about 28 percent of all precollegiate students during that period), resulting in an average student number of 800 students per school.Federal Statistical office of Germany, Fachserie 11, Reihe 1: Allgemeinbildende Schulen – Schuljahr 2009/2010, Wiesbaden 2010 Gymnasia are generally public, state-funded schools, but a number of parochial and private gymnasia also exist. In 2009/10, 11.1 percent of gymnasium students ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delaware County Institute Of Science
The Delaware County Institute of Science is a science and natural history museum, library and education center in Media, Pennsylvania. It was organized in 1833 and contains exhibits of mounted animals and birds; fossils, shells and corals from around the world; an herbarium; a large collection of minerals; and a reference library and lecture hall for scientific presentations. History In the summer of 1833, five friends met at the public house of Isaac Hall in Nether Providence Township, Pennsylvania, Nether Providence, Pennsylvania and proposed the development of a scientific organization to be named the "Cabinet of Natural Sciences of Delaware County". The five men were George Miller, John Miller, Minshall Painter, George Smith (Pennsylvania politician, born 1804), George Smith and the noted ornithologist John Cassin. On September 21, 1833, the group met again and created the organization under the name Delaware County Institute of Science. On January 4, 1837, George Cummings s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
