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Henry August Rowland House
The Henry August (or Augustus) Rowland House is a historic row house at 915 Cathedral Street in Baltimore, Maryland. Built in the 1880s, this nondescript row house is historically important as the home of physicist Henry Augustus Rowland (b. 1846) from 1889-90 until his death in 1901. It was listed on the National Register of Historic Places and declared a National Historic Landmark in 1975. and Description and history The Henry August Rowland House is located on the north side of Baltimore's Mount Vernon, Baltimore, Mount Vernon neighborhood, at the northeast corner of Cathedral and Brexton Streets. It is the southern of two adjacent row houses, which are typical of brick rowhouses built in the fashionable residential area in the 1880s. It is three stories in height, built out of red brick, and topped by a flat roof with a projecting carved wooden cornice. It is three bays wide, with the entrance in the rightmost bay, sheltered by an elaborate surround toppedy a shal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltimore, Maryland
Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was designated an independent city by the Constitution of Maryland in 1851, and today is the most populous independent city in the United States. As of 2021, the population of the Baltimore metropolitan area was estimated to be 2,838,327, making it the 20th largest metropolitan area in the country. Baltimore is located about north northeast of Washington, D.C., making it a principal city in the Washington–Baltimore combined statistical area (CSA), the third-largest CSA in the nation, with a 2021 estimated population of 9,946,526. Prior to European colonization, the Baltimore region was used as hunting grounds by the Susquehannock Native Americans, who were primarily settled further northwest than where the city was later built. Colonis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetism
Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomena of electromagnetism. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves. Demagnetizing a magnet is also possible. Only a few substances are ferromagnetic; the most common ones are iron, cobalt, and nickel and their alloys. The rare-earth metals neodymium and samarium are less common examples. The prefix ' refers to iron because permanent magnetism was first observed in lodestone, a form of natural iron ore called magnetite, Fe3O4. All substances exhibit some type of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houses Completed In 1885
A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air conditioning systems.Schoenauer, Norbert (2000). ''6,000 Years of Housing'' (rev. ed.) (New York: W.W. Norton & Company). Houses use a range of different roofing systems to keep precipitation such as rain from getting into the dwelling space. Houses may have doors or locks to secure the dwelling space and protect its inhabitants and contents from burglars or other trespassers. Most conventional modern houses in Western cultures will contain one or more bedrooms and bathrooms, a kitchen or cooking area, and a living room. A house may have a separate dining room, or the eating area may be integrated into another room. Some large houses in North America have a recreation room. In traditional agriculture-oriented societies, domestic animals such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houses In Baltimore
A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air conditioning systems.Schoenauer, Norbert (2000). ''6,000 Years of Housing'' (rev. ed.) (New York: W.W. Norton & Company). Houses use a range of different roofing systems to keep precipitation such as rain from getting into the dwelling space. Houses may have doors or lock (security device), locks to secure the dwelling space and protect its inhabitants and contents from burglars or other trespassers. Most conventional modern houses in Western cultures will contain one or more bedrooms and bathrooms, a kitchen or cooking area, and a living room. A house may have a separate dining room, or the eating area may be integrated into another room. Some large houses in North America have a recreation room. In traditional agriculture-oriented societies, Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Historic Landmarks In Maryland
This is a List of National Historic Landmarks in Maryland. There are currently 76 National Historic Landmarks (NHLs) in Maryland. Also included are short lists of former NHLs and of other historic sites of national importance administered by the National Park Service.. Current NHLs The NHLs are distributed over 17 of Maryland's 23 counties and its one county-equivalent, the independent city of Baltimore. For consistency, places are listed by their National Historic Landmark program names. Historic areas of the NPS in Maryland National Historical Parks, some National Monuments, and certain other areas listed in the National Park system are historic landmarks of national importance that are highly protected already, often before the inauguration of the NHL program in 1960, and are then often not also named NHLs ''per se''. The National Park Service lists these together with the NHLs in the state.These ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places Listings In Central Baltimore
This is a list of National Register of Historic Places properties and districts in downtown Baltimore, Maryland, United States. Many other properties are located in other parts of the city; for these, see National Register of Historic Places listings in Baltimore, Maryland. The locations of the National Register properties and districts listed below (at least for all showing latitude and longitude coordinates below) may be seen in a map by clicking on "Map of all coordinates". Much of the central portion of the city and significant portions of the waterfront and city park system are included in the federally designated Baltimore National Heritage Area. Current listings Former listings See also *National Register of Historic Places listings in Maryland References {{National Register of Historic Places in Maryland History of Baltimore Central Central is an adjecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of National Historic Landmarks In Maryland
This is a List of National Historic Landmarks in Maryland. There are currently 76 National Historic Landmarks (NHLs) in Maryland. Also included are short lists of former NHLs and of other historic sites of national importance administered by the National Park Service.. Current NHLs The NHLs are distributed over 17 of List of counties in Maryland, Maryland's 23 counties and its one county-equivalent, the independent city of Baltimore. For consistency, places are listed by their National Historic Landmark program names. Historic areas of the NPS in Maryland National Historical Parks, some National Monuments, and certain other List of areas in the United States National Park System, areas listed in the National Park system are historic landmarks of national importance that are highly protected already, often before the inauguration of the NHL program in 1960, and are then often not also named NHLs ''per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isaac Asimov
yi, יצחק אזימאװ , birth_date = , birth_place = Petrovichi, Russian SFSR , spouse = , relatives = , children = 2 , death_date = , death_place = Manhattan, New York City, U.S. , nationality = Russian (1920–1922)Soviet (1922–1928)American (1928–1992) , occupation = Writer, professor of biochemistry , years_active = 1939–1992 , genre = Science fiction (hard SF, social SF), mystery, popular science , subject = Popular science, science textbooks, essays, history, literary criticism , education = Columbia University ( BA, MA, PhD) , movement = Golden Age of Science Fiction , module = , signature = Isaac Asimov signature.svg Isaac Asimov ( ; 1920 – April 6, 1992) was an American writer and professor of biochemistry at Boston University. During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. Heinlein and Arthur C. Clarke. A prolific writer, he wrote or edited more than 500 books ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diffraction Grating
In optics, a diffraction grating is an optical component with a periodic structure that diffracts light into several beams travelling in different directions (i.e., different diffraction angles). The emerging coloration is a form of structural coloration. The directions or diffraction angles of these beams depend on the wave (light) incident angle to the diffraction grating, the spacing or distance between adjacent diffracting elements (e.g., parallel slits for a transmission grating) on the grating, and the wavelength of the incident light. The grating acts as a dispersive element. Because of this, diffraction gratings are commonly used in monochromators and spectrometers, but other applications are also possible such as optical encoders for high precision motion control and wavefront measurement. For typical applications, a reflective grating has ridges or ''rulings'' on its surface while a transmissive grating has transmissive or hollow slits on its surface. Such a grating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johns Hopkins University
Johns Hopkins University (Johns Hopkins, Hopkins, or JHU) is a private university, private research university in Baltimore, Maryland. Founded in 1876, Johns Hopkins is the oldest research university in the United States and in the western hemisphere. It consistently ranks among the most prestigious universities in the United States and the world. The university was named for its first benefactor, the American entrepreneur and Quaker philanthropist Johns Hopkins. Hopkins' $7 million bequest to establish the university was the largest Philanthropy, philanthropic gift in U.S. history up to that time. Daniel Coit Gilman, who was inaugurated as :Presidents of Johns Hopkins University, Johns Hopkins's first president on February 22, 1876, led the university to revolutionize higher education in the U.S. by integrating teaching and research. In 1900, Johns Hopkins became a founding member of the American Association of Universities. The university has led all Higher education in the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Row House
In architecture and city planning, a terrace or terraced house (British English, UK) or townhouse (American English, US) is a form of medium-density housing that originated in Europe in the 16th century, whereby a row of attached dwellings party wall, share side walls. In the United States and Canada they are also known as row houses or row homes, found in older cities such as Philadelphia, Baltimore, and Toronto. Terrace housing can be found throughout the world, though it is in abundance in Europe and Latin America, and extensive examples can be found in the United Kingdom, United States, Canada, and Australia. The Place des Vosges in Paris (1605–1612) is one of the early examples of the style. Sometimes associated with the working class, historical and reproduction terraces have increasingly become part of the process of gentrification in certain inner-city areas. Origins and nomenclature Though earlier Gothic Architecture, Gothic ecclesiastical examples, such as Vicars' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Coit Gilman
Daniel Coit Gilman (; July 6, 1831 – October 13, 1908) was an American educator and academic. Gilman was instrumental in founding the Sheffield Scientific School at Yale College, and subsequently served as the second president of the University of California, Berkeley, as the first president of Johns Hopkins University, and as founding president of the Carnegie Institution. Eponymous halls at both Berkeley and Hopkins pay tribute to his service. He was also co-founder of the Russell Trust Association, which administers the business affairs of Yale's Skull and Bones society. Gilman served for twenty five years as president of Johns Hopkins; his inauguration in 1876 has been said to mark "the starting point of postgraduate education in the U.S." Biography Early years Born in Norwich, Connecticut, the son of Eliza (''née'' Coit) and mill owner William Charles Gilman, a descendant of Edward Gilman, one of the first settlers of Exeter, New Hampshire, of Thomas Dudley, Governor of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
