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Chicora, Pennsylvania
Chicora is a borough in Butler County, Pennsylvania, United States. The population was 1,043 at the 2010 census. Geography Chicora is located at (40.949468, -79.742631), along the upper reaches of Buffalo Creek. Pennsylvania Route 68 passes through the borough, leading east to East Brady on the Allegheny River and southwest to Butler, the county seat. According to the United States Census Bureau, Chicora has a total area of , all land. Demographics At the 2000 census there were 1,021 people, 419 households, and 287 families living in the borough. The population density was 1,841.9 people per square mile (716.7/km²). There were 463 housing units at an average density of 835.3 per square mile (325.0/km²). The racial makeup of the borough was 99.51% White, 0.20% African American and 0.29% Native American. There were 419 households, 30.8% had children under the age of 18 living with them, 56.3% were married couples living together, 8.6% had a female householder with no hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borough (Pennsylvania)
In the U.S. Commonwealth of Pennsylvania, a borough (sometimes spelled boro) is a self-governing municipal entity, equivalent to a town in most jurisdictions, usually smaller than a city, but with a similar population density in its residential areas. Sometimes thought of as "junior cities", boroughs generally have fewer powers and responsibilities than full-fledged cities. Description All municipalities in Pennsylvania are classified as either cities, boroughs, or townships. The only exception is the town of Bloomsburg, recognized by the state government as the only incorporated town in Pennsylvania. Boroughs tend to have more developed business districts and concentrations of public and commercial office buildings, including court houses. Boroughs are larger, less spacious, and more developed than the relatively rural townships, which often have the greater territory and even surround boroughs of a related or even the same name. There are 956 boroughs and 56 cities in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Race And Ethnicity In The United States Census
Race and ethnicity in the United States census, defined by the federal Office of Management and Budget (OMB) and the United States Census Bureau, are the self-identified categories of race or races and ethnicity chosen by residents, with which they most closely identify, and indicate whether they are of Hispanic or Latino origin (the only categories for ethnicity). The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and, "generally reflect a social definition of race recognized in this country." OMB defines the concept of race as outlined for the U.S. census as not "scientific or anthropological" and takes into account "social and cultural characteristics as well as ancestry", using "appropriate scientific methodologies" that are not "primarily biological or genetic in reference." The race categories include both racial and national-origin groups. Race and ethnicity are considered separate and distin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Populated Places Established In 1830
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analysing, compiling, and publishing data regarding a population. Perspectives of various disciplines Social sciences In sociology and population geography, population refers to a group of human beings with some predefined criterion in common, such as location, race, ethnicity, nationality, or religion. Demography is a social science which entails the statistical study of populations. Ecology In ecology, a population is a group of organisms of the same species who inhabit the same particular geographical area and are capable of interbreeding. The area of a sexual population is the area where inter-breeding is possible between any pair within the area and more probable than cross-breeding with ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania behind Philadelphia, and the List of United States cities by population, 68th-largest city in the U.S. with a population of 302,971 as of the 2020 United States census, 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the Pennsylvania metropolitan areas, second-largest in Pennsylvania, and the List of metropolitan statistical areas, 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pitts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halifax Explosion
On the morning of 6 December 1917, the French cargo ship collided with the Norwegian vessel in the waters of Halifax, Nova Scotia, Canada. The ''Mont-Blanc'', laden with high explosives, caught fire and exploded, devastating the Richmond district of Halifax. 1,782 people were killed, largely in Halifax and Dartmouth, by the blast, debris, fires, or collapsed buildings, and an estimated 9,000 others were injured. The blast was the largest human-made explosion at the time, releasing the equivalent energy of roughly . ''Mont-Blanc'' was under orders from the French government to carry her cargo from New York City via Halifax to Bordeaux, France. At roughly 8:45 am, she collided at low speed, approximately one knot (), with the unladen ''Imo'', chartered by the Commission for Relief in Belgium to pick up a cargo of relief supplies in New York. On the ''Mont-Blanc'', the impact damaged benzol barrels stored on deck, leaking vapours which were ignited by sparks from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winfield Township, Butler County, Pennsylvania
Winfield Township is a township in Butler County, Pennsylvania, United States. The population was 3,535 at the 2010 census. Geography Winfield Township is located in southeastern Butler County, along the Armstrong County line. It includes the unincorporated communities of Cabot, Lernerville, Marwood, West Winfield, and Dennys Mills. According to the United States Census Bureau, the township has a total area of , all land. Demographics As of the census of 2000, there were 3,585 people, 1,335 households, and 1,010 families residing in the township. The population density was 146.8 people per square mile (56.7/km2). There were 1,381 housing units at an average density of 56.6/sq mi (21.8/km2). The racial makeup of the township was 99.08% White, 0.17% African American, 0.17% Native American, 0.08% Asian, 0.03% Pacific Islander, 0.17% from other races, and 0.31% from two or more races. Hispanic or Latino of any race were 0.28% of the population. There were 1,335 househol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gunpowder Magazine
A gunpowder magazine is a magazine (building) designed to store the explosive gunpowder in wooden barrels for safety. Gunpowder, until superseded, was a universal explosive used in the military and for civil engineering: both applications required storage magazines. Most magazines were purely functional and tended to be in remote and secure locations. They are the successor to the earlier powder towers and powder houses. In Australia Historic magazines were at the following locations, among others: *Jack's Magazine, Saltwater River, Victoria * Goat Island, Sydney *Spectacle Island (Port Jackson) *North Arm Powder Magazine *Dry Creek explosives depot In Canada There are magazines at: *Citadel Hill (Fort George) *Citadel of Quebec, Quebec City, Quebec *Parc de l'Esplanade, Quebec City, QuebecCole Island Esquimalt, British Columbia *Fort Lennox, Île-aux-Noix, Quebec *Fort William Historical Park, Thunder Bay, Ontario *Fort York, Toronto In Ireland Ballincollig, County Cork ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Institution
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. Called "the nation's attic" for its eclectic holdings of 154 million items, the institution's 19 museums, 21 libraries, nine research centers, and zoo include historical and architectural landmarks, mostly located in the District of Columbia. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 45 states,States without Smithsonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Museum Of Natural History
The Carnegie Museum of Natural History (abbreviated as CMNH) is a natural history museum in the Oakland neighborhood of Pittsburgh, Pennsylvania. It was founded by Pittsburgh-based industrialist Andrew Carnegie in 1896. Housing some 22 million specimens, the museum features one of the finest paleontological collections in the world. Description and history The museum consists of organized into 20 galleries as well as research, library, and office space. It holds some 22 million specimens, of which about 10,000 are on view at any given time and about 1 million are cataloged in online databases. In 2008 it hosted 386,300 admissions and 63,000 school group visits. Museum education staff also actively engage in outreach by traveling to schools all around western Pennsylvania. The museum gained prominence in 1899 when its scientists unearthed the fossils of ''Diplodocus carnegii''. Notable dinosaur specimens include one of the world's very few fossils of a juvenile ''Apatosauru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrite
A chondrite is a stony (non-metallic) meteorite that has not been modified, by either melting or differentiation of the parent body. They are formed when various types of dust and small grains in the early Solar System accreted to form primitive asteroids. Some such bodies that are captured in the planet's gravity well become the most common type of meteorite by (whether quickly, or after many orbits) arriving on a trajectory toward the planet's surface. Estimates for their contribution to the total meteorite population vary between 85.7% and 86.2%. Their study provides important clues for understanding the origin and age of the Solar System, the synthesis of organic compounds, the origin of life and the presence of water on Earth. One of their characteristics is the presence of chondrules (from the Ancient Greek χόνδρος ''chondros'', grain), which are round grains formed as molten, or partially molten droplets, in the space by distinct minerals, that normally consti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypersthene
Hypersthene is a common rock-forming inosilicate mineral belonging to the group of orthorhombic pyroxenes. Its chemical formula is . It is found in igneous and some metamorphic rocks as well as in stony and iron meteorites. Many references have formally abandoned this term, preferring to categorise this mineral as enstatite or ferrosilite. It forms a solid solution series with the minerals enstatite and ferrosilite, being a mid-way member between the two. Pure enstatite contains no iron, while pure ferrosilite contains no magnesium; hypersthene is the name given to the mineral when a significant amount of both elements are present. Enstatite is stable at atmospheric pressure, but ferrosilite is stable only at elevated pressure, decomposing into quartz and fayalite at atmospheric pressure unless stabilized by magnesium or other impurities. Distinctly developed crystals are rare, the mineral being usually found as foliated masses embedded in the igneous rocks norite and hypersthen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivine
The mineral olivine () is a magnesium iron silicate with the chemical formula . It is a type of nesosilicate or orthosilicate. The primary component of the Earth's upper mantle, it is a common mineral in Earth's subsurface, but weathers quickly on the surface. For this reason, olivine has been proposed as a good candidate for accelerated weathering to sequester carbon dioxide from the Earth's oceans and atmosphere, as part of climate change mitigation. Olivine also has many other historical uses, such as the gemstone peridot (or chrysolite), as well as industrial applications like metalworking processes. The ratio of magnesium to iron varies between the two endmembers of the solid solution series: forsterite (Mg-endmember: ) and fayalite (Fe-endmember: ). Compositions of olivine are commonly expressed as molar percentages of forsterite (Fo) and fayalite (Fa) (''e.g.'', Fo70Fa30). Forsterite's melting temperature is unusually high at atmospheric pressure, almost , while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
