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Denison Olmstead
Denison Olmsted (June 18, 1791 – May 13, 1859) was an American physicist and astronomer. Professor Olmsted is credited with giving birth to meteor science after the 1833 Leonid meteor shower over North America spurred him to study this phenomenon. Biography Olmsted was born June 18, 1791, in East Hartford, Connecticut. In 1813, he graduated from Yale College, where he acted as college tutor from 1815 to 1817. In the latter year, he was appointed to the chair of chemistry, mineralogy and geology in the University of North Carolina at Chapel Hill. A gold rush in North Carolina spurred the state legislature to sponsor the first state geological survey that was ever attempted in the United States. Olmsted traveled by horseback across the state collecting minerals and fossils, publishing his geological map in 1825. In 1825, he became professor of mathematics and natural philosophy at Yale. He published an elaborate theory of hail-stones in 1830, which caused much discussion, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Hartford, Connecticut
East Hartford is a New England town, town in Hartford County, Connecticut, United States. The population was 51,045 at the 2020 United States Census, 2020 census. The town is located on the east bank of the Connecticut River, directly across from Hartford, Connecticut, Hartford. It is home to aerospace manufacturer Pratt & Whitney. It is also home to Pratt & Whitney Stadium at Rentschler Field, a stadium used mainly for soccer and football with a capacity of 40,000 people. History When the Connecticut Valley became known to Europeans around 1631, it was inhabited by what were known as the River Tribes—a number of small clans of Native Americans living along the Great River and its tributaries. Of these tribes the Podunk people, Podunks occupied territory now lying in the towns of East Hartford and South Windsor, Connecticut, South Windsor, and numbered, by differing estimates, from sixty to two hundred bowmen. They were governed by two sachems, Waginacut and Arramamet, and were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorologist
A meteorologist is a scientist who studies and works in the field of meteorology aiming to understand or predict Earth's atmosphere of Earth, atmospheric phenomena including the weather. Those who study meteorological phenomena are meteorologists in research, while those using mathematical models and knowledge to prepare daily weather forecasts are called ''weather forecasters'' or ''operational meteorologists''. Meteorologists work in Government agency, government agencies, private consulting and research services, industrial enterprises, utilities, radio and television stations, and in education. They are not to be confused with weather presenters, who present the weather forecast in the media and range in training from journalists having just minimal training in meteorology to full-fledged meteorologists. Description Meteorologists study the Earth's atmosphere and its interactions with the Earth's surface, the oceans and the biosphere. Their knowledge of applied mathematics and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotton Gin
A cotton gin—meaning "cotton engine"—is a machine that quickly and easily separates cotton fibers from their seeds, enabling much greater productivity than manual cotton separation.. Reprinted by McGraw-Hill, New York and London, 1926 (); and by Lindsay Publications, Inc., Bradley, Illinois, (). The separated seeds may be used to grow more cotton or to produce cottonseed oil. Handheld roller gins had been used in the Indian subcontinent since at earliest 500 and then in other regions. The Indian worm gear, worm-gear roller gin was invented sometime around the 16th century and has, according to Lakwete, remained virtually unchanged up to the present time. A modern mechanical cotton gin was created by English-American inventor Eli Whitney in 1793 and patented in 1794. Whitney's gin used a combination of a wire screen and small wire hooks to pull the cotton through, while brushes continuously removed the loose cotton lint to prevent jams. It revolutionized the cotton indus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Journal Of Science
The ''American Journal of Science'' (''AJS'') is the United States of America's longest-running scientific journal, having been published continuously since its conception in 1818 by Professor Benjamin Silliman, who edited and financed it himself. It was initially called the ''American Journal of Science and Arts'' until a name change in 1880, but its focus was always on natural sciences and especially on geology and related subjects. In early years, the journal was often referred to as "Silliman's Journal", and the publication became associated with Yale University due to his long tenure there (1804–1853). The editorship long remained in the family of Professor Silliman, as he was assisted by his son, Benjamin Silliman Jr., from 1838. On the death of the elder Silliman in 1864, he was succeeded as chief editor by his son-in-law, James Dwight Dana, and then from 1895 till 1926 by Dana's son Edward Salisbury Dana. Associate editors included the botanist Asa Gray and the zoologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eli Whitney
Eli Whitney Jr. (December 8, 1765January 8, 1825) was an American inventor, widely known for inventing the cotton gin in 1793, one of the key inventions of the Industrial Revolution that shaped the economy of the Antebellum South. Whitney's invention made upland short cotton into a profitable crop, which strengthened the economic foundation of slavery in the United States and prolonged the institution. Despite the social and economic impact of his invention, Whitney lost much of his profits in legal battles over patent infringement for the cotton gin. Thereafter, he turned his attention to securing contracts with the government in the manufacture of muskets for the newly formed United States Army. He continued making arms and inventing until his death in 1825. Early life and education Whitney was born in Westborough, Massachusetts, on December 8, 1765, the eldest child of Eli Whitney Sr., a prosperous farmer, and his wife Elizabeth Fay, also of Westborough. The younger Eli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ebenezer Porter Mason
Ebenezer may refer to: Bible * Eben-Ezer, a place mentioned in the Books of Samuel People * Ebenezer (given name), a male given name * Ebenezer Scrooge, fictional character in ''A Christmas Carol'' Places Australia * Ebenezer, New South Wales * Ebenezer, Queensland, a locality in the City of Ipswich * Ebenezer, South Australia Canada * Ebenezer, Prince Edward Island, a historic place in Queens County, Prince Edward Island * Ebenezer, Saskatchewan United States * Ebenezer, Georgia * Ebenezer, Muhlenberg County, Kentucky * Ebenezer, Mississippi * Ebenezer, Missouri * Ebenezer, New York * Ebenezer, Ohio * Ebenezer, Pennsylvania * Ebenezer, Camp County, Texas * Ebenezer, Jasper County, Texas * Ebenezer, Virginia * Ebenezer, Wisconsin Other uses * ''Ebenezer'' (film), a 1997 Canadian television film * ''Ebenezer'' (hymn), a Welsh tune to which many hymns are set See also * Ebenezer Church (other) * Ebenezer Colonies, New York * Ebenhaeser, South Africa * New Ebe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurora (astronomy)
An aurora ( aurorae or auroras), also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in Earth's sky, predominantly observed in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of radiant lights that appear as curtains, rays, spirals or dynamic flickers covering the entire sky. Auroras are the result of disturbances in the Earth's magnetosphere caused by enhanced speeds of solar wind from coronal holes and coronal mass ejections. These disturbances alter the trajectories of charged particles in the magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere ( thermosphere/exosphere). The resulting ionization and excitation of atmospheric constituents emit light of varying color and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of accelera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hail
Hail is a form of solid Precipitation (meteorology), precipitation. It is distinct from ice pellets (American English "sleet"), though the two are often confused. It consists of balls or irregular lumps of ice, each of which is called a hailstone. Ice pellets generally fall in cold weather, while hail growth is greatly inhibited during low surface temperatures. Unlike other forms of ice, water ice precipitation, such as graupel (which is made of rime ice), ice pellets (which are smaller and Transparency and translucency, translucent), and snow (which consists of tiny, delicately crystalline flakes or needles), hailstones usually measure between and in diameter. The METAR reporting code for hail or greater is GR, while smaller hailstones and graupel are coded GS. Hail is possible during most thunderstorms (as it is produced by cumulonimbus), as well as within of the parent storm. Hail formation requires environments of strong, upward motion of air within the parent thunderst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appletons' Olmsted Denison
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Appleton's or Appletons may refer to several publications published by D. Appleton & Company, New York, including: *''Appletons' Journal'' (1869–1881) *''Appletons' Cyclopædia of American Biography'' (1887–1889) *''Appleton's Magazine'' (1905–1909) *Appletons' travel guides See also *Appleton (surname) Appleton is an Anglo-Saxon Toponymic surname, locational surname. It is borne by: People * Alistair Appleton (born 1970), British television presenter * Charles Appleton (academic) (1841–1879), Oxford don and scholarly entrepreneur * Charles Ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurora Borealis
An aurora ( aurorae or auroras), also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in Earth's sky, predominantly observed in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of radiant lights that appear as curtains, rays, spirals or dynamic flickers covering the entire sky. Auroras are the result of disturbances in the Earth's magnetosphere caused by enhanced speeds of solar wind from coronal holes and coronal mass ejections. These disturbances alter the trajectories of charged particles in the magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere ( thermosphere/exosphere). The resulting ionization and excitation of atmospheric constituents emit light of varying color and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of accelera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temple University
Temple University (Temple or TU) is a public university, public Commonwealth System of Higher Education, state-related research university in Philadelphia, Philadelphia, Pennsylvania, United States. It was founded in 1884 by the Baptist minister Russell Conwell and his congregation at the Grace Baptist Church of Philadelphia, then called Baptist Temple. Today, Temple is the List of colleges and universities in Pennsylvania, second-largest university in Pennsylvania by enrollment and awarded 9,128 degrees in the 2023–24 academic year. It has a worldwide alumni base of 378,012, with 352,175 alumni residing in the United States. The university consists of 17 schools and colleges, including five professional schools, offering over 640+ academic programs and over 160 undergraduate majors. about 30,005 undergraduate, graduate and professional students were enrolled at the university. It is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
