|
Dwight Smith Young
Dwight Smith Young (22 October 1892 – 24 December 1975) was an American "carpenter, photographer, archaeologist, cook, meteorologist, poet and self-made physicist" who took part in the Manhattan Project. He was given the nickname "The Hermit of Pajarito Canyon" after making his home in an old log cabin in a remote canyon on the Los Alamos testing site from roughly 1946 to 1952. Early life Young was born in Elgin, Illinois, raised in Oswego, Illinois, and attended East Aurora High School in Aurora, Illinois. After graduating from high school in 1910, Young worked as a carpenter with his father, Lou C. Young, taking photographs of their construction projects and providing a photographic record of such things as barn-building techniques of the early 20th century. After two years of carpentry, Young took up photography full time, eventually working with a photographer named Henry Morris in Galveston, Texas in 1915. It was during this tenure that he had the occasion to photograph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elgin, Illinois
Elgin ( ) is a city in Cook and Kane counties in the northern part of the U.S. state of Illinois. Elgin is located northwest of Chicago, along the Fox River. As of the 2020 Census, the city had a population of 114,797, the seventh-largest city in Illinois. History The Indian Removal Act of 1830 and the Black Hawk Indian War of 1832 led to the expulsion of the Native Americans who had settlements and burial mounds in the area and set the stage for the founding of Elgin. Thousands of militiamen and soldiers of Gen. Winfield Scott's army marched through the Fox River valley during the war, and accounts of the area's fertile soils and flowing springs soon filtered east. In New York, James T. Gifford and his brother Hezekiah Gifford heard tales of this area ripe for settlement, and they traveled west. Looking for a site on the stagecoach route from Chicago to Galena, Illinois, they eventually settled on a spot where the Fox River could be bridged. In April 1835, they e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prompt Criticality
In nuclear engineering, prompt criticality describes a nuclear fission event in which criticality (the threshold for an exponentially growing nuclear fission chain reaction) is achieved with prompt neutrons alone (neutrons that are released immediately in a fission reaction) and does not rely on delayed neutrons (neutrons released in the subsequent decay of fission fragments). As a result, prompt supercriticality causes a much more rapid growth in the rate of energy release than other forms of criticality. Nuclear weapons are based on prompt criticality, while nuclear reactors rely on delayed neutrons or external neutrons to achieve criticality. Criticality An assembly is critical if each fission event causes, on average, exactly one additional such event in a continual chain. Such a chain is a self-sustaining fission chain reaction. When a uranium-235 (U-235) atom undergoes nuclear fission, it typically releases between one and seven neutrons (with an average of 2.4). In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Personnel From Illinois
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct military uniform. It may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of the military is usually defined as defence of the state and its interests against external armed threats. In broad usage, the terms ''armed forces'' and ''military'' are often treated as synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include both its military and other paramilitary forces. There are various forms of irregular military forces, not belonging to a recognized state; though they share many attributes with regular military forces, they are less often referred to as simply ''military''. A nation's military may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project People
Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state of New York. Located near the southern tip of New York State, Manhattan is based in the Eastern Time Zone and constitutes both the geographical and demographic center of the Northeast megalopolis and the urban core of the New York metropolitan area, the largest metropolitan area in the world by urban landmass. Over 58 million people live within 250 miles of Manhattan, which serves as New York City’s economic and administrative center, cultural identifier, and the city’s historical birthplace. Manhattan has been described as the cultural, financial, media, and entertainment capital of the world, is considered a safe haven for global real estate investors, and hosts the United Nations headquarters. New York City is the headquarters of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1975 Deaths
It was also declared the ''International Women's Year'' by the United Nations and the European Architectural Heritage Year by the Council of Europe. Events January * January 1 - Watergate scandal (United States): John N. Mitchell, H. R. Haldeman and John Ehrlichman are found guilty of the Watergate cover-up. * January 2 ** The Federal Rules of Evidence are approved by the United States Congress. ** Bangladesh revolutionary leader Siraj Sikder is killed by police while in custody. ** A bomb blast at Samastipur, Bihar, India, fatally wounds Lalit Narayan Mishra, Minister of Railways. * January 5 – Tasman Bridge disaster: The Tasman Bridge in Hobart, Tasmania, Australia, is struck by the bulk ore carrier , killing 12 people. * January 7 – OPEC agrees to raise crude oil prices by 10%. * January 10–February 9 – The flight of ''Soyuz 17'' with the crew of Georgy Grechko and Aleksei Gubarev aboard the ''Salyut 4'' space station. * January 15 – Alvor Agreement: Portuga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1892 Births
Year 189 ( CLXXXIX) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Silanus and Silanus (or, less frequently, year 942 ''Ab urbe condita''). The denomination 189 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Plague (possibly smallpox) kills as many as 2,000 people per day in Rome. Farmers are unable to harvest their crops, and food shortages bring riots in the city. China * Liu Bian succeeds Emperor Ling, as Chinese emperor of the Han Dynasty. * Dong Zhuo has Liu Bian deposed, and installs Emperor Xian as emperor. * Two thousand eunuchs in the palace are slaughtered in a violent purge in Luoyang, the capital of Han. By topic Arts and sciences * Galen publishes his ''"Treatise on the various temperaments"'' (aka ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsirege
Tsirege (also Tshirege) is a classic Ancestral Puebloan archaeological site located north of Pajarito Road (now closed to the public) about one mile west of White Rock, New Mexico on property owned by Los Alamos National Laboratory. Tsirege consists of approximately 800 rooms, was occupied from c. 1325 to c. 1600, and is regarded by the people of San Ildefonso Pueblo as ancestral. The name means "bird place" in the Tewa language. The site includes a long defensive wall, 10 kivas, a reservoir, and many significant petroglyph panels. Tours of the site are rarely offered (twice per decade on average). See also *Bandelier National Monument *Tsankawi *Puye Cliff Dwellings The Puye Cliff Dwellings are the ruins of an abandoned pueblo, located in Santa Clara Canyon on Santa Clara Pueblo land near Española, New Mexico. The site was declared a National Historic Landmark in 1966. Ancient pueblo dwellings Between 900 ... References A Plan for the Management of the Cultural Heritage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrochronology
Dendrochronology (or tree-ring dating) is the scientific method of dating tree rings (also called growth rings) to the exact year they were formed. As well as dating them, this can give data for dendroclimatology, the study of climate and atmospheric conditions during different periods in history from wood. Dendrochronology derives from Ancient Greek (), meaning "tree", (), meaning "time", and (), "the study of". Dendrochronology is useful for determining the precise age of samples, especially those that are too recent for radiocarbon dating, which always produces a range rather than an exact date. However, for a precise date of the death of the tree a full sample to the edge is needed, which most trimmed timber will not provide. It also gives data on the timing of events and rates of change in the environment (most prominently climate) and also in wood found in archaeology or works of art and architecture, such as old panel paintings. It is also used as a check in radiocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uncle Tom's Cabin
''Uncle Tom's Cabin; or, Life Among the Lowly'' is an anti-slavery novel by American author Harriet Beecher Stowe. Published in two volumes in 1852, the novel had a profound effect on attitudes toward African Americans and slavery in the U.S., and is said to have "helped lay the groundwork for the mericanCivil War". Stowe, a Connecticut-born woman of English descent, was part of the religious Beecher family and an active abolitionist. She wrote the sentimental novel to depict the reality of slavery while also asserting that Christian love could overcome slavery. The novel focuses on the character of Uncle Tom, a long-suffering black slave around whom the stories of the other characters revolve. In the United States, ''Uncle Tom's Cabin'' was the best-selling novel and the second best-selling book of the 19th century, following the Bible. It is credited with helping fuel the abolitionist cause in the 1850s. The influence attributed to the book was so great that a likely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harriet Beecher Stowe
Harriet Elisabeth Beecher Stowe (; June 14, 1811 – July 1, 1896) was an American author and abolitionist. She came from the religious Beecher family and became best known for her novel ''Uncle Tom's Cabin'' (1852), which depicts the harsh conditions experienced by enslaved African Americans. The book reached an audience of millions as a novel and play, and became influential in the United States and in Great Britain, energizing anti-slavery forces in the American North, while provoking widespread anger in the South. Stowe wrote 30 books, including novels, three travel memoirs, and collections of articles and letters. She was influential both for her writings and for her public stances and debates on social issues of the day. Life and work Harriet Elisabeth Beecher was born in Litchfield, Connecticut on June 14, 1811.McFarland, Philip. ''Loves of Harriet Beecher Stowe''. New York: Grove Press, 2007: 112. She was the sixth of 11 children born to outspoken Calvinist preache ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
