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Theodore Hall
Theodore Alvin Hall (October 20, 1925 – November 1, 1999) was an American physicist and an atomic spy for the Soviet Union, who, during his work on United States efforts to develop the first and second atomic bombs during World War II (the Manhattan Project), gave a detailed description of the "Fat Man" plutonium bomb, and of several processes for purifying plutonium, to Soviet intelligence. His brother, Edward N. Hall, was a rocket scientist who led the US Air Force's program to develop an intercontinental ballistic missile, personally designing the Minuteman missile and convincing the Pentagon and President Eisenhower to adopt it as a key part of the nation's strategic nuclear triad. Early life Theodore Alvin Holtzberg was born in Far Rockaway, New York City to a devout Jewish couple, Barnett Holtzberg and Rose Moskowitz. His father was a furrier who had emigrated to America to escape antisemitic pogroms in the Russian Empire. His mother was a second-generation Russ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Y
The Los Alamos Laboratory, also known as Project Y, was a secret laboratory established by the Manhattan Project and operated by the University of California during World War II. Its mission was to design and build the first atomic bombs. Robert Oppenheimer was its first director, serving from 1943 to December 1945, when he was succeeded by Norris Bradbury. In order to enable scientists to freely discuss their work while preserving security, the laboratory was located in a remote part of New Mexico. The wartime laboratory occupied buildings that had once been part of the Los Alamos Ranch School. The development effort initially concentrated on a gun-type fission weapon using plutonium called Thin Man. In April 1944, the Los Alamos Laboratory determined that the rate of spontaneous fission in plutonium bred in a nuclear reactor was too great due to the presence of plutonium-240 and would cause a predetonation, a nuclear chain reaction before the core was fully assembled. Oppe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far Rockaway, Queens
Far Rockaway is a neighborhood on the eastern part of the Rockaway peninsula in the New York City borough of Queens. It is the easternmost section of the Rockaways. The neighborhood extends from Beach 32nd Street east to the Nassau County line. Its southern boundary is the Atlantic Ocean; it is one of the neighborhoods along Rockaway Beach. Far Rockaway is located in Queens Community District 14 and its ZIP Code is 11691. It is patrolled by the New York City Police Department's 101st Precinct. History The indigenous inhabitants of the Rockaways were the Canarsie Indians, a band of Mohegan, whose name was associated with the geography. By 1639, the Mohegan tribe sold most of the Rockaways to the Dutch West India Company. In 1664, the English defeated the Dutch colony and took over their lands in present-day New York.See New Amsterdam In 1685, the band chief, ''Tackapoucha'', and the English governor of the province agreed to sell the Rockaways to a Captain Palmer for 31 pou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Hasbrouck Van Vleck
John Hasbrouck Van Vleck (March 13, 1899 – October 27, 1980) was an American physicist and mathematician. He was co-awarded the Nobel Prize in Physics in 1977, for his contributions to the understanding of the behavior of electronic magnetism in solids. Education and early life Van Vleck was born to mathematician Edward Burr Van Vleck and Hester L. Raymond in Middletown, Connecticut, while his father was an assistant professor at Wesleyan University, and where his grandfather, astronomer John Monroe Van Vleck, was also a professor. He grew up in Madison, Wisconsin, and received an A.B. degree from the University of Wisconsin in 1920, before earning his Ph.D at Harvard University in 1922 under the supervision of Edwin C. Kemble. Career and research He joined the University of Minnesota as an assistant professor in 1923, then moved to the University of Wisconsin before settling at Harvard. He also earned '' Honorary D. Sc.'', or ''D. Honoris Causa'', degree from Wesleyan Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Implosion Nuclear Weapon
Nuclear weapon designs are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types: * pure fission weapons, the simplest and least technically demanding, were the first nuclear weapons built and have so far been the only type ever used in warfare (by the United States on Japan during WWII). * boosted fission weapons increase yield beyond that of the implosion design by using small quantities of fusion fuel to enhance the fission chain reaction. Boosting can more than double the weapon's fission energy yield. * staged thermonuclear weapons are essentially arrangements of two or more "stages", most usually two. The first stage is normally a boosted fission weapon as above (except for the earliest thermonuclear weapons, which used a pure fission weapon instead). Its detonation causes it to shine intensely with x-radiation, which illuminates and implodes the second stage filled wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Alamos Aerial View
LOS, or Los, or LoS may refer to: Science and technology * Length of stay, the duration of a single episode of hospitalisation * Level of service, a measure used by traffic engineers * Level of significance, a measure of statistical significance * Line-of-sight (other) * LineageOS, a free and open-source operating system for smartphones and tablet computers * Loss of signal ** Fading **End of pass (spaceflight) * Loss of significance, undesirable effect in calculations using floating-point arithmetic Medicine and biology * Lipooligosaccharide, a bacterial lipopolysaccharide with a low-molecular-weight * Lower oesophageal sphincter Arts and entertainment * ''The Land of Stories'', a series of children's novels by Chris Colfer * Los, or the Crimson King, a character in Stephen King's novels * Los (band), a British indie rock band from 2008 to 2011 * Los (Blake), a character in William Blake's poetry * Los (rapper) (born 1982), stage name of American rapper Carlos Col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queens College, City University Of New York
Queens College (QC) is a public college in the Queens Boroughs of New York City, borough of New York City. It is part of the City University of New York system. Its 80-acre campus is primarily located in Flushing, Queens. It has a student body representing more than 170 countries. Queens College was established in 1937 and offers undergraduate degrees in over 70 majors, graduate studies in over 100 degree programs and certificates, over 40 accelerated master's options, 20 doctoral degrees through the CUNY Graduate Center, and a number of advanced certificate programs. Alumni and faculty of the school, such as Arturo O'Farrill and Jerry Seinfeld, have received over 100 Grammy Award nominations. The college is organized into seven schools: Aaron Copland School of Music, Graduate School of Library and Information Studies, School of Arts & Humanities, School of Earth and Environmental Sciences, School of Education, School of Math and Natural Sciences, and School of Social Scienc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Townsend Harris High School
Townsend Harris High School at Queens College (THHS) is a public magnet high school for the humanities in the borough of Queens in New York City. Students and alumni often refer to themselves as "Harrisites." Townsend Harris consistently ranks as among the top 100 high schools in the United States. In 2019, 2020, and 2021, '' U.S. News & World Report'' ranked THHS #1 in New York State; THHS ranked #12 nationally in 2021. The school was named in honor of Townsend Harris the 19th-century American merchant, politician, and diplomat who served as the first American Consul to Japan. History Townsend Harris High School was founded in 1984 by alumni of Townsend Harris Hall Prep School, who wanted to reopen their school that was closed in the 1940s. This process in started in 1980. The first principal was Malcolm Largmann, a former high school English teacher with a strong belief in a classically styled education who also handpicked the school's original faculty. Largmann served as pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Manhattan
Upper Manhattan is the most northern region of the New York City borough of Manhattan. Its southern boundary has been variously defined, but some of the most common usages are 96th Street, the northern boundary of Central Park ( 110th Street), 125th Street, or 155th Street. The term Uptown can refer to Upper Manhattan, but is often used more generally for neighborhoods above 59th Street; in the broader definition, Uptown encompasses Upper Manhattan. Upper Manhattan is generally taken to include the neighborhoods of Marble Hill, Inwood, Washington Heights (including Fort George, Sherman Creek and Hudson Heights), Harlem (including Sugar Hill, Hamilton Heights and Manhattanville), East Harlem, Morningside Heights, and Manhattan Valley (in the Upper West Side). The George Washington Bridge connects Washington Heights in Upper Manhattan across the Hudson River to Fort Lee, New Jersey, and is the world's busiest motor vehicle bridge. In the late 19th century, the IRT Ninth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington Heights, Manhattan
Washington Heights is a neighborhood in the uppermost part of the New York City borough of Manhattan. It is named for Fort Washington, a fortification constructed at the highest natural point on Manhattan by Continental Army troops to defend the area from the British forces during the American Revolutionary War. Washington Heights is bordered by Inwood to the north along Dyckman Street, by Harlem to the south along 155th Street, by the Harlem River and Coogan's Bluff to the east, and by the Hudson River to the west. Washington Heights, which before the 20th century was sparsely populated by luxurious mansions and single-family homes, rapidly developed during the early 1900s as it became connected to the rest of Manhattan via the A, C, and 1 subway lines. Beginning as a middle-class neighborhood with many Irish and Eastern European immigrants, the neighborhood has at various points been home to communities of German Jews, Greek Americans, Puerto Ricans, Cuban Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Depression
The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagion began around September and led to the Wall Street stock market crash of October 24 (Black Thursday). It was the longest, deepest, and most widespread depression of the 20th century. Between 1929 and 1932, worldwide gross domestic product (GDP) fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession. Some economies started to recover by the mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II. Devastating effects were seen in both rich and poor countries with falling personal income, prices, tax revenues, and profits. International trade fell by more than 50%, unemployment in the U.S. rose to 23% and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsardom Of Russia
The Tsardom of Russia or Tsardom of Rus' also externally referenced as the Tsardom of Muscovy, was the centralized Russian state from the assumption of the title of Tsar by Ivan IV in 1547 until the foundation of the Russian Empire by Peter I in 1721. From 1551 to 1700, Russia grew by 35,000 km2 per year. The period includes the upheavals of the transition from the Rurik to the Romanov dynasties, wars with the Polish–Lithuanian Commonwealth, Sweden and the Ottoman Empire, and the Russian conquest of Siberia, to the reign of Peter the Great, who took power in 1689 and transformed the Tsardom into the Russian Empire. During the Great Northern War, he implemented substantial reforms and proclaimed the Russian Empire after victory over Sweden in 1721. Name While the oldest endonyms of the Grand Duchy of Moscow used in its documents were "Rus'" () and the "Russian land" (), a new form of its name, ''Rusia'' or ''Russia'', appeared and became common in the 15th century. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pogrom
A pogrom () is a violent riot incited with the aim of massacring or expelling an ethnic or religious group, particularly Jews. The term entered the English language from Russian to describe 19th- and 20th-century attacks on Jews in the Russian Empire (mostly within the Pale of Settlement). Similar attacks against Jews which also occurred at other times and places retrospectively became known as pogroms. Sometimes the word is used to describe publicly sanctioned purgative attacks against non-Jewish groups. The characteristics of a pogrom vary widely, depending on the specific incident, at times leading to, or culminating in, massacres. Significant pogroms in the Russian Empire included the Odessa pogroms, Warsaw pogrom (1881), Kishinev pogrom (1903), Kiev pogrom (1905), and Białystok pogrom (1906). After the collapse of the Russian Empire in 1917, several pogroms occurred amidst the power struggles in Eastern Europe, including the Lwów pogrom (1918) and Kiev Pogroms (1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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