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Critical Mass (Pohl And Kornbluth Short Story)
"Critical Mass" is a science fiction novelette by American writers Frederik Pohl and Cyril M. Kornbluth. It was first published in '' Galaxy Science Fiction'' magazine in February 1962, almost four years after Kornbluth's death. According to a foreword by Pohl in a collection also called ''Critical Mass'', the story was assembled from notes Kornbluth made for three story ideas, plus one of Pohl's own from 1954. After Kornbluth's death, his widow turned over his story notes and drafts to Pohl. Pohl completed a dozen or so stories based on this material, most of which were eventually collected in the volume "The Wonder Effect" which contained most of the same stories as the later "Critical Mass" collection. Arthur C. Clarke also wrote a short story with this title. It is included in his collection ''Tales from the White Hart''. Plot introduction The story takes place in 1998. The Cold War has continued for about 50 years. America is in a state of constant readiness for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederik Pohl
Frederik George Pohl Jr. (; November 26, 1919 – September 2, 2013) was an American science-fiction writer, editor, and fan, with a career spanning nearly 75 years—from his first published work, the 1937 poem "Elegy to a Dead Satellite: Luna", to the 2011 novel ''All the Lives He Led''. From about 1959 until 1969, Pohl edited '' Galaxy'' and its sister magazine '' If''; the latter won three successive annual Hugo Awards as the year's best professional magazine. His 1977 novel '' Gateway'' won four "year's best novel" awards: the Hugo voted by convention participants, the Locus voted by magazine subscribers, the Nebula voted by American science-fiction writers, and the juried academic John W. Campbell Memorial Award. He won the Campbell Memorial Award again for the 1984 collection of novellas ''The Years of the City'', one of two repeat winners during the first 40 years. For his 1979 novel ''Jem'', Pohl won a U.S. National Book Award in the one-year category Science ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-emptive Nuclear Strike
In nuclear strategy, a first strike or preemptive strike is a preemptive surprise attack employing overwhelming force. First strike capability is a country's ability to defeat another nuclear power by destroying its arsenal to the point where the attacking country can survive the weakened retaliation while the opposing side is left unable to continue war. The preferred methodology is to attack the opponent's strategic nuclear weapon facilities (missile silos, submarine bases, bomber airfields), command and control sites, and storage depots first. The strategy is called counterforce. Overview During the Cold War period, both superpowers, NATO and the Eastern Bloc, built massive nuclear arsenals, aimed, to a large extent, at each other. However, they were never used, as after a time, leaders on both sides of the Iron Curtain realized that global thermonuclear war would not be in either power's interest, as it would probably lead to the destruction of both sides, and possibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold J
Arnold may refer to: People * Arnold (given name), a masculine given name * Arnold (surname), a German and English surname Places Australia * Arnold, Victoria, a small town in the Australian state of Victoria Canada * Arnold, Nova Scotia United Kingdom * Arnold, East Riding of Yorkshire * Arnold, Nottinghamshire United States * Arnold, California, in Calaveras County * Arnold, Carroll County, Illinois * Arnold, Morgan County, Illinois * Arnold, Iowa * Arnold, Kansas * Arnold, Maryland * Arnold, Mendocino County, California * Arnold, Michigan * Arnold, Minnesota * Arnold, Missouri * Arnold, Nebraska * Arnold, Ohio * Arnold, Pennsylvania * Arnold, Texas * Arnold, Brooke County, West Virginia * Arnold, Lewis County, West Virginia * Arnold, Wisconsin * Arnold Arboretum of Harvard University, Massachusetts * Arnold Township, Custer County, Nebraska Other uses * Arnold (automobile), a short-lived English car * Arnold of Manchester, a former English coachbuilder * Arnold (band), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Point
The United States Military Academy (USMA), also known Metonymy, metonymically as West Point or simply as Army, is a United States service academies, United States service academy in West Point, New York. It was originally established as a fort, since it sits on strategic high ground overlooking the Hudson River with a scenic view, north of New York City. It is the oldest of the five American service academies and educates cadets for Commission (document)#United States, commissioning into the United States Army. The academy was founded in 1802, one year after President Thomas Jefferson directed that plans be set in motion to establish it. It was constructed on site of Fort Clinton (West Point), Fort Clinton on West Point overlooking the Hudson, which Colonial General Benedict Arnold conspired to turn over to the British during the American Revolutionary War, Revolutionary War. The entire central campus is a National Historic Landmark, national landmark and home to scores of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Buck Stops Here
Buck passing, or passing the buck, or sometimes (playing) the blame game, is the act of attributing to another person or group one's own responsibility. It is often used to refer to a strategy in power politics whereby a state tries to get another state to deter or fight an aggressor state while it remains on the sidelines. Etymology The expression is said to have originated from poker in which a marker or counter (such as a knife with a buckhorn handle during the American Frontier era) was used to indicate the person whose turn it was to deal. If the player did not wish to deal, the responsibility could be passed by the passing of the " buck," as the counter came to be called, to the next player. In international relations Passing the buck in international relations theory involves the tendency of nation-states to refuse to confront a growing threat in the hopes that another state will. The most notable example was the refusal of the United Kingdom, United States, France, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry S
Harry may refer to: TV shows * ''Harry'' (American TV series), a 1987 American comedy series starring Alan Arkin * ''Harry'' (British TV series), a 1993 BBC drama that ran for two seasons * ''Harry'' (talk show), a 2016 American daytime talk show hosted by Harry Connick Jr. People and fictional characters * Harry (given name), a list of people and fictional characters with the given name * Harry (surname), a list of people with the surname * Dirty Harry (musician) (born 1982), British rock singer who has also used the stage name Harry * Harry Potter (character), the main protagonist in a Harry Potter fictional series by J. K. Rowling Other uses * Harry (derogatory term), derogatory term used in Norway * ''Harry'' (album), a 1969 album by Harry Nilsson *The tunnel used in the Stalag Luft III escape ("The Great Escape") of World War II * ''Harry'' (newspaper), an underground newspaper in Baltimore, Maryland See also *Harrying (laying waste), may refer to the following historical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nazi Germany
Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was the German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a dictatorship. Under Hitler's rule, Germany quickly became a totalitarian state where nearly all aspects of life were controlled by the government. The Third Reich, meaning "Third Realm" or "Third Empire", alluded to the Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800–1806) and German Empire (1871–1918). The Third Reich, which Hitler and the Nazis referred to as the Thousand-Year Reich, ended in May 1945 after just 12 years when the Allies defeated Germany, ending World War II in Europe. On 30 January 1933, Hitler was appointed chancellor of Germany, the head of gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calabozo
Calabozo, officially Villa de Todos los Santos de Calabozo, is a city in Venezuela located in the Guárico state, capital of the Francisco de Miranda Municipality and former capital of the state. It has a population of 168,605, according to the National Institute of Statistics (INE) in 2020. It is located in the center-west of Guárico state, and is one of the main rice producers in the country. In addition, it has the largest irrigation system in Venezuela. Calabozo, is a mostly colonial city and is linked to its modern urban areas, being the largest colonial center in the country, and is located at 105 m a.s.l. n. m., at the margin of the Guárico River in the high central plain. Its location is on the banks of the Generoso Campilongo Dam, an important work both in its time and today, being the largest in Venezuela and one of the largest in Latin America. It is the seat of the Roman Catholic archdiocese of Calabozo. Geography Calabozo is situated in the midst of an extens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dosimeter
A radiation dosimeter is a device that measures dose uptake of external ionizing radiation. It is worn by the person being monitored when used as a personal dosimeter, and is a record of the radiation dose received. Modern electronic personal dosimeters can give a continuous readout of cumulative dose and current dose rate, and can warn the wearer with an audible alarm when a specified dose rate or a cumulative dose is exceeded. Other dosimeters, such as thermoluminescent or film types, require processing after use to reveal the cumulative dose received, and cannot give a current indication of dose while being worn. Personal dosimeters The personal ionising radiation dosimeter is of fundamental importance in the disciplines of radiation dosimetry and radiation health physics and is primarily used to estimate the radiation dose deposited in an individual wearing the device. Ionising radiation damage to the human body is cumulative, and is related to the total dose received, for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington D
Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on Washington, D.C. * George Washington (1732–1799), the first president of the United States Washington may also refer to: Places England * Washington, Tyne and Wear, a town in the City of Sunderland metropolitan borough ** Washington Old Hall, ancestral home of the family of George Washington * Washington, West Sussex, a village and civil parish Greenland * Cape Washington, Greenland * Washington Land Philippines *New Washington, Aklan, a municipality *Washington, a barangay in Catarman, Northern Samar *Washington, a barangay in Escalante, Negros Occidental *Washington, a barangay in San Jacinto, Masbate *Washington, a barangay in Surigao City United States * Washington, Wisconsin (other) * Fort Washington (disambiguatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Moderator
In nuclear engineering, a neutron moderator is a medium that reduces the speed of fast neutrons, ideally without capturing any, leaving them as thermal neutrons with only minimal (thermal) kinetic energy. These thermal neutrons are immensely more susceptible than fast neutrons to propagate a nuclear chain reaction of uranium-235 or other fissile isotope by colliding with their atomic nucleus. Water (sometimes called "light water" in this context) is the most commonly used moderator (roughly 75% of the world's reactors). Solid graphite (20% of reactors) and heavy water (5% of reactors) are the main alternatives. Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility. Moderation Neutrons are normally bound into an atomic nucleus, and do not exist free for long in nature. The unbound neutron has a half-life of 10 minutes and 11 seconds. The release of neutrons from the nucleus requires exceeding the binding energy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Nucleus
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment. After the discovery of the neutron in 1932, models for a nucleus composed of protons and neutrons were quickly developed by Dmitri Ivanenko and Werner Heisenberg. An atom is composed of a positively charged nucleus, with a cloud of negatively charged electrons surrounding it, bound together by electrostatic force. Almost all of the mass of an atom is located in the nucleus, with a very small contribution from the electron cloud. Protons and neutrons are bound together to form a nucleus by the nuclear force. The diameter of the nucleus is in the range of () for hydrogen (the diameter of a single proton) to about for uranium. These dimensions are much smaller than the diameter of the atom itself (nucleus + electron cloud), by a factor of about 26,634 (uranium atomic radiu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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