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Shake (unit)
A shake is an informal metric unit of time equal to 10 nanoseconds, or 10−8 seconds. It was originally coined for use in nuclear physics, helping to conveniently express the timing of various events in a nuclear reaction. Etymology Like many informal units having to do with nuclear physics, it arose from top secret operations of the Manhattan Project during World War II. The word "shake" was taken from the idiomatic expression "in two shakes of a lamb's tail", which indicates a very short time interval. The phrase "a couple of shakes", in reference to the measurement of time, may have been popularized by Richard Barham's ''Ingoldsby Legends'' (1840); however, the phrase was already part of vernacular language long before that. Nuclear physics For nuclear-bomb designers, the term was a convenient name for the short interval, rounded to 10 nanoseconds, which was frequently seen in their measurements and calculations: The typical time required for one step in a chain reactio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Fission Reaction
Nuclear may refer to: Physics Relating to the Atomic nucleus, nucleus of the atom: *Nuclear engineering *Nuclear physics *Nuclear power *Nuclear reactor *Nuclear weapon *Nuclear medicine *Radiation therapy *Nuclear warfare Mathematics *Nuclear space *Nuclear operator *Nuclear congruence *Nuclear C*-algebra Biology Relating to the Cell nucleus, nucleus of the cell: * Nuclear DNA Society *Nuclear family, a family consisting of a pair of adults and their children Music *Nuclear (band), "Nuclear" (band), chilean thrash metal band *Nuclear (Ryan Adams song), "Nuclear" (Ryan Adams song), 2002 *"Nuclear", a song by Mike Oldfield from his ''Man on the Rocks'' album *Nu.Clear (EP), ''Nu.Clear'' (EP) by South Korean girl group CLC Films *Nuclear (film), ''Nuclear'' (film), a 2022 documentary by Oliver Stone. See also *Nucleus (other) *Nucleolus *Nucleation *Nucleic acid *Nucular * * {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Idiomatic Expression
An idiom is a phrase or expression that largely or exclusively carries a figurative or non-literal meaning, rather than making any literal sense. Categorized as formulaic language, an idiomatic expression's meaning is different from the literal meanings of each word inside it. Idioms occur frequently in all languages. In English alone there are an estimated twenty-five thousand idiomatic expressions. Some well known idioms in English are "spill the beans" (meaning "reveal secret information"), "it's raining cats and dogs" (meaning "it's raining intensely"), and "break a leg" (meaning "good luck"). Derivations Many idiomatic expressions were meant literally in their original use, but occasionally the attribution of the literal meaning changed and the phrase itself grew away from its original roots—typically leading to a folk etymology. For instance, the phrase "spill the beans" (meaning to reveal a secret) is first attested in 1919, but has been said to originate from an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Harris Barham
Richard Harris Barham (6 December 1788 – 17 June 1845) was an English cleric of the Church of England, a novelist and a humorous poet. He was known generally by his pseudonym Thomas Ingoldsby and as the author of ''The Ingoldsby Legends''. Life Richard Harris Barham was born in Canterbury. He was the illegitimate son of a local Alderman, also called Richard Harris Barham and a woman named Elizabeth Ffox. When he was seven years old his father died, leaving him a small estate, part of which was the manor of Tappington, in Denton, Kent, mentioned frequently in his later work ''The Ingoldsby Legends''. At nine he was sent to St Paul's School, but his studies were interrupted by an accident that partly crippled his arm for life. Deprived of vigorous bodily activity, he became a great reader and diligent student. During 1807 he entered Brasenose College, Oxford, intending at first to study for the law, but deciding on a clerical career instead. In 1813 he was ordained and foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Humorous Units Of Measurement
Many people have made use of, or neologism, invented, units of measurement intended primarily for their humor value. This is a list of such units invented by sources that are notable for reasons other than having made the unit itself, and that are widely known in the Anglophone world for their mathematical joke, humor value. Systems FFF units Most countries use the International System of Units (International System of Units, SI). In contrast, the furlong/English brewery cask units#Firkin, firkin/fortnight system of units of measurement draws attention by being extremely old fashioned and off-beat at the same time. One furlong per fortnight is very nearly 1 centimetre per minute (to within 1 part in 400). Besides having the meaning of "any obscure unit", furlongs per fortnight have also served frequently in the classroom as an example on how to reduce a unit's fraction. The speed of light may be expressed as being roughly 1.8 terafurlongs per fortnight (or megafurlongs per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barn (unit)
A barn (symbol: b) is a metric unit of area equal to (100 fm2). This is equivalent to a square that is (10 fm) each side, or a circle of diameter approximately (11.28 fm). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles. A barn is approximately the cross-sectional area of a uranium nucleus. The barn is also the unit of area used in nuclear quadrupole resonance and nuclear magnetic resonance to quantify the interaction of a nucleus with an electric field gradient. While the barn never was an SI unit, the SI standards body acknowledged it in the 8th SI Brochure (superseded in 2019) due to its use in particle physics. Etymology During Manhattan Project research on the atomic bomb dur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingoldsby Legends
''The Ingoldsby Legends'' (full title: ''The Ingoldsby Legends, or Mirth and Marvels'') is a collection of myths, legends, ghost stories and poems written supposedly by Thomas Ingoldsby of Tappington Manor, actually a pen-name of an English clergyman named Richard Harris Barham. Background The legends were first printed during 1837 as a regular series in the magazine '' Bentley's Miscellany'' and later in '' The New Monthly Magazine''. They proved immensely popular and were compiled into books published by Richard Bentley in 1840, 1842 and 1847. They remained popular during the 19th century, when they ran through many editions. They were illustrated by artists including George Cruikshank, John Leech and John Tenniel; and Arthur Rackham (1898 edition). As a priest of the Chapel Royal, with a private income, Barham was not troubled with strenuous duties, and he had ample time to read, and to compose his stories and poems. Although the "legends" are based on folklore or other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Barham
Richard Harris Barham (6 December 1788 – 17 June 1845) was an English cleric of the Church of England, a novelist and a humorous poet. He was known generally by his pseudonym Thomas Ingoldsby and as the author of ''The Ingoldsby Legends''. Life Richard Harris Barham was born in Canterbury. He was the illegitimate son of a local Alderman, also called Richard Harris Barham and a woman named Elizabeth Ffox. When he was seven years old his father died, leaving him a small estate, part of which was the manor of Tappington, in Denton, Kent, mentioned frequently in his later work ''The Ingoldsby Legends''. At nine he was sent to St Paul's School, but his studies were interrupted by an accident that partly crippled his arm for life. Deprived of vigorous bodily activity, he became a great reader and diligent student. During 1807 he entered Brasenose College, Oxford, intending at first to study for the law, but deciding on a clerical career instead. In 1813 he was ordained and foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
In Two Shakes Of A Lamb's Tail
IN, In or in may refer to: Dans * India (country code IN) * Indiana, United States (postal code IN) * Ingolstadt, Germany (license plate code IN) * In, Russia, a town in the Jewish Autonomous Oblast Businesses and organizations * Independent Network, a UK-based political association * Indiana Northeastern Railroad (Association of American Railroads reporting mark) * Indian Navy, a part of the India military * Infantry, the branch of a military force that fights on foot * IN Groupe, the producer of French official documents * MAT Macedonian Airlines (IATA designator IN) * Nam Air (IATA designator IN) * Office of Intelligence and Counterintelligence, sometimes abbreviated IN Science and technology * .in, the internet top-level domain of India * Inch (in), a unit of length * Indium, symbol In, a chemical element * Intelligent Network, a telecommunication network standard * Intra-nasal (insufflation), a method of administrating some medications and vaccines * Integrase, a retr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metric Units
Metric units are units based on the metre, gram or second and decimal (power of ten) multiples or sub-multiples of these. According to Schadow and McDonald, metric units, in general, are those units "defined 'in the spirit' of the metric system, that emerged in late 18th century France and was rapidly adopted by scientists and engineers. Metric units are in general based on reproducible natural phenomena and are usually not part of a system of comparable units with different magnitudes, especially not if the ratios of these units are not powers of 10. Instead, metric units use multiplier prefixes that magnifies or diminishes the value of the unit by powers of ten." The most widely used examples are the units of the International System of Units (SI). By extension they include units of electromagnetism from the CGS and SI units systems, and other units for which use of SI prefixes has become the norm. Other unit systems using metric units include: * International System of Elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the project was directed by Major General Leslie Groves of the United States Army Corps of Engineers, U.S. Army Corps of Engineers. Nuclear physicist J. Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the bombs. The Army program was designated the Manhattan District, as its first headquarters were in Manhattan; the name gradually superseded the official codename, Development of Substitute Materials, for the entire project. The project absorbed its earlier British counterpart, Tube Alloys, and subsumed the program from the American civilian Office of Scientific Research and Development. The Manhattan Project employed nearly 130,000 people at its peak and cost nearly US$2 billion (equivalent to about $ b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classified Information
Classified information is confidential material that a government deems to be sensitive information which must be protected from unauthorized disclosure that requires special handling and dissemination controls. Access is restricted by law or regulation to particular groups of individuals with the necessary security clearance with a need to know. A formal security clearance is required to view or handle classified material. The clearance process requires a satisfactory background investigation. Documents and other information must be properly marked "by the author" with one of several (hierarchical) levels of sensitivity—e.g. Confidential (C), Secret (S), and Top Secret (S). All classified documents require designation markings on the technical file which is usually located either on the cover sheet, header and footer of page. The choice of level is based on an impact assessment; governments have their own criteria, including how to determine the classification of an inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
