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Braille ( , ) is a tactile writing system used by people who are visually impaired. It can be read either on embossed paper or by using refreshable braille displays that connect to computers and smartphone devices. Braille can be written using a slate and stylus, a braille writer, an electronic braille notetaker or wi... | 16 |
Blue Velvet is a 1986 American neo-noir mystery thriller film written and directed by David Lynch. Blending psychological horror with film noir, the film stars Kyle MacLachlan, Isabella Rossellini, Dennis Hopper, and Laura Dern, and is named after the 1951 song of the same name. The film concerns a young college studen... | 8 |
Bagpipes are a woodwind instrument using enclosed reeds fed from a constant reservoir of air in the form of a bag. The Great Highland bagpipes are well known, but people have played bagpipes for centuries throughout large parts of Europe, Northern Africa, Western Asia, around the Persian Gulf and northern parts of Sout... | 5 |
Biochemistry or biological chemistry is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology, and metabolism. Over the last decades of the 20th century, biochemistry has be... | 7 |
Badminton is a racquet sport played using racquets to hit a shuttlecock across a net. Although it may be played with larger teams, the most common forms of the game are "singles" (with one player per side) and "doubles" (with two players per side). Badminton is often played as a casual outdoor activity in a yard or on ... | 11 |
The Baroque (, ; ) or Baroquism is a Western style of architecture, music, dance, painting, sculpture, poetry, and other arts that flourished from the early 17th century until the 1750s. It followed Renaissance art and Mannerism and preceded the Rococo (in the past often referred to as "late Baroque") and Neoclassical ... | 6 |
The Bank of Italy (Italian: Banca d'Italia, informally referred to as Bankitalia) () is the central bank of Italy and part of the European System of Central Banks. It is located in Palazzo Koch, via Nazionale, Rome. The bank's current governor is Ignazio Visco, who took the office on 1 November 2011.
Until January 19... | 6 |
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies. It is typically measured in hertz, and depending on context, may specifically refer to passband bandwidth or baseband bandwidth. Passband bandwidth is the difference between the upper and lower cutoff frequencies o... | 9 |
In Buddhism, a bodhisattva ( ; () or bodhisatva is a person who is on the path towards bodhi ('awakening') or Buddhahood.
In the Early Buddhist schools, as well as modern Theravāda Buddhism, bodhisattva (Pāli: bodhisatta) refers to someone who has made a resolution to become a Buddha and has also received a confirmati... | 7 |
British Airways (BA) is the flag carrier of the United Kingdom. It is headquartered in London, England, near its main hub at Heathrow Airport.
The airline is the second largest UK-based carrier, based on fleet size and passengers carried, behind easyJet. In January 2011 BA merged with Iberia, creating the Internationa... | 13 |
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-powered assisted, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A is called a cyclist, or bicyclist.
Bicycles were introduced in the 19th century in Europe. By the early 21st ... | 20 |
Biopolymers are natural polymers produced by the cells of living organisms. Like other polymers, biopolymers consist of monomeric units that are covalently bonded in chains to form larger molecules. There are three main classes of biopolymers, classified according to the monomers used and the structure of the biopolyme... | 5 |
The 2001 United Kingdom general election was held on Thursday 7 June 2001, four years after the previous election on 1 May 1997, to elect 659 members to the House of Commons. The governing Labour Party was re-elected to serve a second term in government with another landslide victory with a 167 majority, returning 412 ... | 5 |
The Book of Mormon is a religious text of the Latter Day Saint movement, which, according to Latter Day Saint theology, contains writings of ancient prophets who lived on the American continent from 600 BC to AD 421 and during an interlude dated by the text to the unspecified time of the Tower of Babel. It was first pu... | 8 |
Buffalo is the second-most populated city in the U.S. state of New York and the seat of Erie County. It lies in Western New York, at the eastern end of Lake Erie, at the head of the Niagara River, on the United States border with Canada. With a population of 278,349 according to the 2020 census, Buffalo is the 78th-lar... | 15 |
Benjamin Franklin ( April 17, 1790) was an American polymath who was active as a writer, scientist, inventor, statesman, diplomat, printer, publisher, and political philosopher. Among the leading intellectuals of his time, Franklin was one of the Founding Fathers of the United States, a drafter and signer of the Decla... | 14 |
Contract bridge, or simply bridge, is a trick-taking card game using a standard 52-card deck. In its basic format, it is played by four players in two competing partnerships, with partners sitting opposite each other around a table. Millions of people play bridge worldwide in clubs, tournaments, online and with friends... | 8 |
A boat is a watercraft of a large range of types and sizes, but generally smaller than a ship, which is distinguished by its larger size, shape, cargo or passenger capacity, or its ability to carry boats.
Small boats are typically found on inland waterways such as rivers and lakes, or in protected coastal areas. Howev... | 7 |
Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells. Blood in the circulatory system is also known as peripheral blood, and the blood cells it carr... | 8 |
Bigfoot, also commonly referred to as Sasquatch, is a large and hairy human-like mythical creature purported to inhabit forests in North America, particularly in the Pacific Northwest.
Enthusiasts of the subject have offered various forms of dubious evidence to prove Bigfoot's existence, including anecdotal claims of ... | 6 |
Harry Lillis "Bing" Crosby Jr. (May 3, 1903 – October 14, 1977) was an American singer, actor, television producer, television and radio personality and businessman. The first multimedia star, he was one of the most popular and influential musical artists of the 20th century worldwide. He was a leader in record sales, ... | 8 |
The Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal, usually known as the Basel Convention, is an international treaty that was designed to reduce the movements of hazardous waste between nations, and specifically to prevent transfer of hazardous waste from developed to... | 6 |
BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Thomas E. Kurtz at Dartmouth College in 1963. They wanted to enable students in non-scientific fields to use computer... | 13 |
In chaos theory, the butterfly effect is the sensitive dependence on initial conditions in which a small change in one state of a deterministic nonlinear system can result in large differences in a later state.
The term is closely associated with the work of mathematician and meteorologist Edward Norton Lorenz. He not... | 5 |
Borland Software Corporation was a computer technology company founded in 1983 by Niels Jensen, Ole Henriksen, Mogens Glad, and Philippe Kahn. Its main business was the development and sale of software development and software deployment products. Borland was first headquartered in Scotts Valley, California, then in Cu... | 9 |
Richard Buckminster Fuller (; July 12, 1895 – July 1, 1983) was an American architect, systems theorist, writer, designer, inventor, philosopher, and futurist. He styled his name as R. Buckminster Fuller in his writings, publishing more than 30 books and coining or popularizing such terms as "Spaceship Earth", "Dymaxio... | 16 |
Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have often been used to describe opposites such as good and evil, the Dark Ages versus... | 7 |
Bletchley Park is an English country house and estate in Bletchley, Milton Keynes (Buckinghamshire) that became the principal centre of Allied code-breaking during the Second World War. The mansion was constructed during the years following 1883 for the financier and politician Sir Herbert Leon in the Victorian Gothic,... | 11 |
Bede (; , ; 672/326 May 735), also known as Saint Bede, The Venerable Bede, and Bede the Venerable (), was an English monk and an author and scholar. He was one of the greatest teachers and writers during the Early Middle Ages, and his most famous work, Ecclesiastical History of the English People, gained him the tit... | 7 |
The Battle of Blenheim (; ; ) fought on , was a major battle of the War of the Spanish Succession. The overwhelming Allied victory ensured the safety of Vienna from the Franco-Bavarian army, thus preventing the collapse of the reconstituted Grand Alliance.
Louis XIV of France sought to knock the Holy Roman Emperor, Le... | 8 |
The Battle of Ramillies (), fought on 23 May 1706, was a battle of the War of the Spanish Succession. For the Grand AllianceAustria, England, and the Dutch Republicthe battle had followed an indecisive campaign against the Bourbon armies of King Louis XIV of France in 1705. Although the Allies had captured Barcelona th... | 6 |
Brian Wilson Kernighan (; born January 30, 1942) is a Canadian computer scientist.
He worked at Bell Labs and contributed to the development of Unix alongside Unix creators Ken Thompson and Dennis Ritchie. Kernighan's name became widely known through co-authorship of the first book on the C programming language (The C... | 9 |
BCPL ("Basic Combined Programming Language") is a procedural, imperative, and structured programming language. Originally intended for writing compilers for other languages, BCPL is no longer in common use. However, its influence is still felt because a stripped down and syntactically changed version of BCPL, called B... | 7 |
A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries.
The term battleship came into use in the late 1880s to describe a type of ironclad warship, now referred to by historians as pre-dreadnought battleships. I... | 14 |
The battlecruiser (also written as battle cruiser or battle-cruiser) was a type of capital ship of the first half of the 20th century. These were similar in displacement, armament and cost to battleships, but differed in form and balance of attributes. Battlecruisers typically had thinner armour (to a varying degree) a... | 14 |
Robert James Lee Hawke (9 December 1929 – 16 May 2019) was an Australian politician and trade unionist who served as the 23rd prime minister of Australia from 1983 to 1991. He held office as the leader of the Australian Labor Party (ALP), having previously served as the president of the Australian Council of Trade Uni... | 8 |
Blaise Pascal ( , , ; ; 19 June 1623 – 19 August 1662) was a French mathematician, physicist, inventor, philosopher, and Catholic writer.
Pascal was a child prodigy who was educated by his father, a tax collector in Rouen. His earliest mathematical work was on conic sections; he wrote a significant treatise on the s... | 5 |
A binary prefix is a unit prefix that indicates a multiple of a unit of measurement by an integer power of two. The most commonly used binary prefixes are kibi (symbol Ki, meaning 210= 1024), mebi (Mi, 220 = ), and gibi (Gi, 230 = ). They are most often used in information technology as multipliers of bit and byte, wh... | 10 |
In computational complexity theory, bounded-error quantum polynomial time (BQP) is the class of decision problems solvable by a quantum computer in polynomial time, with an error probability of at most 1/3 for all instances. It is the quantum analogue to the complexity class BPP.
A decision problem is a member of BQP... | 7 |
A bishop is an ordained member of the clergy who is entrusted with a position of authority and oversight in a religious institution.
In Christianity, bishops are normally responsible for the governance of dioceses. The role or office of bishop is called episcopacy. Organizationally, several Christian denominations ut... | 8 |
Bordeaux ( , ; Gascon ; ) is a city on the river Garonne in the Gironde department, southwestern France. A port city, it is the capital of the Nouvelle-Aquitaine region, as well as the prefecture of the Gironde department. Its inhabitants are called "Bordelais (masculine) or "Bordelaises (feminine). The term "Bordela... | 11 |
internationally known as Bust-A-Move, is a 1994 tile-matching puzzle arcade game developed and published by Taito. It is based on the 1986 arcade game Bubble Bobble, featuring characters and themes from that game. Its characteristically cute Japanese animation and music, along with its play mechanics and level designs,... | 6 |
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have complex i... | 10 |
Brouwer's fixed-point theorem is a fixed-point theorem in topology, named after L. E. J. (Bertus) Brouwer. It states that for any continuous function mapping a nonempty compact convex set to itself, there is a point such that . The simplest forms of Brouwer's theorem are for continuous functions from a closed interv... | 5 |
In statistical mechanics and mathematics, a Boltzmann distribution (also called Gibbs distribution) is a probability distribution or probability measure that gives the probability that a system will be in a certain state as a function of that state's energy and the temperature of the system. The distribution is express... | 5 |
Bouldering is a form of free climbing that is performed on small rock formations or artificial rock walls without the use of ropes or harnesses. While bouldering can be done without any equipment, most climbers use climbing shoes to help secure footholds, chalk to keep their hands dry and to provide a firmer grip, and ... | 5 |
The Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models of the Big Bang explain the evolution of the observable universe from the earliest known periods through its subsequent large-scale form. These models offer... | 7 |
The Boeing CIM-10 Bomarc ("Boeing Michigan Aeronautical Research Center") (IM-99 Weapon System prior to September 1962) was a supersonic ramjet powered long-range surface-to-air missile (SAM) used during the Cold War for the air defense of North America. In addition to being the first operational long-range SAM and the... | 10 |
A bus (contracted from omnibus, with variants multibus, motorbus, autobus, etc.) is a road vehicle that carries significantly more passengers than an average car or van. It is most commonly used in public transport, but is also in use for charter purposes, or through private ownership. Although the average bus carries ... | 16 |
Bali (; ) is a province of Indonesia and the westernmost of the Lesser Sunda Islands. East of Java and west of Lombok, the province includes the island of Bali and a few smaller offshore islands, notably Nusa Penida, Nusa Lembongan, and Nusa Ceningan to the southeast. The provincial capital, Denpasar, is the most popul... | 10 |
Brown University is a private Ivy League research university in Providence, Rhode Island. It is the seventh-oldest institution of higher education in the United States, founded in 1764 as the College in the English Colony of Rhode Island and Providence Plantations. One of nine colonial colleges chartered before the Ame... | 15 |
William "Bill" D. Atkinson (born March 17, 1951) is an American computer engineer and photographer. Atkinson worked at Apple Computer from 1978 to 1990.
Atkinson was the principal designer and developer of the graphical user interface (GUI) of the Apple Lisa and, later, one of the first thirty members of the original... | 7 |
Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, artificial intelligence, cognitive science, computer science, and various areas... | 9 |
The Boeing 767 is an American wide-body aircraft developed and manufactured by Boeing Commercial Airplanes.
The aircraft was launched as the 7X7 program on July 14, 1978, the prototype first flew on September 26, 1981, and it was certified on July 30, 1982. The initial 767-200 variant entered service on September 8, 1... | 33 |
A utility knife is any type of knife used for general manual work purposes. Such knives were originally fixed-blade knives with durable cutting edges suitable for rough work such as cutting cordage, cutting/scraping hides, butchering animals, cleaning fish scales, reshaping timber, and other tasks. Craft knives are sm... | 5 |
The Benelux Union (; ; ) or Benelux is a politico-economic union and formal international intergovernmental cooperation of three neighbouring states in western Europe: Belgium, the Netherlands, and Luxembourg. The name is a portmanteau formed from joining the first few letters of each country's name and was first used ... | 5 |
George Herman "Babe" Ruth (February 6, 1895 – August 16, 1948) was an American professional baseball player whose career in Major League Baseball (MLB) spanned 22 seasons, from 1914 through 1935. Nicknamed "the Bambino" and "the Sultan of Swat", he began his MLB career as a star left-handed pitcher for the Boston Red S... | 8 |
A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force commitment. An engagement with only limited commitment between the forces an... | 9 |
Botany, also called plant science (or plant sciences), plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word () meaning "pasture", "herbs" "grass", or... | 8 |
Bacillus thuringiensis (or Bt) is a gram-positive, soil-dwelling bacterium, the most commonly used biological pesticide worldwide. B. thuringiensis also occurs naturally in the gut of caterpillars of various types of moths and butterflies, as well on leaf surfaces, aquatic environments, animal feces, insect-rich enviro... | 8 |
A bacteriophage (), also known informally as a phage (), is a virus that infects and replicates within bacteria and archaea. The term was derived from "bacteria" and the Greek φαγεῖν (), meaning "to devour". Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are e... | 8 |
Bacillus Calmette–Guérin (BCG) vaccine is a vaccine primarily used against tuberculosis (TB). It is named after its inventors Albert Calmette and Camille Guérin. In countries where tuberculosis or leprosy is common, one dose is recommended in healthy babies as soon after birth as possible. In areas where tuberculosis i... | 5 |
The common buzzard (Buteo buteo) is a medium-to-large bird of prey which has a large range. It is a member of the genus Buteo in the family Accipitridae. The species lives in most of Europe and extends its breeding range across much of the Palearctic as far as northwestern China (Tian Shan), far western Siberia and nor... | 10 |
Barnard's Star is a small red dwarf star in the constellation of Ophiuchus. At a distance of from Earth, it is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and the closest star in the northern celestial hemisphere. Its stellar mass is about 16% of the Sun... | 7 |
The Bay of Quinte () is a long, narrow bay shaped like the letter "Z" on the northern shore of Lake Ontario in the province of Ontario, Canada. It is just west of the head of the Saint Lawrence River that drains the Great Lakes into the Gulf of Saint Lawrence. It is located about east of Toronto and west of Montreal.... | 5 |
The bassoon is a musical instrument in the woodwind family, which plays in the tenor and bass ranges. It is composed of six pieces, and is usually made of wood. It is known for its distinctive tone color, wide range, versatility, and virtuosity. It is a non-transposing instrument and typically its music is written in t... | 12 |
Bipedalism is a form of terrestrial locomotion where a tetrapod moves by means of its two rear (or lower) limbs or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning 'two feet' (from Latin bis 'double' and pes 'foot'). Types of bipedal movement include walking or running (a ... | 10 |
In general, bootstrapping usually refers to a self-starting process that is supposed to continue or grow without external input.
Etymology
Tall boots may have a tab, loop or handle at the top known as a bootstrap, allowing one to use fingers or a boot hook tool to help pull the boots on. The saying "to " was already... | 11 |
Bioinformatics () is an interdisciplinary field of science that develops methods and software tools for understanding biological data, especially when the data sets are large and complex. Bioinformatics uses biology, chemistry, physics, computer science, computer programming, information engineering, mathematics and st... | 26 |
Brian Russell De Palma (born September 11, 1940) is an American film director and screenwriter. With a career spanning over 50 years, he is best known for work in the suspense, crime and psychological thriller genres. His films include mainstream box office hits such as Carrie (1976), Dressed to Kill (1980), Scarface (... | 5 |
The North American B-25 Mitchell is an American medium bomber that was introduced in 1941 and named in honor of Brigadier General William "Billy" Mitchell, a pioneer of U.S. military aviation. Used by many Allied air forces, the B-25 served in every theater of World War II, and after the war ended, many remained in ser... | 17 |
Sir Robert Charlton (11 October 1937 – 21 October 2023) was an English professional footballer who played as an attacking midfielder, central midfielder, and left winger. Widely considered one of the greatest players of all time, he was a member of the England team that won the 1966 FIFA World Cup, the year he also wo... | 5 |
Barry Lyndon is a 1975 historical drama film written, directed, and produced by Stanley Kubrick, based on the 1844 novel The Luck of Barry Lyndon by William Makepeace Thackeray. Starring Ryan O'Neal, Marisa Berenson, Patrick Magee, Leonard Rossiter, and Hardy Krüger, the film recounts the early exploits and later unrav... | 6 |
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane, and contains many macromolecules such as proteins, DNA and RNA, as well as many small molecules of nutrients and metabolites. The term comes from the Latin word meaning 'small room'.
... | 13 |
Barnard College, officially titled as Barnard College, Columbia University, is a private women's liberal arts college in the borough of Manhattan in New York City. It was founded in 1889 by a group of women led by young student activist Annie Nathan Meyer, who petitioned Columbia University's trustees to create an affi... | 5 |
Boxing (also known as "western boxing" or "pugilism") is a combat sport and a martial art in which two people, usually wearing protective gloves and other protective equipment such as hand wraps and mouthguards, throw punches at each other for a predetermined amount of time in a boxing ring.
Although the term boxing i... | 5 |
Hindi cinema, popularly known as Bollywood and formerly as Bombay cinema, refers to the film industry based in Mumbai, engaged in production of motion pictures in Hindi language. The popular term Bollywood, is a portmanteau of "Bombay" (former name of Mumbai) and "Hollywood". The industry is a part of the larger Indian... | 12 |
The Baháʼí Faith is a religion founded in the 19th century that teaches the essential worth of all religions and the unity of all people. Established by Baháʼu'lláh ("Bahaa Allah", Arabic: "Glory to God"), it initially developed in Iran and parts of the Middle East, where it has faced ongoing persecution since its ince... | 7 |
In computer science, binary search, also known as half-interval search, logarithmic search, or binary chop, is a search algorithm that finds the position of a target value within a sorted array. Binary search compares the target value to the middle element of the array. If they are not equal, the half in which the targ... | 12 |
The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later renamed Volgograd) in Southern Russia. The battle was marked by fierce close-quarters com... | 17 |
A base pair (bp) is a fundamental unit of double-stranded nucleic acids consisting of two nucleobases bound to each other by hydrogen bonds. They form the building blocks of the DNA double helix and contribute to the folded structure of both DNA and RNA. Dictated by specific hydrogen bonding patterns, "Watson–Crick" (... | 5 |
The Baltimore Ravens are a professional American football team based in Baltimore. The Ravens compete in the National Football League (NFL) as a member of the American Football Conference (AFC) North division. The team plays its home games at M&T Bank Stadium and is headquartered in Owings Mills, Maryland.
The Baltimo... | 7 |
The British National Party (BNP) is a far-right, British fascist political party in the United Kingdom. It is headquartered in Wigton, Cumbria, and is led by Adam Walker. A minor party, it has no elected representatives at any level of UK government. The party was founded in 1982, and reached its greatest level of succ... | 9 |
Baptism (from ) is a Christian sacrament of initiation and adoption, almost invariably with the use of water. It may be performed by sprinkling or pouring water on the head, or by immersing in water either partially or completely, traditionally three times, once for each person of the Trinity. The synoptic gospels reco... | 7 |
Beatmatching or pitch cue is a disc jockey technique of pitch shifting or time stretching an upcoming track to match its tempo to that of the currently playing track, and to adjust them such that the beats (and, usually, the bars) are synchronized—e.g. the kicks and snares in two house records hit at the same time when... | 6 |
Black Sabbath were an English rock band formed in Birmingham in 1968 by guitarist Tony Iommi, drummer Bill Ward, bassist Geezer Butler and vocalist Ozzy Osbourne. They are often cited as pioneers of heavy metal music. The band helped define the genre with releases such as Black Sabbath (1970), Paranoid (1970) and Maste... | 13 |
The Buffalo Bills are a professional American football team based in the Buffalo-Niagara Falls metropolitan area. The Bills compete in the National Football League (NFL) as a member club of the league's American Football Conference (AFC) East division. The team plays its home games at Highmark Stadium in Orchard Park, ... | 5 |
The Central Artery/Tunnel Project (CA/T Project), commonly known as the Big Dig, was a megaproject in Boston that rerouted the Central Artery of Interstate 93 (I-93), the chief highway through the heart of the city, into the 1.5-mile (2.4 km) Thomas P. O'Neill Jr. Tunnel. The project also included the construction of t... | 13 |
In computer science, a binary search tree (BST), also called an ordered or sorted binary tree, is a rooted binary tree data structure with the key of each internal node being greater than all the keys in the respective node's left subtree and less than the ones in its right subtree. The time complexity of operations on... | 5 |
In computer science, a binary tree is a tree data structure in which each node has at most two children, referred to as the left child and the right child. That is, it is a k-ary tree with . A recursive definition using set theory is that a binary tree is a tuple (L, S, R), where L and R are binary trees or the empty s... | 5 |
Backgammon is a two-player board game played with counters and dice on tables boards. It is the most widespread Western member of the large family of tables games, whose ancestors date back nearly 5,000 years to the regions of Mesopotamia and Persia. The earliest record of backgammon itself dates to 17th-century Englan... | 9 |
Batman is a superhero appearing in American comic books published by DC Comics. The character was created by artist Bob Kane and writer Bill Finger, and debuted in the 27th issue of the comic book Detective Comics on March 30, 1939. In the DC Universe continuity, Batman is the alias of Bruce Wayne, a wealthy American p... | 17 |
The Boston Red Sox are an American professional baseball team based in Boston. The Red Sox compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Founded in as one of the American League's eight charter franchises, the team's home ballpark has been Fenway Park since . The "R... | 10 |
The Baltimore Orioles (also known as the O's) are an American professional baseball team based in Baltimore, Maryland. The Orioles compete in Major League Baseball (MLB) as a member of the American League (AL) East division. As one of the American League's eight charter teams in 1901, the franchise spent its first year... | 6 |
BBC Radio 1 is a British national radio station owned and operated by the BBC. It specialises in modern popular music and current chart hits throughout the day. The station provides alternative genres at night, including electronica, dance, hip hop and indie, while its sister station 1Xtra plays black contemporary mus... | 6 |
A backplane (or "backplane system") is a group of electrical connectors in parallel with each other, so that each pin of each connector is linked to the same relative pin of all the other connectors, forming a computer bus. It is used to connect several printed circuit boards together to make up a complete computer sys... | 9 |
The Battle of Waterloo () was fought on Sunday 18 June 1815, near Waterloo (at that time in the United Kingdom of the Netherlands, now in Belgium), marking the end of the Napoleonic Wars. A French army under the command of Napoleon was defeated by two armies of the Seventh Coalition. One of these was a British-led for... | 6 |
A boomerang () is a thrown tool typically constructed with aerofoil sections and designed to spin about an axis perpendicular to the direction of its flight. A returning boomerang is designed to return to the thrower, while a non-returning boomerang is designed as a weapon to be thrown straight and is traditionally use... | 6 |
Bodybuilding is the practice of progressive resistance exercise to build, control, and develop one's muscles via hypertrophy. An individual who engages in this activity is referred to as a bodybuilder. It is primarily undertaken for aesthetic purposes over functional ones, distinguishing it from similar activities such... | 8 |
Biological warfare, also known as germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war. Biological weapons (often termed "bio-weapons", "biological threat agents", or "bio... | 12 |
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