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English Wikipedia references for Berkeley.edu 201-250 of 8765
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| Nuclear reactor technology This article is a subarticle of Nuclear power.A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate, as opposed to a nuclear bomb, in which the chain reaction occurs in a fraction of a second and is uncontrolled causing an explosion.The most significant use of nuclear reactors is as an energy source for the generation of electrical power (see Nuclear power) and for the power in some ships (see Nuclear marine propulsion). Nuclear_reactor_technology | |
| Orson Welles George Orson Welles (May 6, 1915 Academy Award-winning American film director, writer, actor and producer, who worked extensively in film, theatre, television, and radio. Welles was also an accomplished magician, starring in troop variety spectacles in the war years. Orson_Welles | |
| Ohio State University The Ohio State University (OSU) is a public research university located in Columbus, Ohio. It was founded in 1870 as a land-grant university and is currently the largest single-campus university in the United States. Ohio State is currently ranked by U.S. News & World Report as the best public university in Ohio, among the top 60 universities in the United States, and among the top 20 public universities in the United States. Ohio_State_University | |
| Oligocene The Oligocene is a geologic epoch of the Paleogene period and extends from about 33.9 million to 23 million years before the present. As with other older geologic periods, the rock beds that define the period are well identified but the exact dates of the start and end of the period are slightly uncertain. Oligocene | |
| Octal The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. Numerals can be made from binary numerals by grouping consecutive binary digits into groups of three (starting from the right). For example, the binary representation for decimal 74 is 1001010, which can be grouped into (00)1 001 010 In decimal systems each decimal place is a base of 10. Octal | |
| Recapitulation theory theory of recapitulation, also called the biogenetic law or embryological parallelism, and often expressed as "ontogeny recapitulates phylogeny", was put forward by Étienne Serres in 1824–26 as what became known as the "Meckel-Serres Law" which attempted to provide a link between comparative embryology and a "pattern of unification" in the organic world. Recapitulation_theory | |
| Oxfordian theory Oxfordian theory of Shakespearean authorship holds that Edward de Vere, 17th Earl of Oxford (1550-1604), wrote the plays and poems attributed to William Shakespeare of Stratford-upon-Avon. While a majority of mainstream scholars reject all alternative candidates for authorship, popular interest in various authorship theories continues to grow, particularly among independent scholars and theatre professionals. Since the 1920s, Oxford has been the most prevalent of several anti-Stratfordian candidates. Oxfordian_theory | |
| Orchidaceae Orchidaceae (or Orchid family) is the largest family of the flowering plants (Angiospermae). Its name is derived from the genus Orchis.The Royal Botanical Gardens of Kew list 880 genera and nearly 22,000 accepted species, but the exact number is unknown (perhaps as many as 25,000) because of taxonomic disputes. Orchidaceae | |
| Oxidative phosphorylation Oxidative phosphorylation is a metabolic pathway that uses energy released by the oxidation of nutrients to produce adenosine triphosphate (ATP). Although the many forms of life on earth use a range of different nutrients, almost all carry out oxidative phosphorylation to produce ATP, the molecule that supplies energy to metabolism. This pathway is probably so pervasive because it is a highly efficient way of releasing energy, compared to alternative fermentation processes such as anaerobic glycolysis. Oxidative_phosphorylation | |
| Octopus The octopus (, from Greek (oktapous), "eight-footed", with plural formsoctopuses , octopi , or octopodes , see below) is a cephalopod of the order Octopoda that inhabits many diverse regions of the ocean, especially coral reefs. The term may also refer to only those creatures in the genus Octopus. In the larger sense, there are around 300 recognized octopus species, which is over one-third of the total number of known cephalopod species. Octopus | |
| Paleolithic The Paleolithic or Palaeolithic Age, Era, or Period, or Old Stone Age, is a prehistoric era distinguished by the development of the first stone tools, and covers roughly 99% of human history. It extends from the introduction of stone tools by hominids such as Homo habilis 2.5 or 2.6 Paleolithic | |
| Programming language A programming language is a machine-readable artificial language designed to express computations that can be performed by a machine, particularly a computer. Programming languages can be used to create programs that specify the behavior of a machine, to express algorithms precisely, or as a mode of human communication.Many programming languages have some form of written specification of their syntax and semantics, since computers require precisely defined instructions. Programming_language | |
| Paleontology Paleontology (Britishpalaeontology) is the study of prehistoric life, including organisms' evolution and interactions with each other and their environments (their paleoecology). As a "historical science" it tries to explain causes rather than conduct experiments to observe effects. Paleontology | |
| Pennsylvanian Pennsylvanian is in the ICS geologic timescale the youngest subperiod or upper subsystem of the Carboniferous period. It lasted from roughly geochronologic units, the rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few million years. The Pennsylvanian is named after the state of Pennsylvania, where rocks with this age are widespread. Pennsylvanian | |
| Permian The Permian Permian | |
| Pliocene The Pliocene epoch (spelled Pleiocene in older texts) is the period in the geologic timescale that extends from 5.332 million to 2.588 million years before present.The Pliocene is the second and youngest epoch of the Neogene period in the Cenozoic era. The Pliocene follows the Miocene epoch and is followed by the Pleistocene epoch. Pliocene | |
| Protest song protest song is a song which is associated with a movement for social change and hence part of the broader category of topical songs (or songs connected to current events). It may be folk, classical, or commercial in genre. Among social movements that have an associated body of songs are the abolition movement, women's suffrage, the labor movement, civil rights, the anti-war movement, the feminist movement, and Environmentalism. Protest_song | |
| Paleontology Talk:Paleontology | |
| Polymerase chain reaction molecular biology, the polymerase chain reaction (PCR) is a technique to amplify a single or few copies of a piece of DNA across several orders of magnitude, generating millions or more copies of a particular DNA sequence. The method relies on thermal cycling, consisting of cycles of repeated heating and cooling of the reaction for DNA melting and enzymatic replication of the DNA. Polymerase_chain_reaction | |
| Peter Singer Peter Albert David Singer (born July 6, 1946) is an Australian philosopher. He is the Ira W. DeCamp Professor of Bioethics at Princeton University, and laureate professor at the Centre for Applied Philosophy and Public Ethics (CAPPE), University of Melbourne. Peter_Singer | |
| Peter Duesberg Peter H. Duesberg (born December 2, 1936 in Germany) is a professor of molecular and cell biology at the University of California, Berkeley, best known for identifying and mapping the src gene, considered the first true oncogene, in 1970, and more recently for his claims that HIV is harmless and not the cause of AIDS.Duesberg, along with Peter Vogt, was one of the first scientists to discover a cancer gene (oncogene). Peter_Duesberg | |
| Phylogenetics In biology, phylogenetics is the study of evolutionary relatedness among various groups of organisms (e.g., species, populations), which is discovered through molecular sequencing data and morphological data matrices. The term phylogenetics is of Greek origin from the terms phyle/phylon (φυλή/φῦλον), meaning "tribe, race," and genetikos (γενετικός), meaning "relative to birth" from genesis (γένεσις, "birth"). Phylogenetics | |
| Perestroika (, ) is the Russian term (now used in English) for the political and economic reforms introduced in June 1987 by the Soviet leader Mikhail Gorbachev. Its literal meaning is "restructuring", referring to the restructuring of the Soviet economy. Perestroika is often argued to be one reason for the fall of communist political forces in the Soviet Union and Eastern Europe, and for the end of the Cold War. Perestroika | |
| Polygamy In botany, "polygamous" means bearing both hermaphrodite and unisexual flowers on the same plant. See plant sexuality The term polygamy (a Greek word meaning "the practice of multiple marriage") is used in related ways in social anthropology, sociobiology, and sociology. Polygamy | |
| Photosynthesis Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of Bacteria, but not in Archaea. Photosynthetic organisms are called photoautotrophs, since it allows them to create their own food. Photosynthesis | |
| Political science/Archive 1 Talk:Political_science/Archive_1 | |
| Pneumatic tube Pneumatic tubes (or capsule pipelines; Lamson tubes) are systems in which cylindrical containers are propelled through a network of tubes by compressed air or by vacuum. They are used for transporting solid objects, as opposed to more generic pipelines, which transport gases or fluids. Pneumatic_tube | |
| Plate tectonics Plate tectonics (from the Greek τέκτων; tektōn, meaning "builder" or "mason") describes the large scale motions of Earth's lithosphere. The theory encompasses the older concepts of continental drift, developed during the first decades of the 20th century by Alfred Wegener, and seafloor spreading, understood during the 1960s.The outermost part of the Earth's interior is made up of two layers Above is the lithosphere, consisting of the crust and the rigid uppermost part of the mantle. Plate_tectonics | |
| Principal ideal domain abstract algebra, a principal ideal domain, or PID is an integral domain in which every ideal is principal, i.e., can be generated by a single element. More generally, a principal ring is a nonzero commutative ring whose ideals are principal, although some authors (e.g., Bourbaki) refers to PIDs as principal rings. The distinction being that a principal ideal ring may have zero divisors whereas a principal ideal domain cannot. Principal_ideal_domain | |
| Phil Ochs Philip David Ochs () (December 19, 1940 – April 9, 1976) was a U.S. protest singer (or, as he preferred, a topical singer) and songwriter who was known for his sharp wit, sardonic humor, earnest humanism, political activism, insightful and alliterative lyrics, and haunting voice. Phil_Ochs | |
| Quantum computer A quantum computer is a device for computation that makes direct use of quantum mechanical phenomena, such as superposition and entanglement, to perform operations on data. The basic principle behind quantum computation is that quantum properties can be used to represent data and perform operations on these data.Although quantum computing is still in its infancy, experiments have been carried out in which quantum computational operations were executed on a very small number of qubits (quantum binary digits). Quantum_computer | |
| Reed College Reed College is a private, independent, liberal arts college located in southeast Portland, Oregon. Founded in 1908, Reed is a four-year residential college with a campus located in Portland's residential Eastmoreland neighborhood, featuring architecture based on the Tudor-Gothic style, and a forested canyon wilderness preserve at its center. Reed_College | |
| Roman Polanski Roman Raymond Polański (born August 18, 1933) is an Academy Award-winning Polish-French film director, writer, actor and producer. Poland, and later became a celebrated director of both art house and commercial films, making such films as Rosemary's Baby (1968) and Chinatown (1974). Polanski survived the Holocaust in German occupied Poland during WWII.Sharon Tate, was murdered by the infamous Manson Family.Los Angeles and pleaded guilty to "unlawful sexual intercourse with a minor", a 13-year-old girl. Roman_Polanski | |
| Ronald Reagan Ronald Wilson Reagan (February 6, 1911 June 5, 2004) was the 40th President of the United States (1981Governor of California (1967Tampico, Illinois, Reagan moved to Los Angeles, California in the 1930s. He began a career in filmmaking and later television, making 52 films and gaining enough success to make him a household name. Ronald_Reagan | |
| Richard Nixon Richard Milhous Nixon (January 9, 1913 37th President of the United States (1969–1974) and the only president to resign the office. He was also the 36th Vice President of the United States (1953Nixon was born in Yorba Linda, California. After completing undergraduate work at Whittier College, he graduated from Duke University School of Law in 1937 and returned to California to practice law in La Mirada. Richard_Nixon | |
| History of radio The pre-history and early history of radio is the history of technology that produced radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". History_of_radio | |
| Rwanda Rwanda | |
| Ralph Nader Ralph Nader (born February 27, 1934) is an American attorney, author, lecturer, political activist, and perennial candidate for presidency as an independent candidate for President of the United States in 2004 and 2008, and a Green Party candidate in 1996 and 2000. Ralph_Nader | |
| Renewable energy Renewable energy is energy generated from natural resourcessunlight, wind, rain, tides and geothermal heat—renewable (naturally replenished). In 2006, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood-burning. Hydroelectricity was the next largest renewable source, providing 3% of global energy consumption and 15% of global electricity generation. Renewable_energy | |
| Robert Noyce Robert Norton Noyce (December 12, 1927 June 3, 1990), nicknamed "the Mayor of Silicon Valley", co-founded Fairchild Semiconductor in 1957 and Intel in 1968. He is also credited (along with Jack Kilby) with the invention of the integrated circuit or microchip. While Kilby's invention was 6 months earlier, and he did not share his finding publicly, neither man rejected the title of co-inventor. Robert_Noyce | |
| RC4 In cryptography, RC4 (also known as ARC4 or ARCFOUR meaning Alleged RC4, see below) is the most widely-used software stream cipher and is used in popular protocols such as Secure Sockets Layer (SSL) (to protect Internet traffic) and WEP (to secure wireless networks). RC4 | |
| Race (classification of human beings) Talk:Race_(classification_of_human_beings) | |
| Rudolf Steiner Rudolf Steiner (25 or 27 February 1861 – 30 March 1925), an Austrian philosopher, educator, architect, social thinker, and esotericist, gained initial recognition as a literary critic and cultural philosopher. At the beginning of the twentieth century he founded a new spiritual movement, Anthroposophy, as an esoteric philosophy growing out of European transcendentalist roots with links to Theosophy. Rudolf_Steiner | |
| Restriction fragment length polymorphism A restriction fragment length polymorphism, or RFLP, (commonly pronounced "rif lip"), is a variation in the DNA sequence of a genome that can be detected by breaking the DNA into pieces with restriction enzymes and analyzing the size of the resulting fragments by gel electrophoresis. Restriction_fragment_length_polymorphism | |
| Rhodes Rhodes (, Ródos, ; ; Rodos; Ladino:Rodi or Rodes) is a Greek island approximately southwest of Turkey in eastern Aegean Sea. It is the largest of the Dodecanese islands in terms of both land area and population, with a population of 117,007 of which 53,709 resided in the homonymous capital city of the island. Rhodes | |
| Race and intelligence Race and intelligence have in some cases been claimed to be correlated. Contemporary debate on this issue focuses on the nature, causes, and rectifications of ethnic differences in intelligence test scores. The question of the relative roles of nature and nurture in correlation does not prove causation. No gene has been shown to be linked to intelligence, "so attempts to provide a compelling genetic link of race to intelligence are not feasible at this time". Race_and_intelligence | |
| Science Science (from the Latin scientia, meaning "knowledge") refers to any systematic knowledge-base or prescriptive practice that is capable of resulting in a prediction or predictable type of outcome. In this sense, science may refer to a highly skilled technique or practice.In its more restricted contemporary sense, science refers to a system of acquiring knowledge based on scientific method, and to the organized body of knowledge gained through such research. Science | |
| Slime mold Slime mold is a broad term describing fungi-like organisms that use spores to reproduce. They were formerly classified as fungi, but are no longer considered part of this group.Their common name refers to part of some of these organism's lifecycles where they can appear gelatinous (hence the name slime). However, this feature is mostly seen with the myxomycetes, which are the only macroscopic slime molds. Slime_mold | |
| Sino-Tibetan languages The Sino-Tibetan languages form a language family composed of, at least, the Chinese and the Tibeto-Burman languages, including some 250 languages of East Asia, Southeast Asia and parts of South Asia. They are second only to the Indo-European languages in terms of the number of native speakers. Sino-Tibetan_languages | |
| Social sciences The social sciences comprise academic disciplines concerned with the study of the social life of human groups and individuals including anthropology, archeology, communication studies, cultural studies, demography, economics, human geography, history, linguistics, media studies, political science, psychology, social work, and sociology, Social_sciences |
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