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English Wikipedia references for Sciencenews.org 121-140 of 500
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| Hydrothermal vent A hydrothermal vent is a fissure in a planet's surface from which geothermally heated water issues. Hydrothermal vents are commonly found near volcanically active places, areas where tectonic plates are moving apart, ocean basins, and hotspots. Hydrothermal vents are locally very common because the earth is both geologically active and has large amounts of water on its surface and within its crust. Hydrothermal_vent | |
| Henri Cartan Henri Paul Cartan (July 8, 1904 August 13, 2008) was a son of Élie Cartan, and was, as his father was, a distinguished and influential French mathematician. Henri_Cartan | |
| Tunicate Tunicate, also known as urochordata, tunicata (and by the common names of urochordates, sea squirts, and sea pork) is a subphylum of a group of underwater saclike filter feeders with incurrent and excurrent siphons, that are members of the phylum Chordata. Most tunicates feed by filtering sea water through pharyngeal slits, but some are sub-marine predators such as the Megalodicopia hians. Tunicate | |
| Numeracy "Innumeracy" redirects here. For the book of same name, see Innumeracy (book). Numeracy is the ability to reason with numbers and other mathematical concepts. To be numerically literate, a person has to be comfortable with logic and reasoning. Some of the areas that are involved in numeracy includeThe portmanteau of "numerical literacy" was coined in 1959 by the UK Committee on Education, presided over by Sir Geoffrey Crowther. Innumeracy is a lack of numeracy. Numeracy | |
| Octanitrocubane Octanitrocubane (molecular formula8(NO2)8) is a powerful high explosive that, like TNT, is shock-insensitive (not readily detonated by shock). The octanitrocubane molecule has the same chemical structure as cubane (C8H8) except that each of the eight hydrogen atoms are replaced by a nitro group (NO2).Octanitrocubane is thought to have 20-25% greater performance than HMX (octogen), the state-of-the-art military explosive . Octanitrocubane | |
| Viswanath's constant random Fibonacci sequence is a variant of the Fibonacci sequence, defined by the recurrence relation fn = fn−1 fn−2 with the signs chosen randomly. Viswanath's constant is a mathematical constant measuring how fast random Fibonacci sequences grow. The value of Viswanath's constant is approximately 1.13198824. Viswanath's_constant | |
| Cryptorchidism Cryptorchidism is the absence of one or both testes from the scrotum. This usually represents failure of the testis to move, or "descend," during fetal development from an abdominal position, through the inguinal canal, into the ipsilateral scrotum. About 3% of full-term and 30% of premature infant boys are born with at least one undescended testis, making cryptorchidism the most common birth defect of male genitalia. Cryptorchidism | |
| Mass–energy equivalence physics, mass–energy equivalence is the concept that the mass of a body is a measure of its energy content. What we ordinarily call the mass of a body is always equal to the total energy inside, up to a factor that changes the units. Or Mass–energy_equivalence | |
| Ochre Ochre or Ocher ( , from the Greek ὠχρός, yellow) is term for both a golden-yellow or light yellow brown color and for a form of earth pigment which produces the color. The pigment can also be used to create a reddish tint known as Red ochre. The more rarely used terms Purple ochre and Brown ochre also exist for variant hues. Because of these other hues, the color Ochre is sometimes referred to as Yellow ochre. Ochre | |
| Giftlite User_talk:Giftlite | |
| Hormesis Talk:Hormesis | |
| Seiche "Seiche" is also a French term for a type of cuttlefish (Sepiida).A seiche ( "saysh") is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave. Seiche | |
| Awareness Awareness is a term referring to the ability to perceive, to feel, or to be conscious of events, objects or patterns, which does not necessarily imply understanding. In biological psychology, awareness comprises a human's or an animal's perception and cognitive reaction to a condition or event. Awareness | |
| Coin flipping Coin flipping or coin tossing is the practice of throwing a coin in the air to resolve a dispute between two parties or otherwise choose between two alternatives. It is a form of sortition that by nature has only two possible outcomes. Coin_flipping | |
| Turbo code electrical engineering and digital communications, turbo codes (originally in French Turbocodes) are a class of high-performance error correction codes developed in 1993 which are finding use in deep space satellite communications and other applications where designers seek to achieve maximal information transfer over a limited-bandwidth communication link in the presence of data-corrupting noise. Turbo_code | |
| On-Line Encyclopedia of Integer Sequences On-Line Encyclopedia of Integer Sequences (OEIS), also cited simply as Sloane's, is a freely-available online database of integer sequences.OEIS records information on integer sequences of interest to both professional mathematicians and amateurs, and is widely cited. On-Line_Encyclopedia_of_Integer_Sequences | |
| Computer poker players Computer_poker_players | |
| Sex ratio Sex ratio is the ratio of males to females in a population. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of birth, and tertiary sex ratio is the ratio of mature organisms.The human sex ratio is of particular interest to anthropologists and demographers. Sex_ratio | |
| Coprolite coprolite is fossilized animal dung. Coprolites are classified as trace fossils as opposed to body fossils, as they give evidence for the animal's behaviour (in this case, diet) rather than morphology. The name is derived from the Greek words κοπρος / kopros meaning 'dung' and λιθος / lithos meaning 'stone'. Coprolite | |
| Mimivirus Mimivirus is a viral genus containing a single identified species named Acanthamoeba polyphaga mimivirus (APMV). In colloquial speech, APMV is more commonly referred to as just “mimivirus”. It has the largest capsid diameter of all known viruses, as well as a large and complex genome compared with other viruses. Mimivirus |
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