|
Constants Of Nature
Constant or The Constant may refer to: Mathematics * Constant (mathematics), a non-varying value * Mathematical constant, a special number that arises naturally in mathematics, such as or Other concepts * Control variable or scientific constant, in experimentation the unchanging or constant variable * Physical constant, a physical quantity generally believed to be universal and unchanging * Constant (computer programming), a value that, unlike a variable, cannot be reassociated with a different value * Logical constant, a symbol in symbolic logic that has the same meaning in all models, such as the symbol "=" for "equals" People * Constant (given name) * Constant (surname) * John, Elector of Saxony (1468–1532), known as John the Constant * Constant Nieuwenhuys (1920-2005), better known as Constant Places * Constant, Barbados, a populated place Arts and entertainment * " The Constant", a 2008 episode of the television show ''Lost'' * ''The Constant'' (Story of the Year al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant (mathematics)
In mathematics, the word constant conveys multiple meanings. As an adjective, it refers to non-variance (i.e. unchanging with respect to some other value); as a noun, it has two different meanings: * A fixed and well-defined number or other non-changing mathematical object, or the symbol denoting it. The terms '' mathematical constant'' or '' physical constant'' are sometimes used to distinguish this meaning. * A function whose value remains unchanged (i.e., a '' constant function''). Such a constant is commonly represented by a variable which does not depend on the main variable(s) in question. For example, a general quadratic function is commonly written as: :a x^2 + b x + c\, , where , and are constants ( coefficients or parameters), and a variable—a placeholder for the argument of the function being studied. A more explicit way to denote this function is :x\mapsto a x^2 + b x + c \, , which makes the function-argument status of (and by extension the constancy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Constant
A mathematical constant is a number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an Letter (alphabet), alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. Constants arise in many areas of mathematics, with constants such as and pi, occurring in such diverse contexts as geometry, number theory, statistics, and calculus. Some constants arise naturally by a fundamental principle or intrinsic property, such as the ratio between the circumference and diameter of a circle (). Other constants are notable more for historical reasons than for their mathematical properties. The more popular constants have been studied throughout the ages and computed to many decimal places. All named mathematical constants are Definable real number, definable numbers, and usually are also computable numbers (Chaitin's constant being a significant exception). Basic mathematical constants These a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
E (mathematical Constant)
The number is a mathematical constant approximately equal to 2.71828 that is the base of a logarithm, base of the natural logarithm and exponential function. It is sometimes called Euler's number, after the Swiss mathematician Leonhard Euler, though this can invite confusion with Euler numbers, or with Euler's constant, a different constant typically denoted \gamma. Alternatively, can be called Napier's constant after John Napier. The Swiss mathematician Jacob Bernoulli discovered the constant while studying compound interest. The number is of great importance in mathematics, alongside 0, 1, Pi, , and . All five appear in one formulation of Euler's identity e^+1=0 and play important and recurring roles across mathematics. Like the constant , is Irrational number, irrational, meaning that it cannot be represented as a ratio of integers, and moreover it is Transcendental number, transcendental, meaning that it is not a root of any non-zero polynomial with rational coefficie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Control Variable
A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout the course of the investigation. Control variables could strongly influence experimental results were they not held constant during the experiment in order to test the relative relationship of the dependent variable (DV) and independent variable (IV). The control variables themselves are not of primary interest to the experimenter. "Good controls", also known as “confounders” or “deconfounders”, are variables which are theorized to be unaffected by the treatment and which are intended to eliminate omitted-variable bias. "Bad controls", on the other hand, are variables that could be affected by the treatment, might contribute to collider bias, and lead to erroneous results. Usage A variable in an experiment which is held constant in order to assess the relationship between multiple variables, is a control variable. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Constant
A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that cannot be explained by a theory and therefore must be measured experimentally. It is distinct from a mathematical constant, which has a fixed numerical value, but does not directly involve any physical measurement. There are many physical constants in science, some of the most widely recognized being the speed of light in vacuum ''c'', the gravitational constant ''G'', the Planck constant ''h'', the electric constant ''ε''0, and the elementary charge ''e''. Physical constants can take many dimensional forms: the speed of light signifies a maximum speed for any object and its dimension is length divided by time; while the proton-to-electron mass ratio is dimensionless. The term "fundamental physical constant" is sometimes used to refer to universal-but-dimensioned physical constants such as those mentioned above. Increasingly, however, physicists reserve the expressi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant (computer Programming)
In computer programming, a constant is a Value (computer science), value that is not altered by the Computer program, program during normal Execution (computing), execution. When associated with an Identifier (computer languages), identifier, a constant is said to be "named," although the terms "constant" and "named constant" are often used interchangeably. This is contrasted with a Variable (computer science), variable, which is an identifier with a value that can be changed during normal execution. To simplify, constants' values ''remains,'' while the values of variables ''varies,'' hence both their names. Constants are useful for both programmers and compilers: for programmers, they are a form of self-documenting code and allow reasoning about Correctness (computer science), correctness, while for compilers, they allow compile-time and Run time (program lifecycle phase), run-time checks that verify that constancy assumptions are not violated, and allow or simplify some compiler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logical Constant
In logic, a logical constant or constant symbol of a language \mathcal is a symbol that has the same semantic value under every interpretation of \mathcal. Two important types of logical constants are logical connectives and quantifiers. The equality predicate (usually written '=') is also treated as a logical constant in many systems of logic. One of the fundamental questions in the philosophy of logic is "What is a logical constant?"; that is, what special feature of certain constants makes them ''logical'' in nature? Some symbols that are commonly treated as logical constants are: Many of these logical constants are sometimes denoted by alternate symbols (for instance, the use of the symbol "&" rather than "∧" to denote the logical and). Defining logical constants is a major part of the work of Gottlob Frege and Bertrand Russell. Russell returned to the subject of logical constants in the preface to the second edition (1937) of '' The Principles of Mathematics'' not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant (given Name)
Constant is a given name, and may refer to: * André Henri Constant van Hasselt (1806–1874), Flemish poet * André Marie Constant Duméril (1774–1860), French zoologist * Constant Chevillon (1880–1944), Grand Master of the Freemasonry Rite of Memphis-Misraïm * Constant d'Aubigné (1647), French nobleman * Constant de Kerchove de Denterghem (1790–1865), Belgian liberal politician * Constant Feith (1884–1958), Dutch amateur football player * Constant Fornerod (1819–1899), Swiss politician * Constant Fouard (1837–1903), French ecclesiastical writer * Constant Huret (1870–1951), long distance track racing cyclist * Constant Janssen (1895–1970), Belgian physician and businessman * Constant Lambert (1905–1951), British composer and conductor * Constant Le Marchand de Lignery (1662–1732), French military officer * Constant Lestienne (born 1992), French tennis player * Constant Martin (1910–1995), French engineer and inventor inventor of the clavioline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant (surname)
Constant is a surname. Notable people with the surname include: *Benjamin Constant (1767–1830), Swiss-born thinker, writer and French politician * Benjamin Constant (Brazil) (1836–1891), Brazilian military man and political thinker * David Constant (born 1941), international cricket umpire * Edward Constant II (born c. 1942), American historian * Emmanuel Constant (bishop) (1928–2009), Roman Catholic Haitian bishop * Emmanuel Constant (born 1956), founder of FRAPH * F. Woodbridge Constant (1904–1988), American physicist * Jean-Joseph Benjamin-Constant, (1845 – 1902), French painter * Marius Constant (1925–2004), Romanian-born French composer * Paul-Henri-Benjamin d'Estournelles de Constant (1852–1924), French diplomat and politician * Pete Constant (born 1963), American politician * Kevin Constant (born 1987), Guinean footballer See also * Constance (name) *Constant (given name) Constant is a given name, and may refer to: * André Henri Constant van Hasselt (1806–1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John, Elector Of Saxony
John (30 June 146816 August 1532), known as John the Steadfast or John the Constant (''Johann, der Beständige''), was Prince-elector, Elector of Electorate of Saxony, Saxony from 1525 until 1532 from the House of Wettin. He is notable for organising the Lutheran Church in the Electorate of Saxony from a state and administrative level. In that, he was aided by Martin Luther, whose "Saxon model" of a Lutheran church was also soon to be implemented beyond Saxony, in other territories of the Holy Roman Empire. Luther turned to the Elector for secular leadership and funds on behalf of a church largely shorn of its assets and income after the break with Rome.Brecht, 2:260–63, 67; Mullett, 184–86. He played a part in the Protestation at Speyer. Biography Born in Meissen, John was the fifth of the seven children of Ernest, Elector of Saxony and Elisabeth of Bavaria, Electress of Saxony, Elisabeth of Bavaria. From 1486 onward he was the heir presumptive of his childless brother Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant Nieuwenhuys
Constant Anton Nieuwenhuys (21 July 1920 – 1 August 2005), better known as Constant, was a Dutch painter, sculptor, graphic artist, author and musician. Early period Constant was born in Amsterdam on 21 July 1920 as the first son of Pieter Nieuwenhuijs and Maria Cornelissen. Their second son, Jan Nieuwenhuys, was born a year later. Both sons became artists although their parents had no apparent interest in art.Constant, une rétrospective, Musée Picasso Antibes, 2001 As a young child Constant drew passionately and showed great talent. He read literature with a special preference for poetry and played musical instruments. During his teenage years he learned to sing and to read music while in the church choir at the Ignatius Gymnasium, a prestigious Jesuit school in Amsterdam. In his later years, greatly inspired by gypsy style, gypsy music, he only played improvised music. He played guitar, violin and at 45 years of age also mastered playing the cimbalon.Trudy van der Horst, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constant, Barbados
Constant is a populated place in the parish of Saint George, Barbados. See also * List of cities, towns and villages in Barbados This is a list of cities, towns and villages in Barbados. Barbados is a sovereign island country in the Lesser Antilles, in the Americas. It is in length and up to in width, covering an area of . It is situated in the western area of the Nort ... References Saint George, Barbados Populated places in Barbados {{Barbados-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
