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## power

(of a real number) When a real number a is raised to the index p to give a p , the result is a power of a. The same index notation is used ...

## power Quick reference

### A Dictionary of Economics (5 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Economics
Length:
22 words

...power Strength in arranging the terms of one’s dealing with other firms or people. See also bargaining power ; countervailing power ; monopoly power...

## power Quick reference

### World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
86 words

... In mathematics, number of times a number is multiplied or divided by itself. If 2 is raised to the power 3 (written 2 3 , called 2 cubed, or 2 to the 3rd power) it is 2 × 2 × 2 or 8. A negative power indicates a fraction: e .g. 2 −3 is ½ −3 , or 1/8. A fractional power indicates a root - the power ½ is a square root (⩗), and the power 1/3 is a cube root ( 3 ⩗). Any number to the power 0 equals...

## power Quick reference

### World Encyclopedia

Reference type:
Subject Reference
Current Version:
2004
Subject:
Encyclopedias
Length:
55 words

... In physics, rate of doing work or of producing or consuming energy. It is a measure of the output of an engine or other power source. The Scottish engineer James Watt was the first to measure power; he used the unit called horsepower . The modern unit of power is the watt , named after...

## power Quick reference

### A Dictionary of Environment and Conservation (3 ed.)

Reference type:
Subject Reference
Current Version:
2017

... The rate at which energy is supplied, usually measured in watts...

## power Quick reference

### A Dictionary of Media and Communication (3 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Media studies
Length:
265 words

... 1. (‘power to’) The ability to achieve a desired outcome. 2. (‘power over’) For Weber, ‘the ability to exert control over people, even against their own will.’ If it is accepted as legitimate, based on status , and requires no direct coercion, it is authority ( see also legitimation ); coercive power is based on force. Economic power is based on class , social power is based on status, and political power is based on domination. 3. A transformative influence attributed to social structures or institutions , rather than to individual...

## power Quick reference

### Oxford Dictionary of Word Origins (3 ed.)

Reference type:
Subject Reference
Current Version:
2021
Subject:
Language reference, History of English
Length:
98 words

...power [ME] Like posse , power can be traced back to Latin posse ‘to be able’. Power corrupts got into the language through the quotation from Lord Acton: ‘Power tends to corrupt, and absolute power corrupts absolutely’ (letter to Bishop Mandell Creighton, 1887), although others had used it slightly earlier. Whoever the authorities or people in control are in a particular situation can be referred to as the powers that be , a phrase that comes from the Bible: ‘For there is no power but of God: the powers that be are ordained of God’ (Epistle to the...

## power Quick reference

### The Concise Oxford Dictionary of Mathematics (6 ed.)

Reference type:
Subject Reference
Current Version:
2021

...power When a real number a is raised to the index p to give a p , the result is a power of a , and p is often referred to as the power. The same index notation is used in other contexts, for example to give a power A p of a square matrix ( see power (of a matrix)) or a power g p of an element g in a multiplicative group. For details of how general powers of positive numbers are rigorously defined, see index...

## power Quick reference

### A Dictionary of Organizational Behaviour

Reference type:
Subject Reference
Current Version:
2019
Subject:
Length:
178 words

... The capacity to act or influence others to act in a certain way. There are many definitions or aspects of power that differ in their assumptions, such as whether or not one can hold or ‘possess’ power and whether power is a productive, enabling force (‘power to’) or a repressive one (‘power over’), and the extent to which it is an overt or covert force. The many theories of power make it difficult to define precisely, but there is common reference to the four faces of power, building on the work of Steven Lukes and Michel Foucault. These faces look at...

## power Quick reference

### A Dictionary of Critical Theory (2 ed.)

Reference type:
Subject Reference
Current Version:
2018

...states power takes, and do not constitute useful starting points for thinking about power, Rather, he said, power has to be understood as a form of positivity, a productive force in its own right, one that takes the form of a multiplicity of force relations immanent in a particular context in which they operate. Power is everywhere, Foucault famously said, not because it is invincible, but because it is produced from one moment to the next and comes from everywhere. Foucault offered five propositions in support of this way of seeing power: (1) power cannot be...

## power Quick reference

### A Dictionary of Sports Studies

Reference type:
Subject Reference
Current Version:
2010
Subject:
Social sciences, Society and culture
Length:
1,025 words

...and persuasion. Rather than working with the couplet power/resistance, it is surely important to see resistance as a form of power itself, as a response to say, domination, or in Russell's terms, to a particular form of power, say naked or traditional power. For if actors have some capacity to affect outcomes, they are exercising some degree of power. Lukes ( Power: A Radical View , 1974 ) has problematized simplistic formulations of the exercise of power and urged that a deeper study of power must recognize how, in complex and subtle ways, the...

## power (in mechanics) Quick reference

### The Concise Oxford Dictionary of Mathematics (6 ed.)

Reference type:
Subject Reference
Current Version:
2021

...power ( in mechanics ) The power associated with a force is the rate at which the force does work . The power P is given by P  =  F∙v , where v is the velocity of the point of application of the force F . The work done by the force during a certain time interval equals the integral of the power, with respect to t over the interval. Power has the dimensions ML 2 T −3 , and the SI unit of measurement is the watt...

## power Quick reference

### The Oxford Dictionary of Idioms (4 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Language reference
Length:
75 words

... power the corridors of power : see corridor . do someone or something a power of good be very beneficial to someone or something. informal more power to your elbow! said to encourage someone or express approval of their actions. ...

## power (symbol: P; unit: watt) Quick reference

### A Dictionary of Electronics and Electrical Engineering (5 ed.)

Reference type:
Subject Reference
Current Version:
2018

... ( symbol: P ; unit: watt ) The rate at which energy is expended or work is done. In a direct-current circuit or device the power developed is equal to VI , where V is the potential difference in volts and I the current in amperes. In an alternating-current circuit the power developed is equal to VI cosϕ, where V and I are the root-mean-square values of voltage and current and ϕ is the phase angle between them. Cosϕ is the power factor of the circuit or device and the apparent power is the product VI , measured in volt-amperes. The...

## power Quick reference

### A Dictionary of Gender Studies

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Sociology, Politics
Length:
103 words

...power The ability to exert influence and control in a given situation. Power can be economic, social, political, physical, psychological, externally applied, or internalized. Gender scholars of the 1970s and 1980s often regarded power as a top-down issue, leading to the oppression of women and homosexuals, for example. However, under the influence of the work of Michel Foucault , who described power as distributed and not one-directional, gender scholars from the 1990s placed greater emphasis on the power of disadvantaged people to resist their oppression, and...

## power Quick reference

### A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

...power The rate of doing work ; its units are watts (W) or, for example, kW, MW, GW. When an applied force F is moving at a velocity v (in the same direction as the force), the power produced is given by F × V...

## Power Reference library

### The Oxford Dictionary of Family Names of Ireland

Reference type:
Subject Reference
Current Version:
2021
Subject:
Names studies
Length:
615 words
Illustration(s):
1

...Power, son and heir of Pierce Power, 1611 in Irish Patent Rolls p. 168 (Kilballekilto, Waterford); Sir William Power otherwise Le Poer, 1615 in Irish Patent Rolls p. 270 (Kilbolan, Cork); Anne Walsh alias Power, widow of Thomas Power, 1623 in Irish Patent Rolls p. 571 (Currebothie, Waterford); Power and Poer, principal Irish names, 1660 in Census and Poll p. 340 (Barony of Cosmore and Cosbride, Waterford); John Power, lord baron, and Richard, David and Piers Power, esquires, 1660 in Census and Poll p. 343 (Curraghmore, Clonegann, Waterford); Power,...

## Power Reference library

### Brewer's Dictionary of Phrase & Fable (19 ed.)

Reference type:
Subject Reference
Current Version:
2013

...is taken from Romans 13:1 : ‘The powers that be are ordained of God.’ Power to the people The slogan of the black panthers from 1969 , subsequently adopted by other groups. It echoes the call of the Petrograd workers in the months before the Russian Revolution, ‘All power to the Soviets!’ Balance of power, The See under balance . Black Power See under black . Central Powers See under central . Corridors of power See under corridor . Flower power See under flower . More power to your elbow See under more . Thrones, Principalities and Powers See...

## power Quick reference

### A Dictionary of Chemical Engineering

Reference type:
Subject Reference
Current Version:
2014

...power The work done or energy transferred per unit time. In SI units, it is measured in watts (that is, joules per second). ...

## power ([Th]) Quick reference

### The Concise Oxford Dictionary of Archaeology (3 ed.)

Reference type:
Subject Reference
Current Version:
2021
Subject:
Archaeology
Length:
17 words

... [Th] Generalized symbolic capacity to make and make stick binding decisions on behalf of a...

## power Quick reference

### A Dictionary of Physics (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Physics
Length:
89 words

...power 1. (in physics) Symbol P . The rate at which work is done or energy is transferred. In SI units it is measured in watts (joules per second). See also horsepower . 2. (in mathematics) The number of times a quantity is multiplied; e.g. x 5 is the fifth power of x . A power series is one in which the power of the variable increases with each term, e.g. a 0 + a 1 x + a 2 x 2 + a 3 x 3 +…+ a n x n...

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