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English
Wikipedia has an article on: Power Most common English words: large « within « room « #263: power » mother » often » themselvesEtymology
< Middle English poer < Old French poer < Medieval Latin *potere, for Latin posse (“‘to be able’”); see potent.
Pronunciation
- (RP) IPA: /paʊə(ɹ)/, SAMPA: /paU@/
- (GenAm) IPA: /paʊɚ/, SAMPA: /paU@`/
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Audio (US) (file) - Rhymes: -aʊər
- Hyphenation: pow‧er
Noun
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Singular power |
Plural countable and uncountable; plural powers |
power (countable and uncountable; plural powers)
- (countable) capability or influence.
- 1749, Henry Fielding, The History of Tom Jones, a Foundling, Book III, chapter ii
- An incident which happened about this time will set the characters of these two lads more fairly before the discerning reader than is in the power of the longest dissertation.
- 1749, Henry Fielding, The History of Tom Jones, a Foundling, Book III, chapter iii
- Thwackum, on the contrary, maintained that the human mind, since the fall, was nothing but a sink of iniquity, till purified and redeemed by grace. ... The favourite phrase of the former, was the natural beauty of virtue; that of the latter, was the divine power of grace.
- 1998, Eckhart Tolle, The Power of Now
- Past and future obviously have no reality of their own. Just as the moon has no light of its own, but can only reflect the light of the sun, so are past and future only pale reflections of the light, power, and reality of the eternal present.
- 2005, Columbia Law Review, April
- In the face of expanding federal power, California in particular struggled to maintain control over its Chinese population.
- 1749, Henry Fielding, The History of Tom Jones, a Foundling, Book III, chapter ii
- (uncountable) Physical force or strength.
- He needed a lot of power to hit the ball out of the stadium.
- (uncountable) Electricity or a supply of electricity.
- After the pylons collapsed, this town was without power for a few days.
- (uncountable, physics) A measure of the rate of doing work or transferring energy.
- (uncountable, physics) A rate to magnify an optical image by a lens or mirror.
- We need a microscope with higher power.
- (Biblical) In Christian angelology, the fourth level of angels, ranked above archangels and below principalities
- (mathematics) A product of equal factors. Notation and usage: xn, read as "x to the power of n" or "x to the nth power", denotes x × x × ... × x, in which x appears n times, where n is called the exponent; the definition is extended to non-integer and complex exponents.
- (set theory) Cardinality.
- (statistics) The probability that a statistical test will reject the null hypothesis when the alternative hypothesis is true.
Usage notes
- Attributes: positive, negative, physical, mental, emotional, spiritual, sexual, coercive, natural, cultural, etc.
Synonyms
Terms synonymous with one or more senses of power (noun)- See also Wikisaurus:power
Antonyms
- impotence
- weakness
Derived terms
Terms derived from power (noun)
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Related terms
Verb
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Infinitive to power |
Third person singular powers |
Simple past powered |
Past participle powered |
Present participle powering |
to power (third-person singular simple present powers, present participle powering, simple past and past participle powered)
- (transitive) To provide power for (a mechanical or electronic device).
- This CD player is powered by batteries.
Derived terms
Translations
provide power for
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External links
- power at OneLook® Dictionary Search
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online.wsj.com
Fri, 23 Jul 2010 01:53:44 GMT+00:00
Wall Street Journal -The order has been placed by subsidiaries of Alta Wind Holdings, LLC, a wholly-owned subsidiary of Terra-Gen Power , LLC. -Terra-Gen's V90-3.0 MW purchase ... Terra-Gen Raises $1.2 Billion for Wind Farm New York Times (blog) Massive Calif. wind farm gets $1.2 billion in financing cnet vestas Climbs After Winning Largest Wind Turbine Order Bloomberg Reuters Africa - San Jose Mercury News
vanguardngr.com
unknown
Wed, 28 Jul 2010 16:34:21 GM
A non-governmental organisation, Initiative for Better . Power. Supply, IBPS, said it will mobilise Nigerians to the National Assembly to protest against the epileptic . power. supply in the country, if urgent steps are not taken to address ...
What is the most practical way to power operational amplifiers?
Q. We've been learning about op-amp circuits, and in the lab we power them with a power supply that has a range of 0-20 V, with two sources so that both polarities are available (we generally use +/- 12 volts). Obviously, this isn't very practical for most applications. Is there a way to power op-amp circuits without having to use two 9 volt batteries or an expensive power supply?
Asked by Lenny - Mon Apr 20 21:33:21 2009 - - 1 Answers - 0 Comments
A. You can use one power supply for both the plus and minus inputs. Run leads out of both the positive and negative inputs and put a 1k-ohm resistor on each. Feedback one polarity around one resistor so that it bypasses the resistor and goes right to the input. Check out how a common-mode voltage amplifier works.
Answered by Rick W - Mon Apr 20 22:26:54 2009
Q. We've been learning about op-amp circuits, and in the lab we power them with a power supply that has a range of 0-20 V, with two sources so that both polarities are available (we generally use +/- 12 volts). Obviously, this isn't very practical for most applications. Is there a way to power op-amp circuits without having to use two 9 volt batteries or an expensive power supply?
Asked by Lenny - Mon Apr 20 21:33:21 2009 - - 1 Answers - 0 Comments
A. You can use one power supply for both the plus and minus inputs. Run leads out of both the positive and negative inputs and put a 1k-ohm resistor on each. Feedback one polarity around one resistor so that it bypasses the resistor and goes right to the input. Check out how a common-mode voltage amplifier works.
Answered by Rick W - Mon Apr 20 22:26:54 2009
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