Power

Power has many meanings, all of which imply control or force.

Contents 1 Physical and mathematical sciences 1.1 Physics 1.1.1 Optics 1.2 Mathematics 2 Social sciences 3 Art and culture 3.1 Paranormal, supernatural, and fiction 4 Other

Physical and mathematical sciences

Physics

• Power (physics) is the amount of work done or energy transferred per unit of time.

• Electric power generation is the process of converting any form of energy to electrical energy as in:
  • Power station
  • Nuclear power
  • Solar power
  • Wind power
  • Wave power
  • Tidal power
  • Geothermal power
  • Hydropower

Optics

Power has two meanings in optics:

• Power is used the same way as in other branches of physics
• A lens' optical power is the inverse of its focal length

Mathematics

• Exponentiation, for example 2³ is "two to the power of three"
• Statistical power, the probability that the test will reject a false null hypothesis
• Power of a method which, in the field of methodology, is inversely proportional to the generality of the method

Social sciences

• Power (sociology), the ability to impose one's will on others
  • Political power
  • Reserve power, a power that may be exercised by the head of state of a country in certain exceptional circumstances.
  • Power (international), the ability of national states to influence or control other states or regions
  • Power (communication), power in interpersonal communication
• Economic power has several meanings, including:
  • Purchasing power, the amount of goods and services a given amount of money can buy
  • Bargaining power or monopoly power, the ability to influence the setting of prices or wages

Art and culture

• Power (album), a 1986 album by the band Kansas
• The Power, a 1956 novel by Frank M. Robinson, made into a 1968 film
• Power (film), a 1986 movie
• Power (Ice T), a 1988 album by rapper Ice-T
• Powers (comics), a comic book series by Brian Michael Bendis and Mike Avon Oeming
• Power (play), a play written by Nick Dear

Paranormal, supernatural, and fiction

• Magic (paranormal) is sometimes referred to as a supernatural "power"
• Super-powers are special abilities of superheroes, or abilities specific to a character in a video or card game
• A deity is sometimes called "a Power"
• Powers are one of nine orders of angels in medieval angelology

Other

• IBM POWER, Performance Optimization With Enhanced RISC, an IBM microprocessor architecture
• Power, Montana, a town in the state of Montana
• Thomas Charles Power, one of the first two Senators from Montana.

The content of this page is retrieved from http://en.wikipedia.org/wiki/Power under GFDL