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Period and periodic may refer to:

• Period (music)
• Period (rhetoric)
• Historical period
• Menstrual cycle, relating to the reproductive system
• full stop, also known as a period, that marks the end of a sentence

Science and Mathematics:

• Orbital period, in astronomy
• Periodic table, in chemistry
• Periodic table period, in chemistry
• Periodic acid, in chemistry
• Geologic period, in geology

In mathematics,

• • Periodic function
  • Recurring decimal
  • In a group, the period of an element a is the smallest integer n such that aⁿ = e, the identity.
• In physics, a period is an interval of time between the recurrence of phases in a vibration, etc.

This article is based on the article "Periods" from Wikipedia - the free encyclopedia created and edited by online user community. This article is distributed under the terms of GNU Free Documentation License. Here you find the list of authors of this article. The article can only edited within Wikipedia. Edit this article in Wikipedia.

The term Movement has a variety of different meanings related to motion:

• Physical movement between points in space ("A to B"). The amount of movement is called distance. Together with a direction you have a displacement. The rate of movement is the speed. Again, with the direction, you get the velocity. Active movement is called locomotion. See also under motion and transport.
• In biology movement refers to both intracellular movement and the movement of the organism or its parts and organs (See animal movement {floating, swimming, walking, flying,...} and plant movement {tropisms are movements in response to stimuli coming from one direction; geotropism, for example, is the response to gravity, while nastic movements are movements independent of the direction of stimuli; growth, developing buds, which swell, open up, and eventually fall off, are examples of nastic movements. Also, insectivorous plants move in response to the touch and chemical stimuli of captured insects.} ).
• In health care and medicine a bowel movement refers to the elimination of solid waste from the body.
• In a movie camera or projector, the term refers to the intermittent mechanism that transports the film.
• In aviation, the amount of traffic that an airport handles is described in movements per year, where one "movement" consists of a aircraft taking off or landing.
• In music, a movement is a large division of a larger composition. Symphonies are typically divided into four movements, for example, and concertos into three. Each movement has a distinct tempo and structure. Movement is also the title of New Order's 1981 debut album.
• In computer games, a movement is a special way the player can lead an alter ego through the virtual reality.
• In horology: for a clockwork, a clock, or a watch a movement is the device that is cutting time in equal portions
• In literature movement can also refer to the metrical or rhythmical properties of poetry.
• In linguistics and transformational grammar, syntactic movement refers to a process in which the deep structure of a linguistic expression is transformed to surface structure. One example of such movement is wh-movement.
• In politics, movement may refer to a political movement , e.g. the National Resistance Movement in Uganda, now simply refered to as "the Movement".
• Collected by G. I. Gurdjieff, Movements are sacred dances from Central Asian and African culture.
• Awareness Through Movement lessons are used by Feldenkrais method practitioners and students to discover new ways of using themselves with more ease, grace, and power.
• In various fields (history, sociology, culture studies) movement is the term commonly used to refer to a trend:
  • Art movement
  • Church Movement
  • Cultural movement
  • New religious movement
  • Social movement
  • The Movement in British poetry.

This article is based on the article "Movements" from Wikipedia - the free encyclopedia created and edited by online user community. This article is distributed under the terms of GNU Free Documentation License. Here you find the list of authors of this article. The article can only edited within Wikipedia. Edit this article in Wikipedia.