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Activity may mean:
  • action
    Action (philosophy)

    In philosophy, action has developed into a sub-field called philosophy of action. Action is what an Agency can do.For example, throwing a ball is an instance of action; it involves an intention, a goal, and a bodily movement guided by the agent....
    , in general
  • physical activity
  • Activity, an alternative name for the game charades
    Charades

    Charades or charade is a word game guessing game. In the form most played today, it is an acting game in which one player acts out a word or phrase, often by pantomime similar-sounding words, and the other players guess the word or phrase....
  • Activity, a task
    Task

    In common language, a task is part of a set of actions which accomplish a job, problem or assignment. Task is a synonym for activity although the latter carries a connotation of being possibly longer duration....
    .
  • Activity, the ability of a piece to influence the game in chess
    Chess

    Chess is a recreational and competitive game played between two Player . Sometimes called Western chess or international chess to distinguish it from History of chess and other chess variants, the current form of the game emerged in Southern Europe during the second half of the 15th century after evolving from similar, much older...
  • Activity, the rate of a catalytic reaction, such as enzyme activity
    Enzyme assay

    Enzyme assays are laboratory methods for measuring enzyme activity. They are vital for the study of enzyme kinetics and enzyme inhibitor....
    , in physical chemistry
    Physical chemistry

    Physical chemistry is the application of physics to macroscopic, microscopic, atomic, subatomic, and particulate phenomena in chemical systems within the field of chemistry traditionally using the principles, practices and concepts of thermodynamics, quantum chemistry, statistical mechanics and kinetics....
     and enzymology
    Enzyme

    Enzymes are biomolecules that catalysis chemical reactions. Almost all enzymes are proteins. In enzymatic reactions, the molecules at the beginning of the process are called Substrate , and the enzyme converts them into different molecules, the products....
  • activity (chemistry)
    Activity (chemistry)

    In chemical thermodynamics activity is a measure of the ?effective concentration? of a species in a mixture. By convention, it is a dimensionless quantity....
    , the effective concentration of a solute for the purposes of mass action
  • activity (project management)
  • activity (radioactivity)
    Radioactive decay

    Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting ionizing particles and radiation. This decay, or loss of energy, results in an atom of one type, called the parent nuclide transforming to an atom of a different type, called the daughter nuclide....
    , the number of radioactive decays per second
  • activity (software engineering)
  • activity (soil mechanics)
  • activity diagram
    Activity diagram

    Activity diagrams are a loosely defined diagram technique for showing workflows of stepwise activities and actions, with support for choice, iteration and concurrency....
    , a diagram representing activities in UML
    Unified Modeling Language

    Unified Modeling Language is a standardized general-purpose modeling language in the field of software engineering.UML includes a set of graphical notation techniques to create abstract models of specific systems....
  • Activity, a board game
    Board game

    File:Game_of_life_board.jpgA board game is a game in which counters or pieces that are placed on, removed from, or moved across a "board" . As do other form of entertainment, board games can represent nearly any subject....
     by Piatnik
  • HMS Activity
    HMS Activity

    HMS Activity was an escort aircraft carrier that served with the Royal Navy of the United Kingdom during World War II. After the war, she was sold into merchant service as the MV Breconshire, serving for over twenty years until scrapped in 1967....
    , an aircraft carrier of the Royal Navy
    Royal Navy

    The Royal Navy of the United Kingdom is the oldest of the British Armed Forces . From the mid-18th century until well into the 20th century, it was the most powerful navy in the world, playing a key part in establishing the British Empire as the dominant world power from 1815 until the early 1940s....