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In physics, action is an attribute of the dynamics of a physical system from which the equations of motion of the system can be derived through the principle of stationary action. Action is a mathematical functional which takes the trajectory, also called path or history, of the system as its argument and has a real number as its result. Generally, the action takes different values for different paths.

Mathematical formulation, via the Lagrangian (see Lagrangian mechanics:)

S=\int dt L(q,\dot q)


Wikipedia contributors. (2021, March 9). Action (physics). Wikipedia.

09:45 Monday 16 August 2021