Action (physics)
In physics, action is an attribute of the dynamics of a physical system. It 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. Action has the dimensions of •, and its SI unit is joule•second. This is the same units as angular momentum.
Read more about Action (physics): Introduction, History, Mathematical Definition, Euler–Lagrange Equations For The Action Integral
Famous quotes containing the word action:
“The beginning, middle, and end of the birth, growth, and perfection of whatever we behold is from contraries, by contraries, and to contraries; and whatever contrarity is, there is action and reaction, there is motion, diversity, multitude, and order, there are degrees, succession and vicissitude.”
—Giordano Bruno (1548–1600)