Action
Action describes energy summed up over the time a process lasts (time integral over energy). Its dimension is the same as that of an angular momentum.
- A phototube provides a voltage measurement which permits the calculation of the quantized action (Planck constant) of light. Also see photoelectric effect.
Read more about this topic: Measuring Instrument
Famous quotes containing the word action:
“The philosophy of action for action, power for the sake of power, had become an established orthodoxy. “Thou has conquered, O go-getting Babbitt.””
—Aldous Huxley (1894–1963)
“Let those who go home tell the same story of you:
Of action with a common purpose, action
None the less fruitful if neither you nor we
Know, until the moment after death
What is the fruit of action.”
—T.S. (Thomas Stearns)
“...a fixed aim furnishes us with a fixed measure, by which we can decide whether such or such an action proposed is worth trying for or not, and as aims must vary with the individual, the decisions of any two people as to the desirableness of an action may not be the same.”
—Anna C. Brackett (1836–1911)