PG PRAGMA: Difference between revisions

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(Created page with " More formally, 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.<ref name="mcgraw1">{{cite encyclopedia |last1=Goodman |first1=Bernard |title=Action |date=1993|encyclopedia=McGraw-Hill Encyclopaedia of Physics |publisher=McGraw-Hill |location=New York |editor=...")
 
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Latest revision as of 15:47, 27 January 2023


More formally, 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.<ref name="mcgraw1">Template:Cite encyclopedia</ref> Action has dimensions of energy × time or momentum × length, and its SI unit is joule-second (like the Planck constant h).<ref>Template:Cite encyclopedia</ref>