最さい小しょう作さ用ようの原げん理り

expression, noun

principle of least action

A fundamental principle in physics stating that the path taken by a physical system is the one that minimizes the action.

• 最さい小しょう作さ用ようの原げん理りは、古こ典てん力りき学がくから場ばの理り論ろんまで幅はば広ひろく応おう用ようされる。

  The principle of least action is widely applied from classical mechanics to field theory.