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principle of operation definition, principle of operation meaning | English dictionary. principle. n (Psychoanal) the idea that psychological processes and actions are governed by the gratification of needs. n the. the principle that energy and time or position and momentum, cannot both be accurately measured simultaneously.
A Principle (in physics) is a statement of the limits of intrinsic natural properties. It is different from a Law because it is not a statement of one type of observation but rather a statement of the patterns governing Laws and Theories. A Principle is a powerful statement; it can never be ignored; there are absolutely no exceptions to a Principle. A Rule can be ignored easily by changing conventions.