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“Are a principle and a phenomenon the same thing? The answer is no”
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“A technology is built upon some principle, ‘some method of the thing,’ that constitutes the base of idea of its working; this principle in turn exploits some effect(Phenomenon) (or several) to do this. Principle and phenomenon are different.”
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That certain objects—pendulums or quartz crystals—oscillate at a steady given frequency is a phenomenon.
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Using this phenomenon for time keeping constitutes a principle, and yields from this a clock.
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A principle is the idea of use of a phenomenon for some purpose and it exists very much in the world of humans