Adequate Theory of Oscillator: A Prelude to Verification of Classical Mechanics, Part 1

In the paper, the adequate theory of oscillator is presented, being a sort of prelude to verification of the classical theory of mechanics. The developed theory is based on properly understood the notion of energy, on quantum value changes of its determined measures (potentials), as well as of such change stypes of sites of the total energetic states which present the essence of the true principle of energy conservation. General characteristics of classical mechanics is presented by exemplification of artifacts of classical theory of oscillator, energetic aspects of its motion, kinetics of the body in harmonic motion, and finely a new adequate theory of oscillator. This is the first part of the theory