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The conception of the atom of planetary type of E. Rutherford and based on classical mechanics still had some uncertainty and doubts, especially after the discovery in 1900 by Max Planck (Kiel 1858-1947 Göttingen) that between matter and radiation the energy would be exchanged in a quantity proportional to the frequency of the radiation and the electron rotates around the nucleus not like a planet around the sun, but on the basis of dynamical states (quantum states or discrete not continuous, based also on wave theory). Planck was a scientist who contributed in a decisive way to discover the structure of the atom so as to produce a kind of revolution in modern physics, and subsequent studies were strongly influenced by these theories, but at the same time it appeared the problem of how the energy produced from the atom was used and the numerous warnings to the peace of Planck remained practically unheard.

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Telephone: +39 338 1809310 Date: 23/04/2011 article n°: 1562 _____________________________________________________________________________________________________