Everybody knows that the nucleus attracts the electron by the Coulomb discovered electric attraction force: F = k / r2, which means the further is the electron from the nucleus r, the weaker is the attraction force. On the other hand, those familiar with the classic radio wave theory know that the electrons interact with their nucleus as if they would be connected by a spring. The spring attracts the bob stronger the greater is the displacement x: F = -kx. This kind of force allows the radio waves to force harmonic oscillations of electrons. If the radio wave model is right, the electron can cross the atom along its diameter likewise an object via the Earth over a tunnel -- it will experience to gravity in the center of the Earth. This contradicts to the first view, which tells that the attraction must be infinite in the center. Am I missing something?