Hi all, it has been stated that "the classical model of the atom is unstable because, according to classical electrodynamics, any bound electron must spiral into the nucleus, emitting radiation." It has also been stated, even in QM, that "you can use a frame of reference in which the nucleus is at rest, because it is has so much more mass than the electron." Both statements contradict each other because, if the nucleus is at rest, the all it causes is a Coulomb field. Which means, we get stable, Keplerian orbits. No collapse! I don't accept the usual explanations based on calculations of the "emitted radiative power" and conservation of energy. Because they don't say what force acts on the electron, other than Coulomb. Any help?