Why do electrons around nucleus radiate light according to classical physics As I navigate through physics stackexchange, I noticed Electron model under Maxwell's theory.
Electrons radiate light when revolving around nucleus? Why is it so obvious?
Note that I do not know anything about quantum mechanics - and I just want classical stories.
 A: Because there is a changing configuration of charges with time, a time-dependent dipole moment. The electron's field is coming from a different center at different times, so that the field is oscillating in magnitude with a period the orbital period of the electron. When you have an oscillation of electric fields, it sets up oscillations of the entire electromagnetic field which goes out at the speed of light, and this is the radiation.
A: Any accelerated lectric charge radiates energy (bremsstrahlung). A circular orbit is accelerated (a=V^2/R) so the electron should radiates its energy.
Rem: quantum mechanics does not explain the stability of the electron orbit because the Hamiltonian does not take into account the electromagnetic fields.One has to study the quantum electrodynamics to get the full picture right. 
A: First of all we all should know the meaning of the phrase "the electron is accelerating." It does not mean that $a=\mathrm{d}v/\mathrm{d}t$. The accelerating electron means that the electron is changing its electric field.  Obviously no electromagnetic radiations will be produced during orbital motion of the electron because the electron doesn't radiate during orbital motion.  Radiation will be emitted or absorbed only during transition between the energy states.
