In the case of "Light" when it is considerd as an electromagnetic wave , this wave consist of an electric field and magnetic field oscillating all the time when the electric field is maximum the magnetic field is minimum and vice versa , my question is : what is the mechanism that create such oscillation and trasformation of electric field into magnetic field ?? my 2nd question is : an immobile charge is known to have only an electric field , can u give me an example about an immobile charge ??? , electron are never immobile iside an atome am I right ? so they do always have an electromagnetic field or we cant suppose that because the charge of an electron is cancelled by the charge of the proton ? ,and if not does an electron transmit electromagentic wave all the time , because of its immobility ? can you please help giving me a descent easy book that explain such things , a book for dummies with minimum mathematical equation and lots of physical explanations . Thank you.