Light from oscillating electric and magnetic fields Here’s a pretty weird question:
Is it possible to create light out of oscillating electric and magnetic fields?
That is if I oscillate an electric field in a direction that is orthogonal to the oscillating magnetic field, will this create light?

This question is purely theoretical and hypothetical. An answer may or may not exist. But I just wanted to know whether this is even possible with our current physics or maybe physics doesn’t allow this to happen at all. I do not know what the setup would be for this assuming it’s possible. 
 A: I think there should be an interplay between E and B field's changes in space and time. There should be a correlation between this two. The factor is not only the oscillating field but their variation (just like any normal wave equation). As you see that the potentials $\phi$ and $\bar{A}$ are just time and space component of four vector, $A^{\mu}$. So these E and B fields are the just different reflection of same four vector or same physics (Electromagnetism). 
A: 
That is if I oscillate an electric field in a direction that is orthogonal to the oscillating magnetic field, will this create light?

How a time varying electric or a magnetic field should be created?  


*

*This is possible by a redistribution of charges ( applying an external electric field). The best example will be the oscillation of electrons in an antenna rod or any wire. As a result of the accelerated electrons they emit photons. 

*Applying an external magnetic field, the involved subatomic particles get aligned with their magnetic dipole moments. During the relaxation they emit EM radiation too. 

*Running electrons in curved paths - for example applying a magnetic field non parallel to the direction of movement, electrons will loose their kinetic energy, emit light and came to a standstill.
So however you induce an oscillating electric or magnetic field, you will influence some subatomic particles of an influenced body and follow one of the above scenarios. Or could one give different examples? The emission of light aka EM radiation is always the result of manipulation of subatomic particles. No radiation without materialistic sources. 
