The boring and done before "duality of light" routine raises more queaquest than it answers. Quantum theory is watertight mathematically but what if it's probabilistic take on reality is nothing more than an accurate model. Is light a photon? Is it an elsctromagnetic wave? Of what kind?
Finally I have found a short video that deals with these questions in a way that appears to be in touch with reality and retains the spirit of invention and curiosity that has left certain sectors of the physics community.