I am currently a Japanese graduate student in Chemistry department in a Japanese college. I have been studying photochemistry, and I have come to realize that my lack of understanding for physics is making me unable to draw out my full potential in my ability to do good research. However, I am already a graduate student. To tell a little more, I am actually entering the PhD. course starting October (I am skipping half a grade of masters degree for this) and I believe I am too late to start studying physics (mainly quantum physics). At the same time, I feel the need to study the fundamental aspect and the meaning behind all these concepts that I would usually happen to "pretend that I know". My question is, is there an effective way to study physics in any way possible (taking class, study alone, start things over, etc.)? Or should I just forget and continue on with my chemistry career without having any background in physics, given the situation I am in?