Brijlal Subramanyam Optics Pdf Upd May 2026

I need to check if there are specific changes in the updated edition that are significant. Since I don't have the book, I might have to generalize. Maybe newer chapters on laser physics or holography, updated problems, alignment with current syllabi. Emphasize that the updated PDF retains the book's strengths while enhancing readability and usability in a digital format.