Prompt
                                        
                                            "Create a realistic portrait of Sir George Gabriel Stokes, a British mathematician and physicist, sitting in a 19th-century study with a warm, golden lighting. He is wearing formal attire, including a suit and a tie, and has a gentle, introspective expression on his face. In the background, there are bookshelves filled with leather-bound books, and a few mathematical and scientific instruments, such as a prism and a lens, are scattered on his desk. Stokes is holding a pen in his hand, as if he has been working on a problem. The overall mood of the image should be one of quiet contemplation and intellectual curiosity."