Prompt
Create a portrait image of Sir William Henry Bragg, a renowned British physicist and chemist, sitting in a dignified pose, wearing formal attire, with a gentle smile, and holding a book or a scientific instrument, such as a crystal model or an X-ray machine component, in a classic, realistic style, reflecting his contributions to X-ray crystallography and physics, with a background that suggests a 19th or early 20th-century academic setting.