Prompt
Create a realistic portrait of John Ambrose Fleming, a British engineer, physicist, and inventor, sitting in a study with a vacuum tube (thermionic valve) and other electrical components nearby, wearing formal attire and holding a book, possibly "The Principles of Electric Wave Telegraphy" or "The Thermionic Valve and its Developments in Wireless Telegraphy", with a subtle background that hints at his connection to radio technology and electronics, in a style that reflects his Victorian-era upbringing and early 20th-century achievements.