Prompt
Generate a realistic image of an elderly American physicist in a professional setting, likely in an office or laboratory, surrounded by papers, books, and possibly some astrophysics or particle physics equipment. The man, Kenneth Greisen, is seated, with a thoughtful expression, wearing glasses and a suit, possibly with a Cornell University or University of Rochester insignia. In the background, a subtle hint of a blackboard with equations or a large map of cosmic rays could be visible, symbolizing his work on the Greisen–Zatsepin–Kuzmin limit and cosmic ray research. The style should be formal and reminiscent of mid-20th-century academic environments.
