Prompt
Generate a realistic image of an elderly American physicist in a formal setting, possibly in front of a blackboard or surrounded by physics-related equipment. The man, likely in his 80s or 90s, has a gentle expression and is dressed in a suit and tie. He is seated in a chair, with one hand resting on the armrest and the other holding a pen or pencil. In the background, there are subtle hints of his work, such as equations on the blackboard or diagrams on the walls. The overall atmosphere is one of contemplation and intellectual curiosity. The style should be photorealistic, capturing the likeness of Keith A. Brueckner, an American theoretical physicist known for his work on nuclear many-body theory and laser fusion research.