Richard Feynman was an American physicist (1918-1988) known for his contributions to quantum mechanics, particle physics, and his engaging teaching style. He made significant contributions to the development of quantum electrodynamics (QED), for which he was awarded the Nobel Prize in Physics in 1965. Feynman's Feynman diagrams became a fundamental tool in theoretical physics. He also played a crucial role in the investigation of the Space Shuttle Challenger disaster. Feynman was known for his exceptional ability to explain complex concepts in a simple and accessible manner, making him a popular lecturer and author. His books, such as "Surely You're Joking, Mr. Feynman!" and "The Feynman Lectures on Physics," have inspired generations of scientists and enthusiasts.