Richard Feynman was an American theoretical physicist known for his work in quantum mechanics and particle physics. Born on May 11, 1918, he played a key role in the development of the quantum electrodynamics theory, which describes how light and matter interact. Feynman was awarded the Nobel Prize in Physics in 1965 for his contributions to the field. In addition to his scientific achievements, Feynman was a gifted teacher and communicator. He became famous for his ability to explain complex concepts in simple terms, often using engaging anecdotes. Feynman also contributed to the Manhattan Project, which developed the first atomic bomb during World War II. He passed away on February 15, 1988.