About
Richard Feynman (1918–1988) was an American theoretical physicist known for his work in quantum electrodynamics, for which he shared the 1965 Nobel Prize in Physics. He developed the path integral formulation of quantum mechanics, Feynman diagrams for visualizing particle interactions, and made fundamental contributions to the theory of quantum computing. His gifts as an educator and communicator made him one of the most beloved scientists of the 20th century, known for books like Surely You're Joking, Mr. Feynman! and his celebrated Caltech lectures.
Key Contributions
- Developed quantum electrodynamics with Schwinger and Tomonaga, sharing the 1965 Nobel Prize in Physics
- Created Feynman diagrams, turning particle interactions into a visual and calculable language
- Introduced the path-integral formulation of quantum mechanics, giving physics another way to calculate and think about quantum behavior
- Proposed quantum simulation, a seed idea for quantum computing and later quantum-information research
- Made physics unusually teachable through The Feynman Lectures, public talks, and an insistence on first-principles understanding
- His Challenger O-ring testimony became a model of scientific clarity, though his public myth can overshadow collaborators and institutional context
Videos & Interviews
Richard Feynman: Can Machines Think?
Feynman discusses whether computers can truly think and the nature of machine intelligence
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Richard Feynman: Fun to Imagine
1983 BBC series where Feynman explains the physics behind everyday phenomena
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Richard Feynman: The Pleasure of Finding Things Out
1981 BBC Horizon interview covering childhood curiosity, Los Alamos, and the joy of discovery
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Leonard Susskind
In conversationTheoretical Physicist, Stanford
Susskind calls Feynman his friend — they did physics together without ever publishing a paper, and Feynman became convinced the two shared a temperament because both had fathers who taught them to use tools. In his TEDxCaltech talk Susskind recalls a mid-1980s dinner where, with Sidney Coleman, they argued with two philosophers of mind over 'Can a machine become a mind?', and Feynman demolished the jargon. What Susskind took from him was a rule: if you cannot explain something simply, you do not understand it.
youtube.com · ted.com
Brian Cox
InfluencedPhysicist & Science Communicator
Cox and Jeff Forshaw built The Quantum Universe on Feynman's path-integral picture, borrowing the device from QED: a particle as a crowd of little clocks, one for every route it could take, whose hands are added and squared to give a probability. It is the bolder choice for a popular book, starting from 'everything that can happen does happen' rather than from waves, and critics noted the book retreats to waves when the systems get harder. That tension is Feynman's own: the clearest picture is not always the one you can compute with.
Brian Cox and Jeff Forshaw, The Quantum Universe: Everything That Can Happen Does Happen (2011) · chadorzel.com
