American theoretical physicist (1918-1988) whose work in quantum electrodynamics earned him the Nobel Prize in Physics in 1965; he is often credited for introducing the concept of nanotechnology. Fantastic ballpoint signature, "Richard P. Feynman,” with one of his famous 'Feynman diagrams' below, on an off-white 4.5 x 3 card bearing an affixed newspaper photo. In fine condition. Feynman diagrams, named after their inventor, are pictorial representations of the mathematical expressions describing the behavior of subatomic particles. A superb example of a decidedly scarce autograph.
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