TheOldstone Conference of 11 to 14 April 1949 was the third of three postwar conferences held to discuss quantum physics; arranged for theNational Academy of Sciences byJ. Robert Oppenheimer, who was again chairman. It followed theShelter Island Conference of 1947 and thePocono Conference of 1948. There were 24 participants; new participants wereRobert Christie,Freeman Dyson (whose writings explained Feynman’s ideas),George Placzek, andHideki Yukawa.^[1]

Held at Oldstone-on-the-Hudson inPeekskill, New York, the main talking-point wasRichard Feynman’s approach to quantum electrodynamics (QED); Feynman was now (at 30) the leading physicist of his generation.^[2]

• List of physics conferences

• Gribbin, John & Mary (1997).Richard Feynman: A Life in Science. England: Viking Press. p. 118.ISBN 0-670-87245-8.
• Metra, Jagdish (1994).The Beat of a Different Drum: The life and science of Richard Feynman. Oxford, England: Clarendon Press. pp. 278–279.ISBN 0-19-853948-7.

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