Scientist or researcher
Stanislaw Ulam
1951-01-01year known, day not recorded
Mathematician at Los Alamos who, with Edward Teller, devised the Teller-Ulam design that made the hydrogen bomb feasible (1951). Also pioneered the Monte Carlo method and the nuclear-pulse propulsion idea behind Project Orion.
In neither threadRuled on 3 September 2026 as belonging to NEITHER thread, by reading this entity's record rather than by a term search. It is on this map through the nuclear-weapons laboratories. AN EMPTY SUBJECT IS A RULING, NOT A GAP - a missing field would have meant nobody had looked.
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co-devised the Teller-Ulam hydrogen-bomb design (1951)Wikipedia: Edward Teller
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the Los Alamos mathematician behind the Teller-Ulam design and Monte Carlo methodWikipedia: Stanislaw Ulam