| Date | Text | |
|---|---|---|
13 Apr 1909
Mervyn Hugh Cowie |
birth Mervyn Hugh Cowie Born 13 Apr 1909; died 19 Jul 1996 at age 87. British wildlife conservationist who was the founder and, for 20 years, director of Kenya's Royal National Parks; he also assisted in the development of parks and tourism throughout East Africa and was appointed CBE in 1960. |
|
13 Apr 1909
Stanislaw M. Ulam |
birth Stanislaw M. Ulam Born 13 Apr 1909; died 13 May 1984 at age 75. Polish-American mathematician who played a major role in the development of the hydrogen bomb at Los Alamos. He solved the problem of how to initiate fusion in the hydrogen bomb by suggesting that compression was essential to explosion and that shock waves from a fission bomb could produce the compression needed. He further suggested that careful design could focus mechanical shock waves in such a way that they would promote rapid burning of the fusion fuel. Ulam, with J.C. Everett, also proposed the "Orion" plan for nuclear propulsion of space vehicles. While Ulam was at Los Alamos, he developed "Monte-Carlo method" which searched for solutions to mathematical problems using a statistical sampling method with random numbers. |
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13 Apr 1909
Stanislaw Ulam |
birth Stanislaw Ulam Stanislaw Ulam (died 1984), Polish American mathematician. |
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