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  1. #1
      Eiman
    Jul 2011
    -
    14,750

    1942

    .
    Fermi Szilard 1939 nuclear chain reaction 1942 1945. 1938 . 1919 . 1933 . . . () Bohr ( ) Meitner () Hahn () Strassmann ( ) Fission neutron. atom.( 1966 ). () 1934. . 1933 . ɡ binding energy ߡ ǡ . ɡ ǡ . ( ). 1934 . ǡ . . isotopes . . ɡ () Noddak . ա . . 1939 . ()Zinn _ radium beryllium ڡ . . () _ ɡ ѡ ɡ . . ѡ ѡ () . ( ).




    moderators ǡ . 1939 ( ) heavy water . ( ) H2O deuterium . ɡ . . . ɡ ݡ . . . . ( ) ȡ lattice . ϡ . . .

    ɡ . . 2/8/1939 ( ) . () . 1/9/1939 6000 . 1940 ʡ piles ( ) ʡ . ѡ ɡ 1942 ( ) metallurgy laboratory . 6/1942 . 1942 . 2/2/1942 ɡ .





    1945 . . . 8/5/1945 .
    ɡ . 1950. ѡ . ( ). ( ) 1955 . 1964.
    .......

  2. #2

    Aug 2011
    -
    2,565

    : 1942

    Thank you so much
    ..

  3. #3

    Jul 2011
    -
    1,260

    : 1942






  4. #4
    Super Moderator
    Mar 2012
    11,190

    : 1942

    refresh
    refresh


  5. #5

    Jul 2012
    5,302

    : 1942





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