1 5 5

: " "

  1. #1
      nagwa_ahmed5
    Sep 2012
    30,482
    36

    " "




    " "




    ..

    5 1687 . " ". . .

    (4 1643- 31 1727) . 1687 . ȡ

    . () ѡ () ()

    ( ) : ( )










    " "




    .. ..

    1859. . : - ɻ. . . .

    12 1809 19 1882 . " "

    ( ) . 1838 . ɡ .

    . . 1859 ( ) .

    .












    " "




    1925 1926 .. ..

    :

    .. .. .. .. .. .. .. ! .. ..

    !

    : 60 .. 2,5 % !

    (20 1889 - 30 1945) . 1933 1945 1933 1945 1934 1945.

    1920 1921. 1923 .

    1933 . ( ) . 1939 ʡ . ߡ .

    1945 . 1945 . .

    .










    " "






    ..

    ..

    .. ..

    (6 1856 - 23 1939). . . .

    ֡


    ɡ .













    " "






    ( )

    () ...

    . ɡ 200 . . ϡ . . .. .

    ʡ . .

    (14 1879 18 1955) . ǡ . 1921 .



    : 1905


    (Special Relativity, ) ɡ ɡ " " 1887


    : 1916


    ( General relativity) 1916 ( ) .
    ʡ
    ( )











    " "





    ..
    ..

    ..

    " " 1543 150 ǡ ϡ ѡ

    (19 1473 24 1543) . " ". ֡ .

    .. . . 20 12 . . .

    ( )
    !! .. ( ) " "




  2. #2

    Mar 2012
    29,072
    1000

    : " "

    ..







  3. #3
      nagwa_ahmed5
    Sep 2012
    30,482
    36

    : " "




  4. #4

    Apr 2012
    ..
    15,970
    1000

    : " "

    ..: )))..

    ..

    .. : )))..

  5. #5
      nagwa_ahmed5
    Sep 2012
    30,482
    36

    : " "




  1. : 288
    : 06-03-2018, 11:40 AM
  2. : 152
    : 05-08-2018, 12:38 PM
  3. : 9
    : 01-29-2018, 10:17 AM
  4. " "
    nagwa_ahmed5
    : 2
    : 01-14-2013, 11:02 PM
  5. nagwa_ahmed5
    : 2
    : 12-23-2012, 10:00 PM

", , ", , ,