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  1. #1

    30 - 01 - 2007
    20

    .. .. !!

    ..

    .. :
    :
    :



  2. #2

    14 - 02 - 2007
    25




     :
    : ϡ .
    LASER :
    Light Amplification by Simulated Emission Radiation



    () :



    ɡ ground state excited state. .

    ( ) .


    :

    monochromatic . .
    coherent .
    directional .

    stimulated emission .








     :
    ɡ . He-Ne . :
    solid-state laser ruby neodymium: yttrium-aluminum TAG .
    Gas laser .
    Excimer laser .
    Dye laser rhodamine 6G .
    Semiconductor laser .

     :
    . .





    Class I: .
    :Class IA 4mW.

    Class II: 1mW.

    :Class IIIA 1-5mW . .

    :Class IIIB .

    Class IV: 500mW 10 J/cm2 .

     :
    . .
    LIDAR . ʡ .

    .. ǡ ɡ .
    .. . ɡ .

  3. #3

    14 - 02 - 2007
    25





    . ( ) 1925 .
    . ( ) . 25% .

    :
    1- ء .
    2- .




     :

    :
    (6-8 " " 3-4 ) 6 . .
    .

    :
    ǡ . ( 1000 \).
    8-10 ϡ .



    :
    ݡ :

     .
     .
     .

    :
    (100%) ֡ .

     :


    :
    10-11 . DNA . 3-4 . 1% . 14-16 0.5%

    :
    . . 15 . . .






    http://www.sehha.com/diseases/blood/Thalassemia1.htm



    http://www.werathah.com/blood/thala.htm

  4. #4

    14 - 02 - 2007
    25

    ...

    ...

    ...

  5. #5

    29 - 03 - 2006
    4,441




    2006-2007

















    :
    :



    . . .



    :


    100 100 ߡ . . .
    ɡ ground state excited state. .


    .
    ( ) .

    Absorbing Energy
    .


    . .

    .
    ().
    . () .
    ( ) .


    .
    light amplification by stimulated emission of radiation .

    . pumping . . population inversion .
    .
    .
    ( ) . .


    ( )

    :
    monochromatic . .
    coherent .
    directional .
    stimulated emission .
    ruby laser .
    Ruby Laser
    90%. .






    solid-state laser ruby neodymium:yttrium-aluminum TAG .
    Gas laser .
    Excimer laser .
    Dye laser rhodamine 6G .
    Semiconductor laser .


    . .
    Class I .
    Class IA 4mW.
    Class II 1mW.
    Class IIIA 1-5mW . .
    Class IIIB .
    Class IV 500mW 10 J/cm2 .




    , .





    (nm)
    Argon fluoride (UV) 193
    Krypton fluoride (UV) 248
    Xenon chloride (UV) 308
    Nitrogen (UV) 337
    Argon (blue) 488
    Argon (green) 514
    Helium neon (green) 543
    Helium neon (red) 633
    Rhodamine 6G dye (tunable) 570-650
    Ruby (CrAlO3) (red) 694
    Nd:Yag (NIR) 1064
    Carbon dioxide (FIR) 10600





    http://www.hazemsakeek.com/QandA/Laser/Laser.htm

  6. #6

    14 - 02 - 2007
    25

    ...






    " " .

    1971 .

    .

    . .. .. .. .

    , : .

    .

    " : : ѡ " " ѡ " (1) " .

    " " " " " (4) " .

    .. .

    :

    " " " " .. .. ..

    .. .

    " " .. " " .. 1987 ..

    " " " .. ϡ " .



    :

    " " " .. ".

    " " (" " ") .

    " " .. ɡ " (2) " .

    :

    " " .. .

    .

    " (3) " : ѡ .
    :

    :

    -- " " .

    .. :

    :





    :



    .

    ɡ 6

    : : .

    : : ѡ .

    : : .

    : : .......

    .. .

    : ߡ .. .. " .. " " (4) " .

    .

    : " (5) " .

    :

    .. .. .. .

    .. .. 1887 1959 .. "6(6)".

    400 .

    " " .

    ѡ ѡ .

    : .. : ϡ ǡ .. .. .























    http://www.uaeweb.com/forums/showthread.php?t=18089

  7. #7

    27 - 09 - 2006
    158







  1. 88 :
    : 7
    : 2010-07-01, 22:29
  2. 2010 ( )
    rayo0oma :
    : 62
    : 2010-06-26, 02:06
  3. ........
    && :
    : 4
    : 2009-10-28, 00:30
  4. : 116
    : 2009-10-05, 20:46

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