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  1. #1
      Eiman
    Jul 2011
    -
    14,750


    ( : Ultraviolet ) . 400 10 ѡ 3 eV 124 eV.

    ӡ . ( ) ǡ . ӡ .


    . .





    . 1801 (: Johann Wilhelm Ritter) ɡ - - " " " " . " " . . 200 ɡ 1893




    (Ultra Violet). .




    (ISO-DIS-21348)


    UVA 400 .320 . 3.103.94 eV
    NUV 400 .300 . 3.104.13 eV
    B UVB 320 .280 . 3.944.43 eV
    Middle MUV 300 .200 . 4.136.20 eV
    C UVC 280 .100 . 4.4312.4 eV
    Far FUV 200 .122 . 6.2010.2 eV
    Vacuum VUV 200 .10 . 6.20124 eV
    Extreme EUV 121 .10 . 10.2124 eV

    (photolithography) (DUV Deep UV) 300 . ɡ . 150200 ɡ .




    ( ) . " " (: UV light). ϡ 400 . " " "blacklight blue" "BLB" ("bug zapper" blacklight "BL") . 368 371 . (SrB4O7F:Eu2+) (SrB4O7:Eu2+) 350 353 . (BaSi2O5:Pb+). 365 ..

    ɡ "UVA". UVB UVC DNA . ɡ ӡ .

    . . ʡ ( 0.1% ) . ǡ . ( ) . .

    ǡ . ɡ . (Black Light) BL .

    .




    , , 99% UVA. ( ).

    , . 90% 350 , 90% 300 .

    200 , 200 , . 150-200 . 200 . . (circular dichroism spectrometer) .

    Extreme UV : 30 ( ), . EUV/XUV (He+) 30.4 . , 50% . . .







    (UVB) . . ( ), . .
    , (UVB)




    (UVB) . . ( ) . . . ڡ (UVA). .




    , . (UVA) psoralens (PUVA treatment). (UVB) .




    (UVB) . ѡ . ( ) 92% .

    UVC , , .




    . , . Matsumura and Ananthaswamy 2004

    UVA UVB UVC . UVA UVB


    .

    UVA , DNA. (sunscreen) UVB . . .

    UVB UVA . ϡ . "AA" "CC" DNA . , , . UVA ( ) UVB . . UVB UVA , (Titanium dioxide ) UVA (Phlebodium aureum).




    UVB , , , UVC, ( ) ʡ . , , UVA , ( ) . .
    .......

  2. #2
    Super Moderator
    Mar 2012
    11,190

    :

    thank u Eiman


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