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[領域]  不確定原理                         (題目相關領域)

[來源]  課本習題                           (課本習題、考古題、參考書...)

[題目]  An atom in an excited state has a lifetime of 1.2x10^-18sec,
        in a second excited state the lifetime is 2.3x10^-8sec.
        What is the uncertainty in energy for the photon emitted when
        an electron makes a transition between these two levels?

[瓶頸]
       答案是4.17x10^-8ev
       可是不知道怎麼開頭算...


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