p45_035 - = hc E = 1240 eV nm 2 . 56 10 4 eV = 4 . 84 10 6...

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35. (a) From Eq. 41-29, we know that N 2 /N 1 = e E/kT .W eso lv efo r∆ E : E = kT ln N 1 N 2 =(8 . 62 × 10 5 eV / K)(2 . 7K) ln µ 1 0 . 25 0 . 25 =2 . 56 × 10 4 eV = 256 µ
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Unformatted text preview: = hc E = 1240 eV nm 2 . 56 10 4 eV = 4 . 84 10 6 nm = 4 . 84 mm ....
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