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Brackett series

(hydrogen lines for electrons settling from n > 4 to n = 4)

The Brackett series is the set of hydrogen spectral lines emitted when an electron descends from an electron shell number n greater than 4 down to n = 4, or the analogous absorption lines when absorbed electromagnetic radiation makes the electron do the opposite. It is one of the hydrogen line series, such as the Lyman series and Balmer series and is named after Frederick Sumner Brackett.

Lines:

Formula for the wavelengths:

1/wavelength = RH ( 1/16 - 1/n² )

(Brackett,hydrogen,line series,lines,spectrum)
Further reading:
http://en.wikipedia.org/wiki/Hydrogen_spectral_series
WaveLFreqPhoton
Energy
  
1458nm206THz850meVbeginBrackett series
4050nm74THz306meVendBrackett series

Referenced by pages:
hydrogen (H)
spectral line

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