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词汇 Paschen series
释义

Definition of Paschen series in English:

Paschen series

nounˈpaʃ(ə)nˈpäSHən ˌsirēz
Physics

  • A series of lines in the infrared spectrum of atomic hydrogen, between 1.88 and 0.82 micrometres.

    〔物理〕帕刑系

    Example sentencesExamples
    • See a 1922 paper by Frederick Brackett comparing Bohr's formula for the hydrogen spectral series with the Paschen series and with two members of a new series.
    • The Paschen series describes transitions from a higher level down to n = 3.

Origin

1920s: named after L. C. H. Friedrich Paschen (1865–1947), German physicist.

Definition of Paschen series in US English:

Paschen series

nounˈpäSHən ˌsirēz
Physics

  • A series of lines in the infrared spectrum of atomic hydrogen, between 1.88 and 0.82 micrometers.

    〔物理〕帕刑系

    Example sentencesExamples
    • See a 1922 paper by Frederick Brackett comparing Bohr's formula for the hydrogen spectral series with the Paschen series and with two members of a new series.
    • The Paschen series describes transitions from a higher level down to n = 3.

Origin

1920s: named after L. C. H. Friedrich Paschen (1865–1947), German physicist.
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