rydberg constant वाक्य
उदाहरण वाक्य
मोबाइल
- The electron relative atomic mass is an adjusted parameter in the CODATA set of fundamental physical constants, while the electron rest mass in kilograms is calculated from the values of the Planck constant, the fine structure constant and the Rydberg constant.
- The Rydberg constant represents the limiting value of the highest wavenumber ( the inverse wavelength ) of any photon that can be emitted from the hydrogen atom, or, alternatively, the wavenumber of the lowest-energy photon capable of ionizing the hydrogen atom from its ground state.
- Since the Bohr model is not perfectly accurate, due to fine structure, hyperfine splitting, and other such effects, the Rydberg constant R _ { \ infty } cannot be " directly " measured at very high accuracy from the atomic transition frequencies of hydrogen alone.
- In fact, Bohr's derivation of the Rydberg constant, as well as the concomitant agreement of Bohr's formula with experimentally observed spectral lines of the Paschen ( = 3 ) series, and successful theoretical prediction of other lines not yet observed, was one reason that his model was immediately accepted.
- Collection of the constants in this formula into a single constant gives a frequency equivalent to about 3 / 4 of the 13.6 eV ionization energy ( see Rydberg constant for hydrogen = 3.29 ?10 15 Hz ), with the final value of 2.47 ?10 15 Hz in good agreement with Moseley's empirically-derived value of 2.48 ?10 15 Hz.
- The Lyman-alpha line is most simply described by the { " n ", " m " } = { 1, 2 . . . } solutions to the empirical Rydberg formula for hydrogen's Lyman spectral series . ( The Lyman-alpha frequency is produced by multiplying the Rydberg frequency for the atomic mass of hydrogen, " R M " ( see Rydberg constant ), by a factor of ( ) 2 " ( ) 2 = . ) Empirically, the Rydberg equation is in turn modeled by the semi-classical Bohr model of the atom.
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