Hydrogen visible spectrum

Continnous and line emission spectra. From the top down The continuous visible spectrum the line emission spectra for sodium (Na). hydrogen (H). and mercury (Hg). 

In 1885, Johann Balmet a mathematician, derived the following relation for the wavelength of lines in the visible spectrum of hydrogen... 

FIGURE 1.10 (a) The visible spectrum, (b) The complete spectrum of atomic hydrogen. The spectral lines have been assigned to various groups called series, two of which are shown with their names. 

Fig. 17-3 The origin of the visible spectrum of hydrogen (not drawn to scale)...

Fig. 10.12 S imultaneous monitoring of the time-dependent UV/ visible spectrum at 441 nm (maximum of the catalyst extinction) and hydrogen consumption for the hydrogenation of COD with [Rh(DIOP)COD]BF4 Conditions 0.02 mmol precatalyst 0.33 mmol COD 20.0 mL methanol 25.0°C 1.013 bar total pressure.

Figure 2.1 Electronic orbitals and the resulting emission spectrum in the hydrogen atom, (a) Bohr orbitals of the hydrogen atom and the resulting spectral series, (b) emission spectrum of atomic hydrogen. The spectrum in (b) is calibrated in terms of wavenumber (P), which is reciprocal wavelength. The Balmer series, which consists of those transitions terminating on the second orbital, give rise to emission lines in the visible region of the spectrum. ( 1990 John Wiley Sons, Inc. Reprinted from Brady, 1990, by permission of the publisher.)...

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