Spectroscope, 1872. Instrument of the type developed

Spectroscope, 1872. Instrument of the type developed by Robert Bunsen (1811-1899) and Robert Kirchhoff (1824-1887) during the 1850s. Their work provided a precise tool to make use of Joseph von Fraunhofer's (1787-1826) observatians of dark lines in the solar spectrum (1814). The technique of chemical analysis through spectroscopy has become essential in both terrestrial and astronomical studies. From Spectrum Analysis by H. Schellen. (London, 1872)

1811-1899 1814 Analysis Astronomical Bunsen Chemical Developed Essential Kirchhoff Precise Provided Solar Spectroscope Spectroscopy Spectrum Studies Terrestrial

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