Title
Spectroscope, 1872
Caption
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).
Date
1872
Credit line
Photo12/Ann Ronan Picture Library
Reference
ARP07102_390006444
License type
Rights managed
Available size
25,2Mb (1,8Mb) / 11,8in x 8,3in / 3543 x 2490 (300dpi)