Spectroscope dating from the turn of the twentieth century, artwork. Analysis is being performed on sodium chloride (salt, NaCl). The specimen is bein

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Spectroscope dating from the turn of the twentieth century, artwork. Analysis is being performed on sodium chloride (salt, NaCl). The specimen is being heated strongly whilst a powerful lamp (left) is shone through it. This beam is then focused, and dispersed by a prism (right) to be displayed on a screen. The D line indicates the presence of sodium.

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Size: 5228px × 3373px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1900, 1900s, 19th, 20th, analysing, artwork, black--white, century, chemical, chemistry, chloride, equipment, experiment, flame, historical, history, illustration, laboratory, lamp, lens, monochrome, nacl, prism, salt, sodium, spectroscope, spectroscopy