Spectroscope, 1900

Spectroscope, 1900

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Credit: SCIENCE PHOTO LIBRARY

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

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