Abstract
SOME time ago a correspondent of NATURE (vol. xiii. p. 287) inquired for an explanation of the fact that while common salt (chloride of sodium) colours the flame of an ordinary spirit-lamp yellow, the same substance thrown upon a common coal fire gives rise to a blue flame. In the next number (p. 306) Dr. Schuster stated that the origin of the blue flame was still involved in mystery, and (if my memory is correct, for I have not the number at hand) that he and Prof. Schorlemmer had been engaged in an investigation of the same.
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HARDMAN, E. The Flame of Chloride of Sodium in a Common Coal Fire. Nature 14, 506–507 (1876). https://doi.org/10.1038/014506a0
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DOI: https://doi.org/10.1038/014506a0
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