The fact that solid sodium reacts with the moisture in the air to produce a faint glow has been known for years. The color of the light was said to be greenish and its intensity extremely low; however, no measurements had been made. In this article, a method is described for determining its intensity by means of a photoelectric cell. The determination of the spectrum of the light as obtained both by filters and spectrographically is described. The intensity was found to vary from 3.57 to 10.5 x 10-7 lumens per square inch of metal surface while the spectrum was found to consist of a band between 5000 Ao and 5300 Ao with a maximum at about 5100 Ao.
Proceedings of the Iowa Academy of Science
©1931 Iowa Academy of Science, Inc.
Bowie, R. M.
"The Color and Intensity of the Chemiluminescence of Solid Sodium,"
Proceedings of the Iowa Academy of Science, 38(1), 219-219.
Available at: https://scholarworks.uni.edu/pias/vol38/iss1/69