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Document Type

Research

Abstract

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.

Publication Date

1931

Journal Title

Proceedings of the Iowa Academy of Science

Volume

38

Issue

1

First Page

219

Last Page

219

Copyright

© Copyright 1931 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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