A Simple Illumination Recorder

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  • 1 Stanford University, Calif., and U. S. Weather Bureau, San Francisco
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*Read at Pasedena Meeting, 1941. Considerable improvement in cells and equipment has been made during the past two years, but the present widespread interest in illumination measurements makes this article still timely.

*Read at Pasedena Meeting, 1941. Considerable improvement in cells and equipment has been made during the past two years, but the present widespread interest in illumination measurements makes this article still timely.

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