a diorama of an art exhibition

in a cabin, under the pepper tree, down by the sea

Saturday

Pyrheliometers and Measurements booklet from 1931




[published November 1931]

[This science booklet offers descriptions of various Pyrheliometers and auxiliary apparatus employed in measuring the intensity of solar radiation, with instructions for the care and for the reduction and use of the records. It was published by the United States Department of Agriculture: Weather Bureau, Washington, D.C. in 1931]

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musée 16