Annals of the Astrophysical Observatory of the Smithsonian Institution (1900)
Washington : Government printing office · leaf 116
s to solar radiation and ad¬ justed the flow of water until the galvanometer remained at ceivers and the distilled water entering the instrument at the same temperature, we used a 50-gallon drum as a source the open circuit zero. Thus the two streams of water were of water for the water bath. A… … Figure 4. — Cross-sectional diagram of standard water-flow pyrheliometer. (For explanation, see text.) Water currents of approximately 50 cc. per minute in each circulated some of the water through the water bath. The branch of the pyrheliometer were found to give good results, distilled water…
Infrared spectra · Solar radiation
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