esult, because the in- ture of almost incredible quantities of energy, or do we think we substitute for Pouillet’s), that the direct heat of the sun strument as soon as it is warmed commences to radiate the of a drizzly day as perhaps calling for a greater exertion of on 1 square foot: in March is… … 12 tons each to remove it, and these, at an average length of is much greater than that of the computed actual steam pow- THE PYRHELIOMETER, 30 feet to thecar, would make 6 trains, each reaching in one er of the whole world. Upon the surface of the whole earth continuous line of cars across the…
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