. Journal of agricultural research . f the United States. It is to be observed that the hottest time of dayis about 4 oclock—it varies with the season—instead of noon, and the ao TO 6^ ^O «2K? JO ^c? /o /o /^ ^ ^ 6 & /o /£> ie ^ s ,9 Ap /^ ^ ^ Fig. 3.—Average Utah thermograph records for various seasons. coldest time is just before sunrise, instead of at midnight, as is sometimesthought. Heat is being received most rapidly at noon, but the temper-ature will continue to rise until the heat received and the heat lost persecond are equal. As soon as the radiation rate exceeds the absorptionrat
. Journal of agricultural research . f the United States. It is to be observed that the hottest time of dayis about 4 oclock—it varies with the season—instead of noon, and the ao TO 6^ ^O «2K? JO ^c? /o /o /^ ^ ^ 6 & /o /£> ie ^ s ,9 Ap /^ ^ ^ Fig. 3.—Average Utah thermograph records for various seasons. coldest time is just before sunrise, instead of at midnight, as is sometimesthought. Heat is being received most rapidly at noon, but the temper-ature will continue to rise until the heat received and the heat lost persecond are equal. As soon as the radiation rate exceeds the absorptionrate the temperature will fall. Just after noon, even though the rate ofabsorption of heat is somewhat less than it was, yet it is still in excessof the radiation rate, and hence the net result is a rise in as this phenomenon is common to all localities, the thermographrecords for clear days are very much alike in shape the country convexity of the curve on the rising part or during the morning. Feb. 16,1920 Determination of Normal Temperatures 505 ky£-i}M£-Sa^y THl/ffSOAV
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1913
