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The first three chapters of this monograph contain a discussion of the various factors involved in the loss of heat from the body: loss by radiation, conduction, convection and evaporation. The loss by evaporation the author assumes to be one fourth of the total heat loss. The conditions governing the loss of heat by evaporation from the skin the author studied by means of a specially constructed apparatus consisting in the main of a metal box heated by an electric bulb and covered with wet felt. The heat production of the bulb was known, the loss of water by evaporation measured by weighing. It was found that the evaporation was chiefly a function of the heat production. Variations of air temperature from 20.5 to 28.5 degrees and of relative humidity from 52 to 78 per cent did not seem to influence the loss. Knowing the total heat production and the
Hudtemperaturernes Betydning for Varmeafgiften hos Mennesket og Forsøg paa at beregne Varmeafgiften paa Grundlag af Hudtemperaturen. JAMA. 1937;108(10):833–834. doi:10.1001/jama.1937.02780100063033
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