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October 29, 1938


JAMA. 1938;111(18):1647-1654. doi:10.1001/jama.1938.72790440007010

With the advent of an increasing use of artificially conditioned atmospheres in office buildings, auditoriums, department stores, apartment buildings and to some extent individual dwellings, it appears desirable to have some physical means of anticipating the reactions of a group of persons to a given set of air conditions. The individual may have facilities at his command to regulate indoor air conditions according to his personal needs or desires, but comfort air conditioning for a large group is successful only when satisfaction is obtained for the majority of occupants.

The physician, the layman, the engineer, in fact every one entrusted with the control of or called on to judge the suitability of air conditions, should understand the use of modern instruments designed to supplement the ordinary and very often inadequate "dry-bulb" thermometer and should be familiar with the optimal conditions for human comfort and efficiency as indicated by these more

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