Quotation from: General Science

Written by: Bertha M. Clark


The likelihood of rain or frost is often determined by temperature and
humidity. If the air is near saturation and the temperature is
falling, it is safe to predict bad weather, because the fall of
temperature will probably cause rapid condensation, and hence rain.
If, however, the air is not near the saturation point, a fall in
temperature will not necessarily produce bad weather.


The measurement of humidity is of far wider importance than the mere
forecasting of local weather conditions. The close relation between
humidity and health has led many institutions, such as hospitals,
schools, and factories, to regulate the humidity of the atmosphere as
carefully as they do the temperature. Too great humidity is
enervating, and not conducive to either mental or physical exertion;
on the other hand, too dry air is equally harmful. In summer the
humidity conditions cannot be well regulated, but in winter, when
houses are artificially heated, the humidity of a room can be
increased by placing pans of water near the registers or on radiators.

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