On the Effective Humidity (1st Report)

[摘要] The water content of woods, charcoal or paper, etc., is said to be dependent upon the effective humidity which is defined by Dr. H. Hatakeyama and is mainly referring to the relative humidity. But the author, computing from the stand point of the adsorption by which the absorption may be effected, derived a formula containing the absolute and relative humidities in the form: (Ha)α×(Hr)β, WhereHa: absolute humidity, Hr: relative humidity, α, β: exponential coefficients characteristic of the substances and slightly dependent upon their temperature. This formula seems to explain satisfactorily the water content of various substances and therefore the various phenomena relating to fire-breaks, etc.

[学科分类] 大气科学