Moisture or dampness in the air, as shown by an instrument called the
hygrometer, increases before rain, fog, or dew.
Before describing the hygrometer, a definition of a few of the terms
used in conjunction with the instrument will be found useful.
Moisture or dampness in the air, as shown by an instrument called the
hygrometer, increases before rain, fog, or dew.
Before describing the hygrometer, a definition of a few of the terms
used in conjunction with the instrument will be found useful.