How is the relative humidity of the air affected by warming it?
On clear days the rapid fall in the relative humidity is astonishing.
Thus in Mollendo the relative humidity during the winter of 1895 was 81 per cent; during the summer 78 per cent.
For the most healthful conditions the relative humidity should be from 40 per cent.
The cloudiness and relative humidity average high on western coasts, with the maximum in the colder season.
Most determinations of relative humidity are made with this kind of instrument.
It is seen that the relative humidity attains its maximum in winter, in the months of July and August, with a mean of 90 per cent.
How may the relative humidity of the air in a home be increased?
Gockel found a diminution of ionization with rise of relative humidity.
The iodide curve follows closely that of relative humidity, clouds, and rain; the thallium curve stands in no relation to it.
relative humidity n.
The ratio of the amount of water vapor in the air at a specific temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage.
|relative humidity |
The ratio of the actual amount of water vapor present in a volume of air at a given temperature to the maximum amount that the air could hold at that temperature, expressed as a percentage. Warm air can hold more water vapor than cool air, so a particular amount of water vapor will yield a lower relative humidity in warm air than it does in cool air. Compare absolute humidity.