The humidity is an indicator of amount of water vapor in the atmosphere. Weather and climate of the area depend on it. At change of humidity of people begins to feel differently.
Instruction
1. Every day in reports of a weather forecast report value of humidity as a percentage. It is an indicator of relative air humidity. Its value can influence health person. Comfortably he will feel at 40-60% of humidity. This parameter depends including on air temperature and influences moisture evaporation. It is measured by means of the device which is called a hygrometer. Relative the humidity is called because it is measured rather saturated steam, i.e. such steam which begins to turn back into water.
2. If air too damp, then when cooling it is condensed, i.e. fog, dew, droplets on a surface of objects will appear. In that case it is difficult for excess moisture to evaporate. Therefore in cold basements, for example, always damp. As a rule, is colder to the person at high humidity, than at the same temperature, but dry air. Therefore sea winters are endured hard, and in the middle of the continent low temperatures are less notable. The increased humidity leads to the fact that vapors of water begin to gather in drops and drop out on the earth in the form of a rain.
3. Too low humidity of air also creates discomfort. Moisture and is so not enough in air, and at high temperatures it begins to evaporate even more actively. The person sweats, at the expense of it the surface of a body is cooled. But water needs to be filled constantly, to drink much, otherwise the organism can overheat. But nevertheless it is easier to transfer such weather conditions, than a heat with the increased humidity. Moisture evaporation - normal process of an organism, and in such conditions this process is at a loss.
4. Knowledge of humidity of air is necessary for those who work with food, in agriculture and practically in any production. A certain value of humidity is maintained at one level in libraries, important archives, and its fluctuations can lead to damage of documents. The dampness is not transferred by fabrics, some building materials, food, etc.