Earth can not, perhaps, be called pure water world, but 70% of the planet's surface is covered by water.Without it, life would be impossible.Moisture saturated air that we breathe, and our bodies are mostly made up of water.And measure the water content in the atmosphere is the air humidity.
What does such a thing?Water may be contained in air in the form of drops or water vapor.The water content in grams per 1m3 of air - it is an absolute humidity.However, the possible amount of water in the atmosphere depends on the temperature.The higher it is, the more can be moisture in the air.In order to somehow get around this relationship, it introduced the concept of relative humidity.
It refers to the ratio of the existing moisture to the maximum possible at the current temperature.Relative humidity shows what percentage of the maximum possible of the current humidity.If the current is 60%, it means that the air contains 60% of the maximum possible amount of steam at the current temperature.
for the measurement of water vapor in the atmosphere using special devices - psychrometers.The fact that the humidity of the air - an extremely important parameter, which affects directly the health and performance art.As already mentioned, in the human body contains a large amount of water, which is critical with respect to its content in the air.If the presence of moisture in the atmosphere is very different from normal, this negative impact on health.
If the ambient atmosphere is insufficient water content, the skin and mucous membranes of humans begin to dry.For a person normal humidity in the range of forty to sixty percent.This body works in optimum conditions for it.It should be noted that in the summer the air are moistened, but in the winter, especially in smokers, humidity may not exceed 15%.
reason is that the central heating system heats the room air, which means that it at an elevated temperature may be greater than the water vapor.But the water content in the air is not changed, and therefore the moisture content is reduced.The consequence of this will be increased fatigue and lowered immunity due to the dryness of the skin and mucous membranes.
Increased humidity has its negative sides.A person under similar conditions deteriorating evaporation of moisture through the skin into the body produces its surplus, which again leads to a deterioration of health.In addition, in areas with high humidity all the conditions for the breeding of harmful bacteria and mold, which can be a consequence of asthma and allergy.And the life of household appliances and furniture in these conditions is greatly reduced.
In the observation of nature determined that there is a change in humidity during the day, the so-called diurnal variation.In the process of observation of the seas it found that during the day the water vapor content in the atmosphere is one minimum and one maximum.The minimum is observed in the morning, a maximum of about thirteen or fourteen hours.This behavior is similar to the humidity in relation to the course of the temperature and the evaporation of water.
The data on humidity, the speed of change and the diurnal variation allow the use of these data for short-term weather forecasts.Thus, it is assumed, if the diurnal variation of temperature, humidity corresponds to the course, it can be expected that in the next 12-24 hours of weather caused by an anticyclone to continue.
humidity in the atmosphere is the human factor that has an impact on his health.And ensure optimum humidity in the room will allow for the long term to ensure the health and performance.
