Author: admin

One of the main conditions for the normal course of all life processes in the human body is the principle of temperature constancy, in violation of which the development of severe, sometimes irreversible, changes is possible. A

Instruments for measuring air temperature The air temperature in the rooms is measured by thermometers, which are divided into measuring (alcohol, mercury, electric), designed to determine the temperature at the time of observation, and fixing (minimum and maximum), allowing

When measuring the air temperature, it is necessary to install the thermometer so that it is not affected by extraneous factors that can heat or cool it. During the measurement, do not hold the thermometer in

Subject to the force of gravity, the atmosphere exerts pressure on the surface of the earth and on all objects located on it. Barometric pressure is measured in millimeters by the height of the mercury column. Atmospheric pressure, capable of balancing

In units of the International System of Units (SI), the pressure is expressed in pascals (Pa). The normal level of atmospheric pressure during physical measurements is 101.325 kPa = 1013.25 hPa; 1 hPa is the pressure exerted

Water vapor enters the atmosphere mainly by the evaporation of water from the surface of the seas and oceans, a lesser role in this regard is played by lakes, rivers, soil. In inhabited premises, evaporation of

The August station psychrometer consists of two identical alcohol thermometers, the reservoir of one of which is wrapped with a piece of thin hygroscopic tissue, dipped at one end in a glass of distilled water at

Calculation of absolute humidity using the Assman psychrometer is carried out according to the Springs formula: K = f – 0.5 (t – t 1 ) • 755 The calculation of absolute humidity when working with the August

The hygienic significance of air movement consists, first of all, in that it promotes ventilation (aeration) of residential quarters and the buildings located there, leads to the very purification of the atmosphere from pollution. In addition, the wind provides the transfer of heat