termometriaLa Thermometry is responsible for the measurement of the temperature of bodies or systems. For this purpose, using the thermometer, which is an instrument that is based on the change of some property of the matter due to the effect of the heat. so is the thermometer of mercury and alcohol, which are based on dilation, thermocouples that should its operation to change the electrical conductivity, optical that detect the variation of the intensity of the emitted beam when it is reflected in a hot body.In order to build the thermometer is used the first zero of thermodynamics that says: "If a system is in thermal equilibrium with system B, is in thermal equilibrium also with system C, then the three sets A, B and C are in thermal equilibrium between Yes ".
