THE USE OF LASERS IN TECHNOLOGICAL METROLOGY, CONSTRUCTION AND CHEMICAL INDUSTRIES

Abstract

Infrared thermal rays of the spectrum with a length of S / >0.76 µm are invisible. As the temperature of a heated body is increased, its color changes, in which spectral energetic clarity, that is, waves of a certain length (clarity), quickly increases, as well as cumulative (integral) radiation increases significantly. The indicated properties of heated bodies are used to measure their temperature. Depending on these properties, radiation pyrometers are divided into quasimonochromatic (optical), spectral ratio (color), and full radiation (radiation) pyrometers. Theoretically, an absolute black body can be based on a phenomenon of light emission, in which the coefficient of light emission is taken to be equal to 1. If an object completely absorbs the energy of the light falling on it, this object is called an absolute black body. All real physical bodies have the ability to repel some of the Rays falling on them. Therefore, the absorption coefficient of light of an object is less than one, at the same time it depends on the nature of a particular object as well as its shallow States. In nature, there is no absolute black body, but in its objects that are close to the absolute black body.