Thermographic is the process of imaging in the mid-infrared range, and therefore using electromagnetic waves with a length of approx. 0.9 to 14 microns. It allows for the registration of the thermal radiation, emitted by the objects in the temperature range encountered in everyday conditions. This measurement does not require an external lighting investigated object with light source, but it still allows for accurate temperature measurement.
This method allows for contactless measurement and control of technological processes, where there are high temperatures. It is also possible to find the temperature anomalies, that would suggest malfunction of the tested object. Thermograms of the moving machine parts provide important information about their wear. Increased friction directly impacts on the increase of temperature, which is possible to observe using thermal imaging cameras.