What is Thermography?
Infraed thermography is a non-destructive, nonintrusive, non contact mapping of thermal patterns on the surface of objects. It is usually used to diagnose thermal behaviour and thereby, to assess the performance of equipment and the integrity of materials, products and processes.

What is Infrared?
Infrared technology started in 1800 with William Herschel and a famous experiment that revealed the existence of the infrared radiation spectrum. For his experiment he used a prism that separated the various colours from blue to red. Using a mercury thermometer, he noted that the maximum elevation of temperature occured beyond the red band where no radiation was visible.

What is Emissivity?
Emissivity is a variable ratio of the total energy radiated by a given surface at a given temperature to the total energy radiated by a blackbody at the same temperature. Emissivity can be total, directional or hemispherical. Emissivity is a surface phenomenon depending on surface condition and composition. Smooth materials have lower emissivities than rough or corroded materials. Emissivity values range between 0 for a perfect reflector to 1.0 for a blackbody.