By Bob Berry
Recent I was asked this “What material has the best emissivity?”.
It is a tricky question to answer as first I need to figure out what is meant by “best”. Best could mean, best highest, or best lowest.
Emissivity it not just a material property, it is affected by other factors.
The object with the highest emissivity is called a “blackbody”, this would have an emissivity of 1. Blackbodies however are theoretical objects. The nearest true object to this would be a blackbody simulator, these are used for calibration and would have a typical emissivity of 0.996, so almost black (not to
Source:: Thermal Vision, World Class Thermal Imaging