Robuta

https://uwaterloo.ca/molecular-beam-epitaxy/facilities/epi-growth-and-monitoring/reflectivity-and-reflectance-corrected-pyrometry
Reflectance is the fraction of incident electromagnetic power that is reflected at an interface.
molecular beam epitaxyresearch groupreflectivityreflectancepyrometry
https://blog.c3data.com/page/2
Compliance to Quality specifications like AMS2750 in the heat treatment world is difficult. Come here for content aimed at helping you comply. (2)
pyrometrypost