Contemporary Examples. 1  He campaigned and governed in poetry, and we are all the richer for it. 2  Its essays, criticism, reportage, and poetry are not âproduct.â. 3  Laskey, who earned a degree in psychology, enjoys painting and poetry. 4  poetry would be too obvious, too âportrait of the artist as a young nuisanceâ.
Low emissivity - Definition. 1  Emissivity is the value given to materials based on the ratio of heat emitted compared to a perfect blackbody, on a scale from zero to one. A blackbody would have an emissivity of 1 and a perfect reflector would have a value of 0.
absorptivity. n. 1. (General Physics) physics a measure of the ability of a material to absorb radiation, equal to the internal absorptance of a homogeneous layer of the material under conditions in which the path of the radiation has unit length and the boundaries of the layer have no influence.