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.
In the mks system, permittivity Îµ and the dimensionless dielectric constant Îº are formally distinct and related by the permittivity of free space Îµ0; Îµ = ÎºÎµ0. In the centimetre-gram-second (cgs) system, the value of the permittivity of free space Îµ0 is chosen arbitrarily to be 1. Thus, the permittivity Îµ and the dielectric constant Îº in the cgs system are identical; both of them are dimensionless numbers.