title: Evaluation of nonisothermal semi-infinite cylinder with specularly reflecting walls as a blackbody source.
abstract: The fractional deviation from blackbody radiation due to wall emissivity modestly differing from unity and due to the presence of a temperature gradient (dT/dx) at the open end of a specularly reflecting semi-infinite cylinder of diameter D and end temperature T(1) is shown to be [Equation].
authors.forename: W R
authors.initials: WR
authors.lastname: Powell