. . "'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. If radiation is isotropic, the radiance is independent of direction, so the direction should not be specified. If the radiation is directionally dependent, a standard name of upwelling or downwelling radiance should be chosen instead."@en . "2" . . . . . . . "2" . . . "2013-06-27 14:07:55.0" . . . "2013-06-27 14:07:55.0" . "true" . "isotropic_spectral_radiance_in_air"@en . . "deprecated"@en . "SDN:P07::CFSN0614" . "SDN:P07::CFSN0614" . "" . "SDN:P07::CFSN0614" .