Determination of global absorptivity and emissivity of some opaque bulk materials using an integrating sphere calorimeter without ports. Submitted by drupal_dev on Mon, 03/15/2021 - 13:54 Publication Year 2007 Ochieng’, R.M.; Onyango, F.N.: Owino, A.J. Meas. Sci. Technol., 18, 2667-2672. (IOP Science Publishers)