Spectral radiative properties of panel glass and coatings are measured, like transmittance and reflectance. The coating influence on the panel behavior is presented. Material properties like index of refraction and the absorption coefficient are determined. Such determination takes place in the visible and near infrared region of the electromagnetic spectrum. The property determination is performed with transmittances and reflectances measurements in different wavelengths from 400 to 4000 nanometers. Total visible and solar transmittance is calculated, based on these data.
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