Session titles and selected papers. Transparent Media for Advanced Window Applications. Principles & properties of heat mirror coatings for domestic windows, R N Howson. Industrial production of low emissivity coatings, M J Gainsbury. Preparation & properties of zinc oxide films formed by RF sputtering, C C Figgures & M G Hutchins. Optical property measurements on advanced glazing, J L Chevalier. Superglazing, U-value=0.9, P Robinson & J Littler. Forward scattering of insolation through transparent and translucent materials, B Norton et al. Optical Switching Films and Novel Materials for the Controlled Conversion of Solar Radiation. Electrochronic properties of tungsten oxide films, S M Christie & M G Hutchins. New functional window coatings for automotive applications, C G Granqvist. The physical properties of pyrolytically sprayed tin dioxide coatings, H Haitjema. Selective Absorber Surfaces, Durability and Service Lifetime Prediction. Selective solar absorber surfaces - present and future, J J Mason. Practical experience of using selective surfaces on mass wall collectors, D Clarke. Accelerated ageing of solar absorber surfaces: test methods and degradation mechanisms, P R Dolley & M G Hutchins. Durability testing and service lifetime prediction of solar energy materials, M Kohl & K Gindele. Innovative test procedure for assessment of the durability of solar collectors, U Frei & T Hauselmann. Measurement Techniques for Surface Characterization. Errors in integrating sphere measurements due to sphere geometry and sample texture, A Roos et al. Spectral measurement of the infrared reflectance, K Gindele & M Kohl.