01067nas a2200121   4500008004100000050001400041245004500055210004300100300001200143520068700155100002500842856007800867       1995                        eng d  aLBL-3689100aAdvances in Window Technology: 1973-19930 aAdvances in Window Technology 19731993  a339-3823 a<p>Until the 1970s, the thermal performance of windows and other fenestration technologies was rarely of interest to manufacturers, designers, and scientists. Since then, however, a significant research and industry effort has focused on better understanding window thermal and optical behavior, how windows influence building energy patterns, and on the development of advanced products. This chapter explains how fenestration technologies can make a positive impact on building energy flows, what physical phenomena govern window heat and light transfer, what new products have been developed, and what new products are currently the subject of international research efforts.</p>1 aArasteh, Dariush, K.  uhttps://facades.lbl.gov/publications/advances-window-technology-1973-1993