The variation of the spectral transmissivity of a 0.6-cm-thick glass window is as given in Fig. P21€“46. Determine the average transmissivity of this window for solar radiation (T ‰ˆ 5800 K) and radiation coming from surfaces at room temperature (T ‰ˆ 300 K). Also, determine the amount of solar radiation transmitted through the window for incident solar radiation of 650 W/m².

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0.92 λμm 0.3 3.