Concept explainers
Thin-film window coatings for energy conservation and comfort Thin-film coatings are applied to eyeglasses, computer screens, and automobile instrument panels to reduce glare and to binocular and camera lenses to increase the amount of light transmitted. Thin-film coatings are also used to add color to architectural glass, to reduce surface friction, and to improve the energy efficiency of windows. Consider this latter application.
Figure 24.30 shows that over 50% of the
The actual thin film built for windows reflects about what percent of the incident infrared radiation at 1000 nm?
a. 10
b. 30
c. 50
d. 70
e. 90
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