Friday, August 26, 2016

Admitting visible light, rejecting infrared heat

The transparency of glass to visible light makes it the most common way to let light into a building. But because glass is also transparent to near-infrared radiation -- windows also let in heat, giving rise to the well-known greenhouse effect. A coating that blocks 90 per cent of the heat from sunlight could be used to develop smart windows, say scientists.

from Geochemistry News -- ScienceDaily

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