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These variations between the two bands depend on emissivity and reflectivity of the materials that make up the target and/or background.
When polished, silver has the highest-known reflectivity of visible light.
Light reflectivity is another key performance area.
This application involves measuring the reflectivity of monochromatic x-rays as a function of the incident angle.
Aluminum has a light reflectivity of over 80 percent, which has led to its wide use in lighting fixtures.
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