| Adds another R4.7 to the total insulation value including the reflectivity performance of the aluminum facer. |
| Aluminum has a light reflectivity of over 80 percent, which has led to its wide use in lighting fixtures. |
| It has good electrical and thermal conductivities and high reflectivity to both heat and light. |
| When adjusting the integration time to the reflectivity independency, the measurement frequency changes corresponding to the reflectivity value. |
| For angles exceeding the critical angle, the refracted waves are evanescent and the reflectivity is very close to unity. |
| This application involves measuring the reflectivity of monochromatic x-rays as a function of the incident angle. |
