| For angles exceeding the critical angle, the refracted waves are evanescent and the reflectivity is very close to unity. |
| This is because metal performs well when it comes to both emissivity and solar reflectivity. |
| Because it has a tacky surface, it attracts dust, which reduces its reflectivity somewhat. |
| While coatings are durable, they do wear and their reflectivity decreases with age. |
| Aluminum has a light reflectivity of over 80 percent, which has led to its wide use in lighting fixtures. |
| Unit 3B, observed in the western Armorican transitional zone, is a seismic unit with low reflectivity. |
