Bright spots caused by specular reflection should be avoided.
Additional Information: Specularity can be determined by relative specular reflectance measurements. Under a given lighting configuration, the reflectance of a highly reflective reference surface is taken to be 100 percent, and the reflectance of the surface being evaluated is compared with respect to this reference sample. Work surface reflection should be diffuse and should not exceed 20-percent specularity. To reduce glare, nonreflective or matte finished surfaces should be provided on consoles, panels, and other work surfaces. Placement of smooth, highly polished surfaces within 60 degrees of a person’s normal visual field should be avoided.1472G