Calculate the reflectance for specific conditions. For example, say that a polished gold surface subjected to direct radiation with a wavelength of 480 nanometers reflects about 60 percent of that radiation. In this case, the reflectance would be q(y) = (Gr(y)/Gi(y))^2 = .6^2 = .36, or about 36 percent.
axial skeleton - the part of the skeleton that includes the skull and spinal column and sternum and ribs. breastbone, sternum - the flat bone that articulates with the clavicles and the first seven pairs of ribs. skull - the bony skeleton of the head of vertebrates.
The Axial Age is defined by Jaspers as occurring in the interval from about 800 to 200, but a closer analysis suggests the need to modify and break up this interval. However, the basic point is clear. But the Axial phenomenon is evanescent and begins to wane rapidly by 400.