At a special angle known as Brewster's angle, no p-polarized light is reflected from the surface, thus all reflected light must be s-polarized, with an electric field perpendicular to the plane of incidence. A simple linear polarizer can be made by tilting a stack of glass plates at Brewster's angle to the beam.
In this particular instance, we would start off by measuring the wound in the length dimension. Where there is the maximum length of this wound of approximately 5.7 centimeters. The width would then be measured at its maximum point of width which is 2.5 centimeters. The depth we then would determine by probing the wound with our cotton-tipped applicator using the cotton end.
Stab wound: injury from sharp weapon that is deeper than it is wide. 1  Common weapons include knife, ice pick, scissors, fork. 2  Stab wound on the skin should be examined to determine if it has sharp or blunt margins; this can be used to determine if the weapon had a single edged or double edged blade.