ASTM D 1003 is often used to characterize light scattered (haze) from aerospace transparencies. However, due to the strong angular dependence of light scattered from these materials, information gathered using ASTM D 1003 is limited in determining the effect of scatter on visual performance. Another technique, one capable of measuring scattered light as a function of observation an-gle and illumination angle similar to ASTM E 167, is more time consuming to perform but yields information that may be better suited to visual modeling. Even though the techniques are consider-ably different, it is possible to compare measurements made on several samples using these two methods. This paper compares the re-sults of measurements made using both test procedures on a number of transparent parts.
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