31298110optical propertiesPT2026-03-30 20:19:54UF31298111optical properties of materialsNDUF31298112properties, opticalNDBT31296909attributes and properties by specific typePTNT31301304brightnessPTNT31301308lusterPTNT31301310iridescencePTNT31301312opacityPTNT31301314translucencyPTNT31301316transparencyPTNT31301319mattePTNT31301322glossPTNT31301324shinePTNT31301326birefringencePTNT31301333chromaticityPTNT31301334dichroismPTNT31301336phosphorescentPTNT31301338illuminancePTNT31301340acutancePTNT31301341allochromaticPTNT31301343whitenessPTNT31301344reflectivityPTNT31301346color temperaturePT