, which compares the light reflected from a specimen against a standard (typically highly polished black glass).
"Run it again," Elena said.
The American Society for Testing and Materials (ASTM) has developed a standard test method for measuring the specular gloss of surfaces, known as ASTM D523. This test method is widely used in various industries, including coatings, paints, and plastics, to evaluate the appearance of surfaces. astm d523 pdf new