Specular Gloss definitions

Specular Gloss

Mirror-like finish (usually 60 degrees on a 60-degree meter).
Found on http://www.encyclo.co.uk/local/21079

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Specular Gloss

Relative luminous fractional reflectance from a surface in the mirror or specular direction.
Found on https://www.xrite.com/learning/other-resources/glossary

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