<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31402830</termId><termName>reflectance</termName><termType>PT</termType><termNote><![CDATA[ A measure of the degree to which a surface reflects light usually expressed as the ratio of reflected light to the incident light of a reference surface. ]]></termNote><termCreatedDate>2026-03-30 20:48:20</termCreatedDate><relation><relationType>UF</relationType><termId>31402831</termId><termName>coefficient of reflection</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31402832</termId><termName>coefficient, reflection</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31402833</termId><termName>factor, reflection</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31402834</termId><termName>reflection coefficient</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31402835</termId><termName>reflection factor</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31402836</termId><termName>reflectivity</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31361749</termId><termName>light-related concepts</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31432114</termId><termName>diffuse reflectance</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31301344</termId><termName>reflectivity</termName><termType>PT</termType></relation></term>  </Zthes>