<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31398578</termId><termName>polarimeters</termName><termType>PT</termType><termNote><![CDATA[ Polariscopes of a particular type; instruments for measuring the degree of polarization, determining the amount of rotation of the plane of polarization by a substance through which polarized light passes. ]]></termNote><termCreatedDate>2026-03-30 20:47:09</termCreatedDate><relation><relationType>UF</relationType><termId>31398579</termId><termName>polarimeter</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31358536</termId><termName>polariscopes</termName><termType>PT</termType></relation></term>  </Zthes>