<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31362102</termId><termName>Newton&apos;s rings</termName><termType>PT</termType><termNote><![CDATA[ An optical effect manifested as a series of alternating light and dark colored bands; generally caused when one piece of glass with a curved surface rests on another with a flat surface, resulting in an interference of light waves. Named for the English physicist Sir Isaac Newton who first investigated their properties. ]]></termNote><termCreatedDate>2026-03-30 20:37:42</termCreatedDate><relation><relationType>UF</relationType><termId>31362103</termId><termName>Newton&apos;s ring</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31328202</termId><termName>optical illusion</termName><termType>PT</termType></relation></term>  </Zthes>