<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Newton&apos;s rings</topic></authority><related type="broader"><topic>optical illusion</topic></related><variant type="other"><topic>Newton&apos;s ring</topic></variant> <note xml:lang="en"><![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. ]]></note></mads>