<?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">fluorescence</topic></authority><related type="narrower"><topic>x-ray fluorescence</topic></related><related type="narrower"><topic>ultraviolet fluorescence</topic></related><related type="other"><topic>incandescence</topic></related><related type="broader"><topic>luminescence</topic></related><variant type="other"><topic>fluorescent</topic></variant> <note xml:lang="en"><![CDATA[ Emission of electromagnetic radiation, usually visible light, caused by excitation of atoms in a material, which then reemit almost immediately. The initial excitation is usually caused by absorption of energy from incident radiation or particles, such as X-rays or electrons. ]]></note></mads>