<?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">microfadeometry</topic></authority><related type="other"><topic>microfadeometers</topic></related><related type="broader"><topic>accelerated aging</topic></related> <note xml:lang="en"><![CDATA[ Microfadeometry is a recently developed technique that measures color changes and evaluates light stability in individual objects of art that are sensitive to light exposure. A microfade tester (MFT) uses a powerful xenon arc lamp and filters to focus a beam of very intense light through a fiber optic onto a tiny spot on the surface of the artwork.  A second fiber optic collects the reflected light and delivers it to a miniature spectrometer.  As the lamp fades the surface of the artwork, the resulting color change is monitored by the spectrometer.   ]]></note></mads>