<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">optical toys</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31357453</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:36:24</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">optic toys</dcterms:alternative> <dcterms:alternative xml:lang="en">optical toy</dcterms:alternative> <dcterms:alternative xml:lang="en">toy, optic</dcterms:alternative> <dcterms:alternative xml:lang="en">toys, optical</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Toys that entertain the visual senses, as by demonstrating the theory of the persistance of vision or that operate using other principles of optics, projected images, or light as a fundamental feature; popular especially during the 19th century. ]]></dc:description></metadata>