<?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:obo_purl="http://purl.obolibrary.org/obo/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:metadata_def="http://data.bioontology.org/metadata/def/" xmlns:oboinowl_gen="http://www.geneontology.org/formats/oboInOwl#" xmlns:metadata="http://data.bioontology.org/metadata/"> <owl:Class rdf:about="http://purl.obolibrary.org/obo/ENVO_01000939"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/ENVO_00010483"/> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/ENVO_01000939"/> <metadata_def:mappingLoom>timecrystal</metadata_def:mappingLoom> <metadata_def:prefLabel>time crystal</metadata_def:prefLabel> <rdfs:comment>While the usage of the term is still debated, the general idea is that time crystals (which have been made using ytterbium ions and defect-bearing diamonds) break temporal symmetry analogously to how mineral crystal break spatial symmetry. While spatial crystals are inhomogeneous in space (vs a gas, which is distributed evenly) due to the ordering of their atoms, the properties of atoms in a time crystal are inhomogeneous in the time dimension.</rdfs:comment> <obo_purl:IAO_0000115>An open system in non-equilibrium with its environment that exhibits time translation symmetry breaking.</obo_purl:IAO_0000115> <oboinowl_gen:hasExactSynonym>space-time crystal</oboinowl_gen:hasExactSynonym> <metadata:prefixIRI>ENVO:01000939</metadata:prefixIRI> <rdfs:label xml:lang="en">time crystal</rdfs:label> </owl:Class> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/ENVO_01000939"> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/ENVO_01000939"/> </rdf:Description> </rdf:RDF>
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    <rdfs:comment>While the usage of the term is still debated, the general idea is that time crystals (which have been made using ytterbium ions and defect-bearing diamonds) break temporal symmetry analogously to how mineral crystal break spatial symmetry. While spatial crystals are inhomogeneous in space (vs a gas, which is distributed evenly) due to the ordering of their atoms, the properties of atoms in a time crystal are inhomogeneous in the time dimension.</rdfs:comment>
    <obo_purl:IAO_0000115>An open system in non-equilibrium with its environment that exhibits time translation symmetry breaking.</obo_purl:IAO_0000115>
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