{"schema_version":"4ort.packet/1","entity":{"entity_id":"etendue","kg_uuid":"bb945259-3f35-43d4-bfde-11b5aab9bce9","wikidata_id":"Q1370994","name":"etendue","description":"conserved property of the light in an optical system which characterizes how \"spread out\" the light is in terms of angle and area","type":"Thing","url":"https://4ort.xyz/entity/etendue"},"status":"complete","as_of":{"copy_written_at":"2026-11-01T13:56:31Z","last_source_edit_seen":"2026-07-08T10:09:01Z","stale_possible":false,"claims_refreshed_at":"2026-10-25T12:00:54Z","source_revision":2515040123},"facts":[{"field":"P361","label":"part of","value":"optics","value_id":"Q14620","value_raw":"Q14620","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q1370994#P361","source_edition":"2026-10-25T12:00:54Z","edition_basis":"claims_refreshed_at","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P6366","label":"Microsoft Academic ID (discontinued)","value":"167182200","value_id":null,"value_raw":"167182200","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q1370994#P6366","source_edition":"2026-10-25T12:00:54Z","edition_basis":"claims_refreshed_at","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P7973","label":"quantity symbol (LaTeX)","value":"G","value_id":null,"value_raw":"G","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q1370994#P7973","source_edition":"2026-10-25T12:00:54Z","edition_basis":"claims_refreshed_at","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}}],"unknowns":[],"omitted":{"facts":0,"reason":null},"licences":[{"source":"wikidata","source_name":"Wikidata","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"fields":["P361","P6366","P7973"]}],"routes":{"entity_page":"https://4ort.xyz/entity/etendue","packet_api":"https://4ort.xyz/api/v1/entities/etendue/packet","facts_jsonld":"https://4ort.xyz/entity/etendue/facts.json","changes_api":"https://4ort.xyz/api/v1/knowledge/get_entity_changes?entity=etendue","attention_api":"https://4ort.xyz/api/v1/knowledge/get_attention?entity=etendue","wikidata":"https://www.wikidata.org/wiki/Q1370994","official_website":null},"trust_rules":{"wikidata-reference-support/2":"From the references in our copy of the statement: high = it cites a source (stated in P248, or a reference URL that is not Wikipedia); medium = only 'imported from Wikimedia project' or a Wikipedia URL; unscored = our copy holds no reference (older copies dropped references, so this is not evidence that Wikidata has none). Wikidata may hold more references than our copy shows. Reference support, not a probability."},"notes":[]}