{"id":"S85101143","label":"Photochemistry","description":"Here are entered works on the chemical action and influence of light. Works on chemical processes employed in photography are entered under the heading [Photographic chemistry.]","source_url":"https://id.loc.gov/authorities/subjects/sh85101143","normalized_label":"photochemistry","broader":["http://id.loc.gov/authorities/subjects/sh85023027"],"aliases":["Light--Chemical action","Photolysis (Chemistry)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85101143","provider":"lcsh","revision":"4adddd4664b32055","taxonomy_revision":"f050b5d4780b1289","title":"Photochemistry","url":"/topics/S85101143","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"867163105476624900","address_version":"morton4x16-v1","coordinates":[0,20,18985,23552],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}