{"id":"S85112261","label":"Refractive index","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85112261","normalized_label":"refractive index","broader":[],"aliases":["Index of refraction"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85112261","provider":"lcsh","revision":"0abb3bf690c9ed72","taxonomy_revision":"f050b5d4780b1289","title":"Refractive index","url":"/topics/S85112261","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"290561616821749316","address_version":"morton4x16-v1","coordinates":[0,20,19159,5120],"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}