{"id":"S85058421","label":"Half-life (Nuclear physics)","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85058421","normalized_label":"half-life (nuclear physics)","broader":["http://id.loc.gov/authorities/subjects/sh85110661","http://id.loc.gov/authorities/subjects/sh85110713"],"aliases":["Radioactive half-life","Radioisotopes--Half-life"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85058421","provider":"lcsh","revision":"7c7a30299e75f2ce","taxonomy_revision":"f050b5d4780b1289","title":"Half-life (Nuclear physics)","url":"/topics/S85058421","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"10090328452394796548","address_version":"morton4x16-v1","coordinates":[0,20,18317,54272],"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}