{"id":"S85021031","label":"Oscilloscopes","description":"Here are entered works on test instruments in which the variations in an electrical quantity appear temporarily as a visible waveform on the screen of a cathode ray tube. Works on instruments that combine an oscilloscope with a camera to produce a permanent record of a waveform are entered under [Cathode ray oscillographs.]","source_url":"https://id.loc.gov/authorities/subjects/sh85021031","normalized_label":"oscilloscopes","broader":["http://id.loc.gov/authorities/subjects/sh85042343","http://id.loc.gov/authorities/subjects/sh98002596"],"aliases":["Cathode ray oscilloscope","Cathode ray oscilloscopes"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85021031","provider":"lcsh","revision":"5d306620fb8ab3c1","taxonomy_revision":"f050b5d4780b1289","title":"Oscilloscopes","url":"/topics/S85021031","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9514008161695172100","address_version":"morton4x16-v1","coordinates":[0,20,17733,39936],"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}