{"aspect_id":"AS229","aspect_name":"radiant-flux-density-per-unit-frequency","aspect_reference":null,"aspect_symbol":null,"name":"radiant-flux-density-per-unit-frequency joule per metre squared per second (per hertz)","scale_id":"SC1552","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":"None J.s-1.m-2.(Hz-1)","unit_id":"UN1465","unit_name":"joule per metre squared per second (per hertz)","unit_reference":null,"unit_symbol":"J.s-1.m-2.(Hz-1)"}