{ "items" : [
    { "id" : "http://dbpedia.org/resource/Nernst_glower"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The Nernst glower is an obsolete device for providing a continuous source of (near) infrared radiation for use in spectroscopy. Typically it was in the form of a cylindrical rod or tube composed of a mixture of certain oxides such as  zirconium oxide (ZrO2), yttrium oxide (Y2O3) and erbium oxide (Er2O3) at a ratio of 90:7:3 by weight. They  operated by being electrically heated to about 2000 °C."] } } }
