{ "items" : [
    { "id" : "http://dbpedia.org/resource/Nuclear_emulsion"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In particle and nuclear physics, a nuclear emulsion plate is a photographic plate with a particularly thick emulsion layer and with a very uniform grain size. Like bubble chambers,  cloud chambers, and wire chambers nuclear emulsion plates record the tracks of charged particles passing through."] } } }
