"明るさ" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "あかるさ"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "unknown",
  "pos_title": "和語の漢字表記",
  "senses": [
    {
      "glosses": [
        "あかるさ　参照"
      ],
      "id": "ja-明るさ-ja-unknown-HOQ46~6S"
    }
  ],
  "tags": [
    "form-of",
    "kanji"
  ],
  "word": "明るさ"
}

{
  "categories": [
    "日本語"
  ],
  "forms": [
    {
      "form": "あかるさ"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "unknown",
  "pos_title": "和語の漢字表記",
  "senses": [
    {
      "glosses": [
        "あかるさ　参照"
      ]
    }
  ],
  "tags": [
    "form-of",
    "kanji"
  ],
  "word": "明るさ"
}