{"author_url":"https://blog.hatena.ne.jp/cool-hira/","version":"1.0","provider_url":"https://hatena.blog","author_name":"cool-hira","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcool-hira.hatenablog.com%2Fentry%2F20140628%2F1403903122\" title=\"\u3058\u3058\u3043\u306e\u300c\u4eba\u306e\u6b7b\u306b\u3056\u307e_1374_\u30d2\u30c3\u30d1\u30eb\u30b3\u30b9\u300d - cool-hira\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","blog_url":"https://cool-hira.hatenablog.com/","url":"https://cool-hira.hatenablog.com/entry/20140628/1403903122","type":"rich","description":"Math video Hipparchus \u52d5\u753b YouTube http://www.youtube.com/watch?v=EB1nKgN6-Fw Google \u30ab\u30ec\u30f3\u30c0\u30fc \u52d5\u753b YouTube http://www.youtube.com/watch?v=DEWz9hEH-y8 \u30d2\u30c3\u30d1\u30eb\u30b3\u30b9 \u30d2\u30c3\u30d1\u30eb\u30b3\u30b9\u306e\u6e2c\u5b9a\u65b9\u6cd5 How distant is the Moon? Hipparchus, who used an eclipse of the Moon to deduce the precession of the equinoxes, used a total eclipse of th\u2026","categories":[],"provider_name":"Hatena Blog","image_url":"http://abyss.uoregon.edu/~js/images/hipparchus.jpg","published":"2014-06-28 06:05:22","width":"100%","title":"\u3058\u3058\u3043\u306e\u300c\u4eba\u306e\u6b7b\u306b\u3056\u307e_1374_\u30d2\u30c3\u30d1\u30eb\u30b3\u30b9\u300d","blog_title":"cool-hira\u2019s diary"}