{"id":1235,"date":"2011-06-23T11:59:15","date_gmt":"2011-06-23T02:59:15","guid":{"rendered":"http:\/\/pianotuning.jp\/?page_id=1235"},"modified":"2014-10-16T23:33:52","modified_gmt":"2014-10-16T14:33:52","slug":"pythagoras-2","status":"publish","type":"page","link":"https:\/\/pianotuning.jp\/?page_id=1235","title":{"rendered":"Pythagorean comma"},"content":{"rendered":"

\"Pythagoreancomma\"<\/a>\u300e\u30d4\u30bf\u30b4\u30e9\u30b9\u30b3\u30f3\u30de<\/strong>\u300f\uff08\u97f3\u5f8b\u306b\u5185\u5728\u3059\u308b\u6b6a\u307f\uff1a\u305d\u306e1\uff09
\n\u203bC<\/strong><\/span>\u3092\u8d77\u70b9\u3068\u3057\u3066\u4f5c\u56f3\u3057\u3066\u3044\u307e\u3059<\/p>\n

C<\/strong><\/span>\u2192G\u2192D\u2192A\u2192E\u2192B\u2192\u266fF\u2192\u266fC\u2192\u266fG\u2192\u266fD\u2192\u266fA\u2192F\u2192<\/span> C
\n<\/strong><\/span>C <\/strong>\u304b\u3089<\/span><\/span>\u4e94\u5ea6\u3092\u7a4d\u307f\u91cd\u306d<\/strong>\u3066\u3044\u304f\u3068\u300112\u56de\u76ee\u306b\u518d\u3073 <\/span>C <\/span><\/strong>\u304c\u3084\u3063\u3066\u304d\u307e\u3059\u3002
\n \u266a\u7d14\u6b63<\/span><\/span>\u4e94\u5ea6\u309212\u56de\u91cd\u306d\u305f\u97f3\u21d2\u3000702cent\u00d712=8424cent<\/span><\/span>
\n\u266a<\/span><\/span>\uff17\u30aa\u30af\u30bf\u30fc\u30d6\u4e0a\u306e\u97f3\u21d2\u30001200cent\u00d77=8400cent<\/p>\n

C <\/strong><\/span>\u306f\u3001\u5143\u306e\u97f3C <\/strong>\u306e7\u30aa\u30af\u30bf\u30fc\u30d6\u4e0a<\/span><\/span>\u3088\u308a\u300124cent<\/span><\/strong>\uff08\u534a\u97f3\u306e\u7d041\/4\uff09\u9ad8\u3044<\/strong>\u3068\u8a00\u3046\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n

\u3053\u306e2\u3064\u306e\u97f3\u306e\u97f3\u7a0b\u5dee<\/strong>[8424-8400=24cent<\/strong><\/span>] \u3092 \u30d4\u30bf\u30b4\u30e9\u30b9\u30b3\u30f3\u30de\uff08Pythagorean comma\uff09<\/strong>\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n

\u56f3\uff1aC<\/strong><\/span> \u304b\u3089\u7d14\u6b63\u4e94\u5ea6\u3092\u6b21\u3005\u306b\u8db3\u3057\u3066\u3044\u304f\u3068\u3001\u5143\u306e C<\/span><\/strong>\u3092\u901a\u308a\u904e\u304e\u305f\u3068\u3053\u308d\u306bC <\/strong><\/span>\u304c\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n

\u9375\u76e4\u697d\u5668\u3067\u30012\u3064\u306e\u97f3\u7a0b\u306eC<\/strong>\u3092\u4f5c\u308b\u308f\u3051\u306b\u306f\u3044\u304b\u306a\u3044\u306e\u3067\u3001\u69d8\u3005\u306a\u4e94\u5ea6\u306e\u914d\u5217\u3092\u5de5\u592b\u3057\u3066\u5186\u74b0\u3092\u7db4\u3058\u3066\u3044\u307e\u3059\u3002
\n\u3053\u306e+24cent<\/strong>\u309212\u30b3\u306e\u4e94\u5ea6\u3067\u7b49\u3057\u304f\u5206\u3051\u5408\u3046(24\u00f712= 2cent) \u3068\u3001\u5e73\u5747\u5f8b<\/a>\u306b\u3002
\n6\u30b3\u3067\u7b49\u3057\u304f\u5206\u3051\u5408\u3044(24\u00f76=4cent) \u767d\u9375\u306e\u307b\u3046\u3067\u53d7\u3051\u6301\u3064\u3068\u3001\u30f4\u30a1\u30ed\u30c3\u30c6\u30a3<\/a>\u3084\u30e4\u30f3\u30b0\u2161<\/a>\u306b\u3002
\n\u306a\u3069\u3001\u3044\u308d\u3044\u308d\u306a\u65b9\u6cd5\u3067\u3064\u3058\u3064\u307e\u5408\u308f\u305b\u3092\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n

\u30d4\u30bf\u30b4\u30e9\u30b9\u30b3\u30f3\u30de[24cent] \u3092\u5206\u3051\u5408\u3046\u8003\u3048\u65b9\u306f\u3001\u30b7\u30f3\u30c8\u30cb\u30c3\u30af\u30b3\u30f3\u30de<\/a>(\u4e09\u5ea6\u306e\u97f3\u7a0b\u5dee)[22cent]\u3092\u5206\u3051\u5408\u3046\u8003\u3048\u65b9\u3068\u300c\u5bfe\u6bd4\u7684\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u300d\u306b\u306a\u308b\u306e\u3082\u9762\u767d\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n

\u6ce8\uff1a\u3053\u306e\u3068\u304d\u306b\u51fa\u6765\u3066\u3044\u304f\u9577\u4e09\u5ea6\u306e\u97f3\u7a0b\u306f\u3001\u30d4\u30bf\u30b4\u30e9\u30b9\u306e\u4e09\u5ea6\u3068\u547c\u3070\u308c\u308b\u5538\u308a\u306e\u591a\u3044408cent<\/strong>\u3002\u56f3\u3067\u306f\u3001\u7d14\u6b63\u4e94\u5ea6\u3092\u3044\u3064\u307e\u3067\u3082\u91cd\u306d\u3066\u884c\u3063\u305f\u5834\u5408\u3092\u4eee\u60f3\u3057\u3066\u4f5c\u56f3\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

 <\/p>\n

http:\/\/okamotopiano.jp<\/a>\u3000\u5ca1\u672c\u30d4\u30a2\u30ce\u5de5\u623f\u3000\u5ca1\u672c\u82b3\u96c4<\/p>\n","protected":false},"excerpt":{"rendered":"

\u300e\u30d4\u30bf\u30b4\u30e9\u30b9\u30b3\u30f3\u30de\u300f\uff08\u97f3\u5f8b\u306b\u5185\u5728\u3059\u308b\u6b6a\u307f\uff1a\u305d\u306e1\uff09 \u203bC\u3092\u8d77\u70b9\u3068\u3057\u3066\u4f5c\u56f3\u3057\u3066\u3044\u307e\u3059 C\u2192G\u2192D\u2192A\u2192E\u2192B\u2192\u266fF\u2192\u266fC\u2192\u266fG\u2192\u266fD\u2192\u266fA\u2192F\u2192 C C \u304b\u3089\u4e94\u5ea6\u3092\u7a4d\u307f\u91cd\u306d\u3066\u3044\u304f\u3068\u300112\u56de\u76ee\u306b\u518d\u3073 C \u304c\u3084\u3063\u3066\u304d\u307e\u3059\u3002 \u266a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":585,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"tpl-nosidebar.php","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/pages\/1235"}],"collection":[{"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pianotuning.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1235"}],"version-history":[{"count":96,"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/pages\/1235\/revisions"}],"predecessor-version":[{"id":3900,"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/pages\/1235\/revisions\/3900"}],"up":[{"embeddable":true,"href":"https:\/\/pianotuning.jp\/index.php?rest_route=\/wp\/v2\/pages\/585"}],"wp:attachment":[{"href":"https:\/\/pianotuning.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}