{"id":168217,"date":"2024-04-27T14:07:06","date_gmt":"2024-04-27T14:07:06","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e8%aa%98%e5%b0%8e%e7%a3%81%e6%b0%97%e3%82%a2%e3%82%af%e3%83%81%e3%83%a5%e3%82%a8%e3%83%bc%e3%82%bf\/"},"modified":"2024-05-11T13:37:21","modified_gmt":"2024-05-11T13:37:21","slug":"%e8%aa%98%e5%b0%8e%e7%a3%81%e6%b0%97%e3%82%a2%e3%82%af%e3%83%81%e3%83%a5%e3%82%a8%e3%83%bc%e3%82%bf","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e8%aa%98%e5%b0%8e%e7%a3%81%e6%b0%97%e3%82%a2%e3%82%af%e3%83%81%e3%83%a5%e3%82%a8%e3%83%bc%e3%82%bf\/","title":{"rendered":"\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf"},"content":{"rendered":"<p class=\"sidekick\">\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306e\u539f\u7406\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u96fb\u78c1\u8a98\u5c0e\u3092\u6d3b\u7528\u3057\u305f\u52d5\u4f5c\u539f\u7406\u3068\u591a\u5c90\u306b\u308f\u305f\u308b\u5de5\u5b66\u5206\u91ce\u3067\u306e\u4f7f\u7528\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/05\/\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf.png\" alt=\"\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\"\/><\/p>\n<h2>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306b\u3064\u3044\u3066<\/h2>\n<p>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u539f\u7406\u3092\u5229\u7528\u3057\u3066\u52d5\u4f5c\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u3067\u3042\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u5de5\u5b66\u5206\u91ce\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u88c5\u7f6e\u306f\u3001\u96fb\u78c1\u8a98\u5c0e\u306e\u6cd5\u5247\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u96fb\u78c1\u77f3\u306e\u539f\u7406\u3092\u6d3b\u7528\u3057\u3066\u7269\u7406\u7684\u306a\u529b\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306e\u57fa\u672c\u539f\u7406\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u96fb\u78c1\u8a98\u5c0e\u306e\u6cd5\u5247<\/h2>\n<p>\u96fb\u78c1\u8a98\u5c0e\u3068\u306f\u3001\u78c1\u5834\u306e\u5909\u5316\u304c\u96fb\u6d41\u3092\u751f\u307f\u51fa\u3059\u73fe\u8c61\u3092\u6307\u3057\u30011831\u5e74\u306b\u30de\u30a4\u30b1\u30eb\u30fb\u30d5\u30a1\u30e9\u30c7\u30fc\u306b\u3088\u3063\u3066\u767a\u898b\u3055\u308c\u307e\u3057\u305f\u3002\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u6cd5\u5247\u3067\u306f\u3001\u30b3\u30a4\u30eb\u3092\u901a\u904e\u3059\u308b\u78c1\u675f\u306e\u6642\u9593\u7684\u5909\u5316\u304c\u96fb\u5727\u3092\u8a98\u5c0e\u3059\u308b\u539f\u56e0\u3067\u3042\u308b\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u78c1\u675f\u306e\u5909\u5316\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\\[ \\text{\u78c1\u675f} = \\text{\u78c1\u5834} (B) * \\text{\u9762\u7a4d} (A) * \\cos(\\theta) \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\u03b8\u306f\u78c1\u5834\u3068\u9762\u7a4d\u30d9\u30af\u30c8\u30eb\u306e\u9593\u306e\u89d2\u5ea6\u3092\u6307\u3057\u307e\u3059\u3002\u78c1\u675f\u304c\u5909\u5316\u3059\u308b\u3068\u3001\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u6cd5\u5247\u306b\u3088\u308a\u96fb\u5727\u304c\u767a\u751f\u3057\u3001\u30b3\u30a4\u30eb\u306b\u96fb\u6d41\u304c\u6d41\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306e\u52d5\u4f5c\u539f\u7406<\/h2>\n<p>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306f\u3001\u4e0a\u8a18\u306e\u96fb\u78c1\u8a98\u5c0e\u306e\u539f\u7406\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u5185\u306e\u30b3\u30a4\u30eb\u306b\u4ea4\u6d41\u307e\u305f\u306f\u30d1\u30eb\u30b9\u96fb\u6d41\u3092\u6d41\u3059\u3053\u3068\u3067\u3001\u6642\u9593\u5909\u52d5\u3059\u308b\u78c1\u5834\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u78c1\u5834\u306e\u5909\u5316\u304c\u91d1\u5c5e\u30ed\u30c3\u30c9\u3084\u30d7\u30e9\u30f3\u30b8\u30e3\u30fc\u306a\u3069\u306e\u9244\u5fc3\u3092\u901a\u3058\u3066\u8a98\u5c0e\u3055\u308c\u3001\u30ed\u30c3\u30c9\u304c\u5f15\u304d\u3064\u3051\u3089\u308c\u305f\u308a\u62bc\u3057\u51fa\u3055\u308c\u305f\u308a\u3059\u308b\u529b\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002\u3053\u306e\u529b\u306f\u3001\u30d0\u30eb\u30d6\u3092\u958b\u9589\u3057\u305f\u308a\u3001\u6a5f\u68b0\u7684\u306a\u52d5\u304d\u3092\u5236\u5fa1\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306e\u5fdc\u7528<\/h2>\n<ul>\n<li><strong>\u81ea\u52d5\u5316\u5de5\u5b66\uff1a<\/strong> 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\u885b\u661f\u3084\u5b87\u5b99\u8239\u306e\u69d8\u3005\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u5236\u5fa1\u3067\u6b20\u304b\u305b\u306a\u3044\u8981\u7d20\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306f\u52b9\u7387\u7684\u3067\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u6bd4\u8f03\u7684\u5bb9\u6613\u3067\u3042\u308b\u305f\u3081\u3001\u591a\u304f\u306e\u30cf\u30a4\u30c6\u30af\u5206\u91ce\u3067\u91cd\u5b9d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u52d5\u4f5c\u304c\u901f\u304f\u3001\u9ad8\u7cbe\u5ea6\u306a\u5236\u5fa1\u304c\u53ef\u80fd\u3067\u3042\u308b\u305f\u3081\u3001\u69d8\u3005\u306a\u81ea\u52d5\u5316\u6280\u8853\u306b\u4e0d\u53ef\u6b20\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306f\u3001\u305d\u306e\u72ec\u7279\u306a\u5229\u70b9\u3068\u7528\u9014\u306b\u3088\u308a\u3001\u73fe\u4ee3\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u5206\u91ce\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u7269\u7406\u306e\u57fa\u672c\u539f\u7406\u3092\u7406\u89e3\u3057\u3001\u305d\u308c\u3092\u73fe\u5b9f\u4e16\u754c\u306e\u6280\u8853\u554f\u984c\u306e\u89e3\u6c7a\u3078\u3068\u5fdc\u7528\u3059\u308b\u3053\u3068\u306f\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u672c\u8cea\u7684\u306a\u90e8\u5206\u3067\u3042\u308a\u3001\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306f\u305d\u306e\u7d20\u6674\u3089\u3057\u3044\u4f8b\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8a98\u5c0e\u78c1\u6c17\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306e\u539f\u7406\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u96fb\u78c1\u8a98\u5c0e\u3092\u6d3b\u7528\u3057\u305f\u52d5\u4f5c\u539f\u7406\u3068\u591a\u5c90\u306b\u308f\u305f\u308b\u5de5\u5b66\u5206\u91ce\u3067\u306e\u4f7f\u7528\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":196713,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[90],"tags":[91],"class_list":["post-168217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-90","tag-91","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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