{"id":209348,"date":"2024-03-21T14:07:31","date_gmt":"2024-03-21T14:07:31","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%99%e3%83%bc%e3%82%bf%e3%83%88%e3%83%ad%e3%83%b3%e5%8a%a0%e9%80%9f%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:11:07","modified_gmt":"2024-05-17T15:11:07","slug":"%e3%83%99%e3%83%bc%e3%82%bf%e3%83%88%e3%83%ad%e3%83%b3%e5%8a%a0%e9%80%9f%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%99%e3%83%bc%e3%82%bf%e3%83%88%e3%83%ad%e3%83%b3%e5%8a%a0%e9%80%9f%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u52a0\u901f\u5f0f | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u52a0\u901f\u5668\u306b\u3064\u3044\u3066\u306e\u57fa\u672c\u539f\u7406\u3001\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\u3001\u96fb\u5b50\u52a0\u901f\u306e\u8a08\u7b97\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u3001\u305d\u306e\u5fdc\u7528\u5206\u91ce\u307e\u3067\u8a73\u8ff0\u3057\u305f\u8a18\u4e8b\u3002<\/p>\n<h2>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u52a0\u901f\u5668 | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306f\u3001\u8377\u96fb\u7c92\u5b50\u3092\u52a0\u901f\u3059\u308b\u305f\u3081\u306e\u30b5\u30a4\u30af\u30ed\u30c8\u30ed\u30f3\u306e\u4e00\u7a2e\u3067\u3001\u7279\u306b\u96fb\u5b50\u3092\u9ad8\u3044\u30a8\u30cd\u30eb\u30ae\u30fc\u30ec\u30d9\u30eb\u307e\u3067\u52a0\u901f\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u57fa\u672c\u7684\u306a\u539f\u7406\u3001\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\u53ca\u3073\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u6982\u8981<\/h2>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306f\u30011940\u5e74\u4ee3\u306b\u30c9\u30ca\u30eb\u30c9\u30fb\u30b1\u30eb\u30b6\u30fc\u306b\u3088\u3063\u3066\u521d\u3081\u3066\u5b9f\u73fe\u3055\u308c\u305f\u52a0\u901f\u5668\u3067\u3059\u3002\u3053\u306e\u52a0\u901f\u5668\u306f\u3001\u96fb\u5b50\u3092\u975e\u5e38\u306b\u9ad8\u3044\u30a8\u30cd\u30eb\u30ae\u30fc\u307e\u3067\u52a0\u901f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u305d\u306e\u7d50\u679c\u3001\u533b\u7642\u304b\u3089\u7269\u7406\u5b66\u306e\u57fa\u672c\u7814\u7a76\u306b\u81f3\u308b\u307e\u3067\u5e83\u7bc4\u56f2\u306e\u5fdc\u7528\u304c\u3042\u308a\u307e\u3059\u3002\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u57fa\u672c\u539f\u7406\u306f\u3001\u5909\u52d5\u78c1\u5834\u3092\u5229\u7528\u3057\u3066\u52a0\u901f\u96fb\u78c1\u5834\u3092\u4f5c\u308a\u51fa\u3057\u3001\u3053\u308c\u306b\u3088\u308a\u96fb\u5b50\u3092\u52a0\u901f\u3059\u308b\u3053\u3068\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u52d5\u4f5c\u539f\u7406<\/h3>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u52d5\u4f5c\u539f\u7406\u306f\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u6cd5\u5247\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u6cd5\u5247\u306b\u3088\u308c\u3070\u3001\u6642\u9593\u3068\u5171\u306b\u5909\u5316\u3059\u308b\u78c1\u5834\u306f\u3001\u5468\u56f2\u306b\u96fb\u5834\u3092\u8a98\u5c0e\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u305d\u306e\u6570\u5f0f\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\n\\mathcal{E} = -\\frac{d\\Phi}{dt}<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\(\\mathcal{E}\\) \u306f\u8a98\u5c0e\u96fb\u5834\u3001\\(\\Phi\\) \u306f\u78c1\u675f\u3067\u3059\u3002\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u3067\u306f\u3001\u3053\u306e\u8a98\u5c0e\u96fb\u5834\u3092\u96fb\u5b50\u3092\u52a0\u901f\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n<h3>\u96fb\u5b50\u306e\u8ecc\u9053<\/h3>\n<p>\u96fb\u5b50\u306f\u78c1\u5834\u306e\u4e2d\u3067\u5186\u8ecc\u9053\u3092\u63cf\u3044\u3066\u79fb\u52d5\u3057\u307e\u3059\u3002\u96fb\u5b50\u304c\u53d7\u3051\u308b\u30ed\u30fc\u30ec\u30f3\u30c4\u529b\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nF = q(\\mathbf{E} + \\mathbf{v} \\times \\mathbf{B})<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001 \\( q \\) \u306f\u96fb\u5b50\u306e\u96fb\u8377\u3001\\(\\mathbf{E}\\)\u306f\u96fb\u5834\u3001\\(\\mathbf{v}\\)\u306f\u901f\u5ea6\u3001\\(\\mathbf{B}\\)\u306f\u78c1\u5834\u3067\u3059\u3002<\/p>\n<h2>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u52a0\u901f\u30d7\u30ed\u30bb\u30b9\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u305d\u306e\u8a08\u7b97\u3092\u5177\u4f53\u7684\u306b\u898b\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002 <\/p>\n<h3>\u96fb\u5b50\u306e\u30a8\u30cd\u30eb\u30ae\u30fc<\/h3>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306b\u304a\u3051\u308b\u96fb\u5b50\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u5897\u52a0\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nE = e \\int_0^R \\mathbf{E} \\cdot d\\mathbf{l}<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( E \\) \u306f\u96fb\u5b50\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3001\\( e \\) \u306f\u96fb\u5b50\u306e\u96fb\u8377\u3001\\( R \\) \u306f\u96fb\u5b50\u8ecc\u9053\u306e\u534a\u5f84\u3001\\(\\mathbf{E}\\) \u306f\u8a98\u5c0e\u96fb\u5834\u3067\u3059\u3002<\/p>\n<h3>\u78c1\u5834\u306e\u5f37\u5ea6<\/h3>\n<p>\u78c1\u5834\u306e\u5f37\u5ea6 \\( B \\) \u306f\u6b21\u306e\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nB = \\frac{\\mu_0 I}{2\\pi R}<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\(\\mu_0\\) \u306f\u78c1\u6c17\u5b9a\u6570\u3001\\( I \\) \u306f\u30b3\u30a4\u30eb\u306b\u6d41\u308c\u308b\u96fb\u6d41\u3001\\( R \\) \u306f\u96fb\u5b50\u306e\u8ecc\u9053\u534a\u5f84\u3067\u3059\u3002<\/p>\n<h3>\u52a0\u901f\u6761\u4ef6<\/h3>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u3067\u52b9\u7387\u3088\u304f\u52a0\u901f\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6b21\u306e\u52a0\u901f\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\n\\frac{dB}{dt} = \\frac{e}{m} \\mathbf{E}<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( \\frac{dB}{dt} \\) \u306f\u78c1\u5834\u306e\u6642\u9593\u5909\u5316\u7387\u3001\\( m \\) \u306f\u96fb\u5b50\u306e\u8cea\u91cf\u3067\u3059\u3002\u3053\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u3053\u3068\u3067\u3001\u96fb\u5b50\u304c\u9069\u5207\u306b\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<h2>\u304a\u308f\u308a\u306b<\/h2>\n<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306f\u3001\u5909\u52d5\u3059\u308b\u78c1\u5834\u3068\u8a98\u5c0e\u96fb\u5834\u3092\u5de7\u307f\u306b\u5229\u7528\u3057\u3066\u96fb\u5b50\u3092\u52a0\u901f\u3059\u308b\u52a0\u901f\u5668\u3067\u3059\u3002\u305d\u306e\u8a2d\u8a08\u3068\u8a08\u7b97\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u57fa\u672c\u539f\u7406\u3092\u6df1\u304f\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u77e5\u898b\u304c\u3001\u533b\u7642\u3084\u7269\u7406\u5b66\u306e\u7814\u7a76\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u3053\u3068\u3092\u8003\u3048\u308c\u3070\u3001\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u306e\u91cd\u8981\u6027\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u6709\u76ca\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d9\u30fc\u30bf\u30c8\u30ed\u30f3\u52a0\u901f\u5668\u306b\u3064\u3044\u3066\u306e\u57fa\u672c\u539f\u7406\u3001\u52d5\u4f5c\u30e1\u30ab\u30cb\u30ba\u30e0\u3001\u96fb\u5b50\u52a0\u901f\u306e\u8a08\u7b97\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u3001\u305d\u306e\u5fdc\u7528\u5206\u91ce\u307e\u3067\u8a73\u8ff0\u3057\u305f\u8a18\u4e8b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209348","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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