{"id":209120,"date":"2024-03-21T14:06:06","date_gmt":"2024-03-21T14:06:06","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e7%a3%81%e6%b0%97%e6%8b%a1%e6%95%a3%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/"},"modified":"2024-05-17T15:07:33","modified_gmt":"2024-05-17T15:07:33","slug":"%e7%a3%81%e6%b0%97%e6%8b%a1%e6%95%a3%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e7%a3%81%e6%b0%97%e6%8b%a1%e6%95%a3%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/","title":{"rendered":"\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528"},"content":{"rendered":"

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306e\u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u3001\u96fb\u78c1\u8a98\u5c0e\u3001\u5909\u5727\u5668\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u304a\u3051\u308b\u91cd\u8981\u6027\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528<\/h2>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u73fe\u8c61\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u91cd\u8981\u306a\u65b9\u7a0b\u5f0f\u306e\u4e00\u3064\u3067\u3059\u3002\u3053\u306e\u65b9\u7a0b\u5f0f\u306f\u3001\u78c1\u5834\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u3069\u306e\u3088\u3046\u306b\u5909\u5316\u3059\u308b\u304b\u3092\u8a18\u8ff0\u3057\u3066\u304a\u308a\u3001\u7279\u306b\u96fb\u78c1\u8a98\u5c0e\u3084\u5909\u5727\u5668\u3001\u30e2\u30fc\u30bf\u30fc\u306a\u3069\u3001\u591a\u304f\u306e\u5fdc\u7528\u306b\u95a2\u308f\u3063\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306e\u57fa\u672c\u7684\u306a\u89e3\u8aac\u3001\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5b9f\u969b\u306e\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u308f\u304b\u308a\u3084\u3059\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306e\u89e3\u8aac<\/h2>\n

\u78c1\u5834 \\(\\mathbf{B}\\) \u306e\u6642\u9593\u5909\u5316\u3092\u8aac\u660e\u3059\u308b\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306f\u3001\u6b21\u306e\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n

\n\\[ \\frac{\\partial \\mathbf{B}}{\\partial t} = \\nabla \\times (\\mathbf{E}) \\]\n<\/p>\n

\u3053\u3053\u3067 \\(\\mathbf{E}\\) \u306f\u96fb\u5834\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u306e\u65b9\u7a0b\u5f0f\u306f\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u6cd5\u5247\u306e\u4e00\u90e8\u3067\u3042\u308a\u3001\u78c1\u5834\u306e\u6642\u9593\u5909\u5316\u304c\u96fb\u5834\u306e\u56de\u8ee2 (\\(\\nabla \\times \\mathbf{E}\\)) \u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3055\u3089\u306b\u3001\u30aa\u30fc\u30e0\u306e\u6cd5\u5247\u3068\u96fb\u5834-\u96fb\u6d41\u5bc6\u5ea6\u306e\u95a2\u4fc2\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n

\n\\[ \\frac{\\partial \\mathbf{B}}{\\partial t} = \\frac{1}{\\mu \\sigma} \\nabla^2 \\mathbf{B} \\]\n<\/p>\n

\u3053\u3053\u3067\u3001\\(\\mu\\) \u306f\u900f\u78c1\u7387\u3001\\(\\sigma\\) \u306f\u96fb\u6c17\u4f1d\u5c0e\u7387\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u5f0f\u306f\u3001\u78c1\u5834\u304c\u7a7a\u9593\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u62e1\u6563\u3059\u308b\u304b\u3082\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u3092\u89e3\u304f\u305f\u3081\u306b\u306f\u3001\u521d\u671f\u6761\u4ef6\u3068\u5883\u754c\u6761\u4ef6\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u521d\u671f\u6761\u4ef6\u306f\u3001\u6642\u9593\\(t = 0\\)\u306b\u304a\u3051\u308b\u78c1\u5834\u306e\u5206\u5e03\u3067\u3059\u3002\u5883\u754c\u6761\u4ef6\u306f\u3001\u7279\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8\u3084\u30a8\u30ea\u30a2\u3067\u78c1\u5834\u304c\u3069\u306e\u3088\u3046\u306b\u632f\u308b\u821e\u3046\u304b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

\u6570\u5024\u89e3\u6cd5\u306e\u4e00\u3064\u306e\u4f8b\u3068\u3057\u3066\u3001\u6709\u9650\u8981\u7d20\u6cd5 (FEM) \u3092\u7528\u3044\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002FEM\u306f\u3001\u6bd4\u8f03\u7684\u8907\u96d1\u306a\u5f62\u72b6\u306e\u9818\u57df\u306b\u5bfe\u3057\u3066\u3082\u6709\u52b9\u306a\u89e3\u6cd5\u3067\u3001\u591a\u304f\u306e\u5b9f\u969b\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n

\u5fdc\u7528\u4f8b<\/h2>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u591a\u304f\u306e\u5206\u91ce\u3067\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n

\u96fb\u78c1\u8a98\u5c0e<\/h3>\n

\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u96fb\u78c1\u8a98\u5c0e\u306e\u6cd5\u5247\u306b\u57fa\u3065\u3044\u3066\u3001\u78c1\u5834\u306e\u5909\u5316\u304c\u96fb\u6d41\u3092\u8a98\u767a\u3059\u308b\u73fe\u8c61\u3067\u3059\u3002\u96fb\u78c1\u77f3\u3084\u767a\u96fb\u6a5f\u306e\u8a2d\u8a08\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n

\u5909\u5727\u5668\u306e\u8a2d\u8a08<\/h3>\n

\u5909\u5727\u5668\u306f\u3001\u7570\u306a\u308b\u96fb\u5727\u30ec\u30d9\u30eb\u9593\u3067\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3059\u3002\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u3092\u7528\u3044\u3066\u3001\u52b9\u7387\u7684\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u8ee2\u9001\u3092\u5b9f\u73fe\u3059\u308b\u8a2d\u8a08\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n

\u30e2\u30fc\u30bf\u30fc\u306e\u89e3\u6790<\/h3>\n

\u96fb\u6c17\u30e2\u30fc\u30bf\u30fc\u5185\u306e\u78c1\u5834\u306e\u6642\u9593\u5909\u5316\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u6027\u80fd\u3092\u6700\u9069\u5316\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u9ad8\u52b9\u7387\u30e2\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u306f\u4e0d\u53ef\u6b20\u306a\u77e5\u8b58\u3067\u3059\u3002<\/p>\n

\u307e\u3068\u3081<\/h2>\n

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306f\u96fb\u78c1\u6c17\u5b66\u306e\u4e2d\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u591a\u304f\u306e\u96fb\u6c17\u6a5f\u5668\u3084\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u3068\u89e3\u6790\u306b\u7528\u3044\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u65b9\u7a0b\u5f0f\u306e\u57fa\u672c\u7684\u306a\u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5b9f\u969b\u306e\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u77e5\u8b58\u3092\u57fa\u306b\u3001\u3055\u3089\u306b\u6df1\u304f\u96fb\u78c1\u6c17\u5b66\u3092\u63a2\u6c42\u3057\u3001\u69d8\u3005\u306a\u5fdc\u7528\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306e\u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u3001\u96fb\u78c1\u8a98\u5c0e\u3001\u5909\u5727\u5668\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u304a\u3051\u308b\u91cd\u8981\u6027\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u8aac\u660e\u3057\u307e\u3059\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-209120","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":"\n\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528<\/title>\n<meta name=\"description\" content=\"\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f\u306e\u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u305d\u3057\u3066\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u3001\u96fb\u78c1\u8a98\u5c0e\u3001\u5909\u5727\u5668\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u304a\u3051\u308b\u91cd\u8981\u6027\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.electricity-magnetism.org\/ja\/%e7%a3%81%e6%b0%97%e6%8b%a1%e6%95%a3%e6%96%b9%e7%a8%8b%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95-%e5%bf%9c%e7%94%a8\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u78c1\u6c17\u62e1\u6563\u65b9\u7a0b\u5f0f | \u89e3\u8aac\u3001\u8a08\u7b97\u65b9\u6cd5 & \u5fdc\u7528\" 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