{"id":209057,"date":"2024-03-21T14:05:43","date_gmt":"2024-03-21T14:05:43","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%82%b3%e3%82%a2%e3%82%b7%e3%83%93%e3%83%86%e3%82%a3%e3%81%ae%e5%85%ac%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8\/"},"modified":"2024-05-17T15:06:29","modified_gmt":"2024-05-17T15:06:29","slug":"%e3%82%b3%e3%82%a2%e3%82%b7%e3%83%93%e3%83%86%e3%82%a3%e3%81%ae%e5%85%ac%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%82%b3%e3%82%a2%e3%82%b7%e3%83%93%e3%83%86%e3%82%a3%e3%81%ae%e5%85%ac%e5%bc%8f-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%80%81%e5%bf%9c%e7%94%a8\/","title":{"rendered":"\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u516c\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528"},"content":{"rendered":"

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3068\u5fdc\u7528\u3092\u89e3\u8aac\u3002\u900f\u78c1\u7387\u306f\u78c1\u6c17\u56de\u8def\u3084\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u3001\u78c1\u6c17\u8a18\u9332\u3001\u30bb\u30f3\u30b5\u30fc\u3067\u91cd\u8981\u3002\u52b9\u7387\u7684\u306a\u8a2d\u8a08\u306b\u4e0d\u53ef\u6b20\u3002<\/p>\n

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u516c\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528<\/h2>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u3067\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308b\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\uff08\u900f\u78c1\u7387\uff09\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306f\u4e3b\u306b\u78c1\u6c17\u56de\u8def\u306b\u304a\u3051\u308b\u6750\u6599\u306e\u78c1\u6c17\u7279\u6027\u3092\u793a\u3059\u6307\u6a19\u3067\u3042\u308a\u3001\u69d8\u3005\u306a\u5fdc\u7528\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u5b9a\u7fa9<\/h2>\n

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\uff08\u900f\u78c1\u7387\u3001${\\mu}$\uff09\u3068\u306f\u3001\u3042\u308b\u6750\u6599\u304c\u3069\u308c\u3060\u3051\u78c1\u529b\u7dda\u3092\u901a\u3059\u304b\u3092\u793a\u3059\u6307\u6a19\u3067\u3059\u3002\u900f\u78c1\u7387\u306f\u3001\u771f\u7a7a\u4e2d\u306e\u900f\u78c1\u7387${\\mu_0}$\u3068\u76f8\u5bfe\u900f\u78c1\u7387${\\mu_r}$\u306e\u7a4d\u3068\u3057\u3066\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u5177\u4f53\u7684\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059:<\/p>\n

$${\\mu = \\mu_0 \\mu_r}$$<\/p>\n

\u3053\u3053\u3067\u3001${\\mu_0}$\u306f\u771f\u7a7a\u306e\u900f\u78c1\u7387\u3067\u3042\u308a\u3001\u7d04$4\\pi \\times 10^{-7} \\, \\mathrm{H\/m}$\uff08\u30d8\u30f3\u30ea\u30fc\u6bce\u30e1\u30fc\u30c8\u30eb\uff09\u3067\u3059\u3002${\\mu_r}$\u306f\u6750\u6599\u306e\u76f8\u5bfe\u900f\u78c1\u7387\u3067\u3001\u305d\u306e\u6750\u6599\u304c\u771f\u7a7a\u3068\u6bd4\u8f03\u3057\u3066\u3069\u308c\u3060\u3051\u900f\u78c1\u6027\u3092\u6301\u3064\u304b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u900f\u78c1\u7387\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u5f0f\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059:<\/p>\n

$${\\mu = \\frac{B}{H}}$$<\/p>\n

\u3053\u3053\u3067\u3001${B}$\u306f\u78c1\u675f\u5bc6\u5ea6\uff08\u30c6\u30b9\u30e9, T\uff09\u3001${H}$\u306f\u78c1\u5834\u5f37\u5ea6\uff08\u30a2\u30f3\u30da\u30a2\u6bce\u30e1\u30fc\u30c8\u30eb, A\/m\uff09\u3067\u3059\u3002<\/p>\n

\u5177\u4f53\u7684\u306a\u8a08\u7b97\u4f8b\u3092\u6319\u3052\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u3042\u308b\u6750\u6599\u306e\u78c1\u5834\u5f37\u5ea6\u304c$H = 500 \\, \\mathrm{A\/m}$\u3001\u78c1\u675f\u5bc6\u5ea6\u304c$B = 0.5 \\, \\mathrm{T}$\u3067\u3042\u308b\u5834\u5408\u3001\u305d\u306e\u6750\u6599\u306e\u900f\u78c1\u7387\u306f\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059:<\/p>\n

$${\\mu = \\frac{0.5 \\, \\mathrm{T}}{500 \\, \\mathrm{A\/m}} = 1 \\times 10^{-3} \\, \\mathrm{H\/m}}$$<\/p>\n

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u5fdc\u7528<\/h2>\n

\u900f\u78c1\u7387\u306f\u69d8\u3005\u306a\u5fdc\u7528\u5206\u91ce\u3067\u6d3b\u7528\u3055\u308c\u307e\u3059\u3002\u3044\u304f\u3064\u304b\u306e\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059:<\/p>\n

1. \u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u3068\u30a4\u30f3\u30c0\u30af\u30bf\u30fc<\/h3>\n

\u900f\u78c1\u7387\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u306e\u30b3\u30a2\u6750\u6599\u306e\u7279\u6027\u3092\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u52b9\u7387\u7684\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u4f1d\u9054\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u8a2d\u8a08\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u307e\u305f\u3001\u30a4\u30f3\u30c0\u30af\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u3082\u540c\u69d8\u306e\u5f71\u97ff\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

2. \u78c1\u6c17\u8a18\u9332<\/h3>\n

\u78c1\u6c17\u30c6\u30fc\u30d7\u3084\u30cf\u30fc\u30c9\u30c7\u30a3\u30b9\u30af\u306e\u6750\u6599\u306f\u9ad8\u3044\u900f\u78c1\u7387\u3092\u6301\u3064\u5fc5\u8981\u304c\u3042\u308a\u3001\u30c7\u30fc\u30bf\u306e\u8a18\u9332\u3068\u518d\u751f\u304c\u52b9\u7387\u3088\u304f\u884c\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u57fa\u6e96\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

3. \u78c1\u6c17\u30bb\u30f3\u30b5<\/h3>\n

\u900f\u78c1\u7387\u306e\u9ad8\u3044\u6750\u6599\u306f\u3001\u4f8b\u3048\u3070\u96fb\u5b50\u30b3\u30f3\u30d1\u30b9\u306a\u3069\u306e\u78c1\u6c17\u30bb\u30f3\u30b5\u30fc\u3067\u4f7f\u7528\u3055\u308c\u3001\u5fae\u7d30\u306a\u78c1\u5834\u306e\u5909\u5316\u3092\u9ad8\u611f\u5ea6\u3067\u691c\u51fa\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u3088\u3046\u306b\u3001\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306f\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u3067\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u5fdc\u7528\u306b\u304a\u3044\u3066\u900f\u78c1\u7387\u306e\u7279\u6027\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u52b9\u7387\u7684\u306a\u8a2d\u8a08\u3084\u6027\u80fd\u306e\u5411\u4e0a\u306b\u7e4b\u304c\u308a\u307e\u3059\u3002<\/p>\n

\u4ee5\u4e0a\u306e\u5185\u5bb9\u304c\u3001\u900f\u78c1\u7387\u306e\u57fa\u790e\u7684\u306a\u7406\u89e3\u3068\u305d\u306e\u5fdc\u7528\u306b\u95a2\u3059\u308b\u7c21\u5358\u306a\u89e3\u8aac\u3067\u3059\u3002\u7686\u3055\u3093\u306e\u5b66\u7fd2\u3084\u5fdc\u7528\u306e\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n

Remember to include the entire code block inside a proper HTML document structure if you plan to use this for a webpage. This article introduces the concept of permeability, explains how to calculate it, and discusses its applications in a clear and concise manner.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3068\u5fdc\u7528\u3092\u89e3\u8aac\u3002\u900f\u78c1\u7387\u306f\u78c1\u6c17\u56de\u8def\u3084\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u3001\u78c1\u6c17\u8a18\u9332\u3001\u30bb\u30f3\u30b5\u30fc\u3067\u91cd\u8981\u3002\u52b9\u7387\u7684\u306a\u8a2d\u8a08\u306b\u4e0d\u53ef\u6b20\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-209057","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\u30b3\u30a2\u30b7\u30d3\u30c6\u30a3\u306e\u516c\u5f0f | \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5fdc\u7528<\/title>\n<meta name=\"description\" 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