{"id":209218,"date":"2024-03-21T14:06:41","date_gmt":"2024-03-21T14:06:41","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e3%81%ae%e6%9c%89%e5%8a%b9%e9%9d%a2%e7%a9%8d%e3%81%ae%e5%85%ac%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":"2024-05-17T15:09:02","modified_gmt":"2024-05-17T15:09:02","slug":"%e3%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e3%81%ae%e6%9c%89%e5%8a%b9%e9%9d%a2%e7%a9%8d%e3%81%ae%e5%85%ac%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%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e3%81%ae%e6%9c%89%e5%8a%b9%e9%9d%a2%e7%a9%8d%e3%81%ae%e5%85%ac%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":"\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306e\u516c\u5f0f | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306b\u3064\u3044\u3066\u306e\u516c\u5f0f\u3001\u57fa\u672c\u7684\u306a\u6982\u8981\u3001\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3002\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3\u3068\u306e\u95a2\u9023\u3084\u5177\u4f53\u4f8b\u3082\u542b\u3080\u3002<\/p>\n<h2>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306e\u516c\u5f0f | \u6982\u8981\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u5206\u91ce\u306b\u304a\u3044\u3066\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\uff08Effective Area\uff09\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u3068\u3001\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u3068\u306f\uff1f<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u3068\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u304c\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u96fb\u78c1\u6ce2\u306e\u91cf\u3092\u793a\u3059\u6307\u6a19\u3067\u3059\u3002\u3088\u308a\u5177\u4f53\u7684\u306b\u306f\u3001\u7279\u5b9a\u306e\u65b9\u5411\u304b\u3089\u5165\u5c04\u3059\u308b\u96fb\u78c1\u6ce2\u3092\u30a2\u30f3\u30c6\u30ca\u304c\u3069\u308c\u3060\u3051\u52b9\u7387\u3088\u304f\u53d7\u4fe1\u3067\u304d\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u30a2\u30f3\u30c6\u30ca\u306e\u6027\u80fd\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3042\u308a\u3001\u901a\u4fe1\u54c1\u8cea\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<h2>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u3068\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306f\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3\uff08Gain\uff09\u3068\u3082\u5bc6\u63a5\u306b\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u304c\u3042\u308b\u65b9\u5411\u306b\u3069\u306e\u7a0b\u5ea6\u52b9\u7387\u7684\u306b\u653e\u5c04\u3059\u308b\u304b\u3092\u8868\u3059\u6307\u6a19\u3067\u3059\u3002\u3053\u308c\u306b\u57fa\u3065\u3044\u3066\u3001\u6709\u52b9\u9762\u7a4d\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<h2>\u6709\u52b9\u9762\u7a4d\u306e\u516c\u5f0f<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d \\( A_{e} \\) \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u516c\u5f0f\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nA_{e} = \\frac{\\lambda^{2} G}{4 \\pi}<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001<\/p>\n<ul>\n<li>\\( \\lambda \\)\uff1a\u96fb\u78c1\u6ce2\u306e\u6ce2\u9577<\/li>\n<li>\\( G \\)\uff1a\u30a2\u30f3\u30c6\u30ca\u306e\u30b2\u30a4\u30f3<\/li>\n<\/ul>\n<p>\u3053\u306e\u516c\u5f0f\u304b\u3089\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306f\u6ce2\u9577\u306e\u4e8c\u4e57\u306b\u6bd4\u4f8b\u3057\u3001\u30b2\u30a4\u30f3\u306b\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001\u6ce2\u9577\u304c\u9577\u304f\u306a\u308b\u307b\u3069\uff08\u4f4e\u5468\u6ce2\uff09\u3001\u307e\u305f\u30b2\u30a4\u30f3\u304c\u9ad8\u304f\u306a\u308b\u307b\u3069\uff08\u6307\u5411\u6027\u304c\u9ad8\u3044\u30a2\u30f3\u30c6\u30ca\uff09\u3001\u6709\u52b9\u9762\u7a4d\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u5177\u4f53\u7684\u306a\u8a08\u7b97\u4f8b<\/h2>\n<p>\u5177\u4f53\u7684\u306a\u4f8b\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u6ce2\u9577 \\( \\lambda \\) \u304c 1 \u30e1\u30fc\u30c8\u30eb\u3001\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3 \\( G \\) \u304c 10 \u306e\u5834\u5408\u306e\u6709\u52b9\u9762\u7a4d\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p>\\[<br \/>\nA_{e} = \\frac{1^{2} \\cdot 10}{4 \\pi} = \\frac{10}{4 \\pi} \\approx 0.796 \\text{ m}^2<br \/>\n\\]<\/p>\n<p>\u3053\u306e\u4f8b\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001\u7279\u5b9a\u306e\u6ce2\u9577\u3068\u30b2\u30a4\u30f3\u306e\u6761\u4ef6\u4e0b\u3067\u306e\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u3092\u7c21\u5358\u306b\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u6027\u80fd\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u6307\u6a19\u3067\u3059\u3002\u3053\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30f3\u30c6\u30ca\u8a2d\u8a08\u3084\u901a\u4fe1\u6027\u80fd\u306e\u6700\u9069\u5316\u306b\u5f79\u7acb\u3064\u3067\u3057\u3087\u3046\u3002\u516c\u5f0f\u3092\u4f7f\u3063\u3066\u5177\u4f53\u7684\u306a\u6570\u5024\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u52b9\u7387\u3084\u6027\u80fd\u3092\u3088\u308a\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30f3\u30c6\u30ca\u306f\u65e5\u5e38\u751f\u6d3b\u306e\u4e2d\u3067\u591a\u304f\u306e\u5834\u9762\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c6\u30ec\u30d3\u30a2\u30f3\u30c6\u30ca\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u5185\u8535\u30a2\u30f3\u30c6\u30ca\u3001Wi-Fi \u30eb\u30fc\u30bf\u30fc\u306a\u3069\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u9ad8\u54c1\u8cea\u306a\u901a\u4fe1\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6709\u52b9\u9762\u7a4d\u3068\u3044\u3046\u6982\u5ff5\u304c\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u4ee5\u4e0a\u306e\u5185\u5bb9\u3092\u3082\u3068\u306b\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306b\u3064\u3044\u3066\u306e\u7406\u89e3\u3092\u6df1\u3081\u3001\u3055\u3089\u306a\u308b\u5fdc\u7528\u3084\u7814\u7a76\u306b\u6d3b\u304b\u3057\u3066\u3044\u305f\u3060\u3051\u308c\u3070\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a2\u30f3\u30c6\u30ca\u306e\u6709\u52b9\u9762\u7a4d\u306b\u3064\u3044\u3066\u306e\u516c\u5f0f\u3001\u57fa\u672c\u7684\u306a\u6982\u8981\u3001\u8a08\u7b97\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3002\u30a2\u30f3\u30c6\u30ca\u30b2\u30a4\u30f3\u3068\u306e\u95a2\u9023\u3084\u5177\u4f53\u4f8b\u3082\u542b\u3080\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-209218","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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