{"id":167476,"date":"2024-04-27T12:29:30","date_gmt":"2024-04-27T12:29:30","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%82%bd%e3%83%8a%e3%83%bc%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0\/"},"modified":"2024-05-11T12:01:16","modified_gmt":"2024-05-11T12:01:16","slug":"%e3%82%bd%e3%83%8a%e3%83%bc%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%82%bd%e3%83%8a%e3%83%bc%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0\/","title":{"rendered":"\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0"},"content":{"rendered":"<p class=\"sidekick\">\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u6c34\u4e2d\u3067\u7269\u4f53\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306e\u97f3\u97ff\u53cd\u5c04\u6280\u8853\u3067\u3001\u6d77\u6d0b\u63a2\u67fb\u3084\u8ecd\u4e8b\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/05\/\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0.png\" alt=\"\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\"\/><\/p>\n<h2>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306f<\/h2>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306f\u3001\u97f3\u97ff\u4fe1\u53f7\u3092\u5229\u7528\u3057\u3066\u6c34\u4e2d\u306e\u7269\u4f53\u3092\u691c\u51fa\u3059\u308b\u6280\u8853\u3067\u3059\u3002\u30bd\u30ca\u30fc\uff08SONAR\uff09\u306f\u3001Sound Navigation And Ranging\u306e\u7565\u3067\u3001\u4e3b\u306b\u6d77\u6d0b\u3067\u306e\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u3001\u63a2\u67fb\u3001\u6f01\u696d\u3001\u8ecd\u4e8b\u76ee\u7684\u306a\u3069\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u767a\u4fe1\u5668\u304b\u3089\u9001\u308a\u51fa\u3055\u308c\u305f\u97f3\u6ce2\u304c\u5bfe\u8c61\u7269\u306b\u5f53\u305f\u308a\u3001\u53cd\u5c04\u3057\u3066\u623b\u3063\u3066\u304f\u308b\u30a8\u30b3\u30fc\uff08\u53cd\u97ff\uff09\u3092\u53d7\u4fe1\u5668\u304c\u62fe\u3046\u3053\u3068\u3067\u60c5\u5831\u3092\u5f97\u307e\u3059\u3002<\/p>\n<h2>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u57fa\u672c\u7684\u306a\u539f\u7406\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u95a2\u4fc2\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u97f3\u97ff\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u5909\u63db\u3055\u308c\u3001\u6c34\u4e2d\u306b\u97f3\u6ce2\u3068\u3057\u3066\u767a\u4fe1\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u97f3\u6ce2\u304c\u7269\u4f53\u306b\u5f53\u305f\u308a\u3001\u53cd\u5c04\u3055\u308c\u305f\u30a8\u30b3\u30fc\u304c\u53d7\u4fe1\u5668\u306b\u3088\u3063\u3066\u518d\u3073\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u5909\u63db\u3055\u308c\u3001\u7269\u4f53\u306e\u4f4d\u7f6e\u3084\u5f62\u72b6\u3001\u5927\u304d\u3055\u306a\u3069\u306e\u60c5\u5831\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u8981\u7d20<\/h2>\n<ul>\n<li><strong>\u30c8\u30e9\u30f3\u30b9\u30c7\u30e5\u30fc\u30b5\u30fc\uff1a<\/strong>\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u97f3\u6ce2\u306b\u3001\u305d\u3057\u3066\u97f3\u6ce2\u3092\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u306b\u5909\u63db\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u3067\u3059\u3002<\/li>\n<li><strong>\u9001\u4fe1\u6a5f\uff1a<\/strong>\u30c8\u30e9\u30f3\u30b9\u30c7\u30e5\u30fc\u30b5\u30fc\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3057\u3001\u97f3\u6ce2\u3092\u751f\u6210\u3055\u305b\u307e\u3059\u3002<\/li>\n<li><strong>\u53d7\u4fe1\u6a5f\uff1a<\/strong>\u30a8\u30b3\u30fc\u3092\u691c\u51fa\u3057\u3066\u96fb\u6c17\u4fe1\u53f7\u306b\u5909\u63db\u3057\u3001\u60c5\u5831\u3092\u89e3\u6790\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8868\u793a\u88c5\u7f6e\uff1a<\/strong>\u89e3\u6790\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u88c5\u7f6e\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u7a2e\u985e<\/h2>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306b\u306f\u5927\u304d\u304f\u5206\u3051\u3066\u3001\u53d7\u52d5\u30bd\u30ca\u30fc\u3068\u80fd\u52d5\u30bd\u30ca\u30fc\u306e\u4e8c\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u53d7\u52d5\u30bd\u30ca\u30fc\uff1a<\/strong>\u5468\u56f2\u304b\u3089\u306e\u97f3\uff08\u4f8b\u3048\u3070\u8239\u306e\u30a8\u30f3\u30b8\u30f3\u97f3\u3084\u6d77\u6d0b\u751f\u7269\u306e\u9cf4\u304d\u58f0\uff09\u3092\u508d\u53d7\u3057\u3001\u305d\u308c\u3092\u5206\u6790\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002<\/li>\n<li><strong>\u80fd\u52d5\u30bd\u30ca\u30fc\uff1a<\/strong>\u81ea\u3089\u304c\u767a\u3059\u308b\u97f3\u6ce2\u3092\u5229\u7528\u3057\u3066\u3001\u30a8\u30b3\u30fc\u306b\u3088\u308a\u7269\u4f53\u306e\u4f4d\u7f6e\u3084\u7279\u5fb4\u3092\u63a2\u77e5\u3059\u308b\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002<\/li>\n<\/ol>\n<h2>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u7269\u7406\u5b66\u7684\u80cc\u666f<\/h2>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u304c\u6a5f\u80fd\u3059\u308b\u80cc\u666f\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u7269\u7406\u5b66\u7684\u539f\u5247\u304c\u95a2\u4fc2\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u97f3\u6ce2\u306e\u4f1d\u642c\uff1a<\/strong>\u97f3\u6ce2\u306f\u6c34\u4e2d\u3067\u901f\u5ea6\u7d041,500 m\/s\u3067\u4f1d\u642c\u3057\u307e\u3059\u3002\u3053\u306e\u901f\u5ea6\u306f\u6c34\u6e29\u3084\u5869\u5206\u6fc3\u5ea6\u306b\u3088\u3063\u3066\u5909\u308f\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u53cd\u5c04\u306e\u6cd5\u5247\uff1a<\/strong>\u97f3\u6ce2\u306f\u7269\u4f53\u306b\u5f53\u305f\u308b\u3068\u53cd\u5c04\u3057\u307e\u3059\u3002\u3053\u306e\u53cd\u5c04\u3055\u308c\u305f\u97f3\u6ce2\uff08\u30a8\u30b3\u30fc\uff09\u3092\u6349\u3048\u308b\u3053\u3068\u3067\u7269\u4f53\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30c9\u30c3\u30d7\u30e9\u30fc\u52b9\u679c\uff1a<\/strong>\u904b\u52d5\u3057\u3066\u3044\u308b\u7269\u4f53\u304b\u3089\u53cd\u5c04\u3055\u308c\u308b\u97f3\u6ce2\u306f\u3001\u305d\u306e\u7269\u4f53\u304c\u8fd1\u3065\u3044\u3066\u3044\u308b\u3068\u304d\u306f\u5468\u6ce2\u6570\u304c\u9ad8\u304f\u3001\u9060\u3056\u304b\u3063\u3066\u3044\u308b\u3068\u304d\u306f\u5468\u6ce2\u6570\u304c\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u3053\u308c\u3089\u306e\u7269\u7406\u6cd5\u5247\u3092\u5229\u7528\u3057\u3066\u3001\u6b63\u78ba\u306a\u60c5\u5831\u3092\u53ce\u96c6\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30a8\u30b3\u30fc\u304c\u623b\u3063\u3066\u304f\u308b\u6642\u9593\u304b\u3089\u7269\u4f53\u307e\u3067\u306e\u8ddd\u96e2\u3092<\/p>\n<p>\\[ \u8ddd\u96e2 = \\frac{(\u6642\u9593 \\times \u97f3\u306e\u901f\u5ea6)}{2} \\]<\/p>\n<p>\u3068\u3044\u3046\u5358\u7d14\u306a\u8a08\u7b97\u3067\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u5272\u308b2\u306f\u3001\u97f3\u6ce2\u304c\u5f80\u5fa9\u3059\u308b\u8ddd\u96e2\u3092\u8003\u616e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u539f\u7406\u3092\u99c6\u4f7f\u3057\u305f\u97f3\u6ce2\u306e\u53cd\u5c04\u3092\u5229\u7528\u3057\u3066\u3001\u6c34\u4e2d\u306e\u7269\u4f53\u3092\u63a2\u77e5\u3059\u308b\u9ad8\u5ea6\u306a\u6280\u8853\u3067\u3059\u3002\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u7269\u7406\u5b66\u306e\u57fa\u672c\u6cd5\u5247\u306b\u6df1\u304f\u6839\u3056\u3057\u3066\u304a\u308a\u3001\u6d77\u6d0b\u5b66\u3001\u8239\u8236\u3001\u6d77\u6d0b\u63a2\u67fb\u306a\u3069\u591a\u5c90\u306b\u308f\u305f\u308b\u5206\u91ce\u3067\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u7406\u89e3\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u3001\u305d\u3057\u3066\u97f3\u97ff\u5b66\u306e\u57fa\u672c\u7684\u306a\u77e5\u8b58\u3092\u5b9f\u4e16\u754c\u306e\u6280\u8853\u3078\u3068\u5fdc\u7528\u3059\u308b\u7d20\u6674\u3089\u3057\u3044\u4e8b\u4f8b\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30bd\u30ca\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u6c34\u4e2d\u3067\u7269\u4f53\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306e\u97f3\u97ff\u53cd\u5c04\u6280\u8853\u3067\u3001\u6d77\u6d0b\u63a2\u67fb\u3084\u8ecd\u4e8b\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":190076,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[90],"tags":[91],"class_list":["post-167476","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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