{"id":209175,"date":"2024-03-21T14:06:25","date_gmt":"2024-03-21T14:06:25","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e7%b7%9a%e5%bd%a2%e5%81%8f%e5%85%89%e3%81%ae%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/"},"modified":"2024-05-17T15:08:23","modified_gmt":"2024-05-17T15:08:23","slug":"%e7%b7%9a%e5%bd%a2%e5%81%8f%e5%85%89%e3%81%ae%e5%bc%8f-%e8%a7%a3%e8%aa%ac%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\/%e7%b7%9a%e5%bd%a2%e5%81%8f%e5%85%89%e3%81%ae%e5%bc%8f-%e8%a7%a3%e8%aa%ac%e3%81%a8%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u7dda\u5f62\u504f\u5149\u306e\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5"},"content":{"rendered":"

\u7dda\u5f62\u504f\u5149\u306e\u57fa\u672c\u6982\u5ff5\u3068\u305d\u306e\u96fb\u5834\u30d9\u30af\u30c8\u30eb\u8868\u73fe\u306e\u6570\u5b66\u7684\u5f0f\u3001\u5177\u4f53\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u7dda\u5f62\u504f\u5149\u306e\u5f0f | \u89e3\u8aac\u3068\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

\u7dda\u5f62\u504f\u5149\u306b\u95a2\u3059\u308b\u77e5\u8b58\u306f\u3001\u5149\u5b66\u3084\u96fb\u78c1\u6c17\u5b66\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u91cd\u8981\u3067\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u7dda\u5f62\u504f\u5149\u306e\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3001\u305d\u3057\u3066\u305d\u308c\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306e\u6570\u5b66\u7684\u5f0f\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5177\u4f53\u7684\u306a\u8a08\u7b97\u65b9\u6cd5\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u7dda\u5f62\u504f\u5149\u3068\u306f\uff1f<\/h2>\n

\u307e\u305a\u3001\u7dda\u5f62\u504f\u5149\u3068\u306f\u5149\u306e\u96fb\u5834\u304c\u4e00\u3064\u306e\u5e73\u9762\u5185\u3067\u632f\u52d5\u3059\u308b\u72b6\u614b\u306e\u3053\u3068\u3067\u3059\u3002\u901a\u5e38\u306e\u5149\u306f\u3001\u96fb\u5834\u304c\u69d8\u3005\u306a\u65b9\u5411\u306b\u30e9\u30f3\u30c0\u30e0\u306b\u632f\u52d5\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u7dda\u5f62\u504f\u5149\u3067\u306f\u7279\u5b9a\u306e\u65b9\u5411\u306b\u306e\u307f\u632f\u52d5\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u504f\u5149\u30d5\u30a3\u30eb\u30bf\u30fc\u3084\u305d\u306e\u4ed6\u306e\u5149\u5b66\u6a5f\u5668\u3092\u7528\u3044\u305f\u69d8\u3005\u306a\u5fdc\u7528\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u96fb\u5834\u30d9\u30af\u30c8\u30eb\u306e\u8868\u73fe<\/h2>\n

\u504f\u5149\u3055\u308c\u305f\u5149\u306f\u3001\u96fb\u5834\u30d9\u30af\u30c8\u30eb E<\/em> \u304c\u6642\u9593 t<\/em> \u3068\u4f4d\u7f6e x<\/em> \u306b\u4f9d\u5b58\u3057\u3066\u5909\u5316\u3057\u307e\u3059\u3002\u7dda\u5f62\u504f\u5149\u306e\u5834\u5408\u3001\u96fb\u5834\u30d9\u30af\u30c8\u30eb\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n

\u4f8b\uff1a<\/b><\/p>\n

\n\\[\n\\mathbf{E}(x,t) = \\mathbf{E}_0 \\cos(kx - \\omega t + \\phi)\n\\]\n<\/pre>\n
\u3053\u3053\u3067\uff1a<\/p>\n
    \n
  • \\(\\mathbf{E}_0\\)\uff1a\u96fb\u5834\u306e\u632f\u5e45<\/li>\n
  • \\(k\\)\uff1a\u6ce2\u6570\u3001\\(2\\pi \/ \\lambda\\) \uff08\\(\\lambda\\)\u306f\u6ce2\u9577\uff09<\/li>\n
  • \\(\\omega\\)\uff1a\u89d2\u5468\u6ce2\u6570\u3001\\(2\\pi f\\)\uff08\\(f\\)\u306f\u5468\u6ce2\u6570\uff09<\/li>\n
  • \\(\\phi\\)\uff1a\u4f4d\u76f8<\/li>\n<\/ul>\n
    \u8a08\u7b97\u65b9\u6cd5<\/h2>\n
    \u5177\u4f53\u7684\u306a\u8a08\u7b97\u3092\u884c\u3046\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u4f8b\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u6ce2\u9577 \\( \\lambda = 500 \\, \\text{nm} \\)\u3001\u5468\u6ce2\u6570 \\( f = 6 \\times 10^{14} \\, \\text{Hz} \\)\u3001\u632f\u5e45 \\( E_0 = 1 \\, \\text{V\/m} \\) \u306e\u7dda\u5f62\u504f\u5149\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n
    1. \u6ce2\u6570\u306e\u8a08\u7b97<\/h3>\n
    \u6ce2\u6570 \\(k\\) \u306f\u6ce2\u9577\u304b\u3089\u6b21\u306e\u3088\u3046\u306b\u6c42\u3081\u3089\u308c\u307e\u3059\uff1a<\/p>\n
    \n\\[\nk = \\frac{2\\pi}{\\lambda}\n\\]\n\\[\nk = \\frac{2\\pi}{500 \\times 10^{-9} \\, \\text{m}} = 1.26 \\times 10^7 \\, \\text{m}^{-1}\n\\]\n<\/pre>\n
    2. \u89d2\u5468\u6ce2\u6570\u306e\u8a08\u7b97<\/h3>\n
    \u89d2\u5468\u6ce2\u6570 \\( \\omega \\) \u306f\u5468\u6ce2\u6570\u304b\u3089\u6b21\u306e\u3088\u3046\u306b\u6c42\u3081\u3089\u308c\u307e\u3059\uff1a<\/p>\n
    \n\\[\n\\omega = 2\\pi f\n\\]\n\\[\n\\omega = 2\\pi \\times 6 \\times 10^{14} \\, \\text{Hz} = 3.77 \\times 10^{15} \\, \\text{rad\/s}\n\\]\n<\/pre>\n
    3. \u96fb\u5834\u30d9\u30af\u30c8\u30eb\u306e\u5f0f<\/h3>\n
    \u3053\u308c\u3089\u306e\u5024\u3092\u4ee3\u5165\u3057\u3066\u3001\u96fb\u5834\u30d9\u30af\u30c8\u30eb\u306e\u5f0f\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n
    \n\\[\n\\mathbf{E}(x,t) = 1 \\, \\text{V\/m} \\cos(1.26 \\times 10^7 \\, \\text{m}^{-1} \\cdot x - 3.77 \\times 10^{15} \\, \\text{rad\/s} \\cdot t)\n\\]\n<\/pre>\n
    \u7d50\u8ad6<\/h2>\n
    \u672c\u8a18\u4e8b\u3067\u306f\u3001\u7dda\u5f62\u504f\u5149\u306e\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3068\u3001\u96fb\u5834\u30d9\u30af\u30c8\u30eb\u3092\u7528\u3044\u305f\u305d\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u7dda\u5f62\u504f\u5149\u306f\u5149\u5b66\u3084\u96fb\u78c1\u6c17\u5b66\u306e\u591a\u304f\u306e\u5fdc\u7528\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u5149\u5b66\u6a5f\u5668\u306e\u7406\u89e3\u3084\u8a2d\u8a08\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u3001\u3055\u3089\u306b\u6df1\u304f\u5b66\u7fd2\u3092\u9032\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
    \u4eca\u5f8c\u3082\u69d8\u3005\u306a\u7269\u7406\u304a\u3088\u3073\u5de5\u5b66\u306e\u6982\u5ff5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u306e\u3067\u3001\u3069\u3046\u305e\u3054\u671f\u5f85\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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