{"id":62565,"date":"2015-04-21T10:50:39","date_gmt":"2015-04-21T02:50:39","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=62565"},"modified":"2021-10-06T16:11:41","modified_gmt":"2021-10-06T08:11:41","slug":"%e9%9b%bb%e7%a3%81%e6%b3%a2%e5%8f%8d%e5%b0%84%e5%8f%8a%e6%8a%98%e5%b0%84%e7%9a%84%e5%bc%b7%e5%ba%a6%e5%92%8c%e5%85%a5%e5%b0%84%e8%a7%92%e7%9a%84%e5%87%bd%e6%95%b8%e9%97%9c%e4%bf%82","status":"publish","type":"post","link":"http:\/\/localhost\/%e9%9b%bb%e7%a3%81%e6%b3%a2%e5%8f%8d%e5%b0%84%e5%8f%8a%e6%8a%98%e5%b0%84%e7%9a%84%e5%bc%b7%e5%ba%a6%e5%92%8c%e5%85%a5%e5%b0%84%e8%a7%92%e7%9a%84%e5%87%bd%e6%95%b8%e9%97%9c%e4%bf%82\/","title":{"rendered":"\u96fb\u78c1\u6ce2\u53cd\u5c04\u53ca\u6298\u5c04\u7684\u5f37\u5ea6\u548c\u5165\u5c04\u89d2\u7684\u51fd\u6578\u95dc\u4fc2"},"content":{"rendered":"<div class=\"pf-content\"><p><span style=\"color: #ff6600;\"><strong>\u96fb\u78c1\u6ce2\u53cd\u5c04\u53ca\u6298\u5c04\u7684\u5f37\u5ea6\u548c\u5165\u5c04\u89d2\u7684\u51fd\u6578\u95dc\u4fc2<br \/>\n(Intensity of Reflected and Refracted EM Waves as a Function of Incidence Angle)<\/strong><\/span><br \/>\n<span style=\"color: #008000;\"><strong>\u52a0\u5dde\u5927\u5b78\u67cf\u514b\u840a\u5206\u6821\u7269\u7406\u7cfb 2012 \u76e7\u5955\u9293<\/strong><\/span><\/p>\n<p><span style=\"color: #800080;\"><strong>I. \u5b9a\u7fa9\u53ca\u57fa\u672c\u6982\u5ff5<\/strong><\/span><\/p>\n<p>\u96fb\u78c1\u6ce2\u5f9e\u4e00\u500b\u4ecb\u8cea\u50b3\u905e\u5230\u53e6\u4e00\u500b\u4ecb\u8cea\u6642\uff0c\u53ea\u6709\u4e00\u90e8\u5206\u7684\u96fb\u78c1\u6ce2\u6703\u9032\u5165\u65b0\u7684\u4ecb\u8cea\uff0c\u800c\u5269\u4e0b\u7684\u6703\u88ab\u4ecb\u9762\u6240\u53cd\u5c04\u3002\u9032\u5165\u65b0\u4ecb\u8cea\u7684\u96fb\u78c1\u6ce2\u7a31\u70ba\u6298\u5c04\u6ce2\uff0c\u800c\u88ab\u53cd\u5c04\u7684\u7a31\u70ba\u53cd\u5c04\u6ce2\u3002\u5728\u7406\u60f3\u60c5\u6cc1\u4e4b\u4e0b\uff0c\u5165\u5c04\u7684\u5f37\u5ea6\u6703\u7b49\u65bc\u53cd\u5c04\u548c\u6298\u5c04\u5f37\u5ea6\u7684\u7e3d\u548c\uff0c\u4f46\u53cd\u5c04\u548c\u6298\u5c04\u5f37\u5ea6\u7684\u76f8\u5c0d\u5927\u5c0f\uff0c\u5247\u548c\u5165\u5c04\u89d2\u6709\u95dc\u3002\u5728\u8a0e\u8ad6\u5f37\u5ea6\u548c\u5165\u5c04\u89d2\u7684\u95dc\u4fc2\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u5b9a\u7fa9\u5e7e\u500b\u540d\u8a5e\u548c\u7269\u7406\u91cf\u3002<!--more--><\/p>\n<p><strong>(a)\u5165\u5c04\u5e73\u9762\uff1a<\/strong>\u5165\u5c04\u6ce2\u548c\u6cd5\u7dda\u6240\u5728\u7684\u5e73\u9762\u7a31\u70ba\u5165\u5c04\u5e73\u9762\u3002\u5165\u5c04\u6ce2\u6253\u5728\u4ecb\u9762\u4e0a\u5f8c\uff0c\u6298\u5c04\u6ce2\u548c\u53cd\u5c04\u6ce2\u4e5f\u6703\u5728\u5165\u5c04\u5e73\u9762\u4e0a\u3002<\/p>\n<p><strong>(b)\u6975\u5316\u65b9\u5411\uff1a<\/strong>\u96fb\u78c1\u6ce2\u662f\u7531\u4ea4\u66ff\u9707\u76ea\u7684\u96fb\u5834\u548c\u78c1\u5834\u6240\u7d44\u6210\uff0c\u800c\u96fb\u5834\u9707\u76ea\u7684\u65b9\u5411\uff0c\u7a31\u70ba\u8a72\u96fb\u78c1\u6ce2\u7684\u6975\u5316\u65b9\u5411\u3002<\/p>\n<p><strong>(c)\u6298\u5c04\u7387\uff1a<\/strong>\u96fb\u78c1\u6ce2\u5728\u4ecb\u8cea\u4e2d\u50b3\u905e\u901f\u5ea6\u70ba $$v=c\/n$$\uff0c\u5176\u4e2d $$n=\\sqrt{\\epsilon\\mu\/\\epsilon_0\\mu_0}$$\u00a0\u70ba\u8a72\u4ecb\u8cea\u7684\u6298\u5c04\u7387\u3002$$\\epsilon$$\u00a0\u662f\u4ecb\u8cea\u7684\u96fb\u5bb9\u7387\uff0c$$\\mu$$\u00a0\u662f\u4ecb\u8cea\u7684\u78c1\u5c0e\u7387\uff0c\u800c\u00a0$$\\epsilon_0$$\u53ca\u00a0$$\\mu_0$$\u00a0\u5247\u70ba\u771f\u7a7a\u4e2d\u7684\u96fb\u5bb9\u7387\u53ca\u78c1\u5c0e\u7387\u3002<\/p>\n<p><strong>(d)\u5047\u8a2d\u96fb\u78c1\u6ce2\u5f9e\u4ecb\u8cea1\u5165\u5c04\u5230\u4ecb\u8cea2\uff0c\u5165\u5c04\u89d2\u70ba $$\\theta_1$$\uff0c\u6298\u5c04\u89d2\u70ba $$\\theta_2$$\uff0c\u6211\u5011\u5b9a\u7fa9\u4e00\u500b\u7269\u7406\u91cf $$\\alpha$$<\/strong>\uff1a<\/p>\n<p style=\"text-align: center;\">$$\\displaystyle\\alpha=\\frac{\\cos\\theta_2}{\\cos{\\theta_1}}$$<\/p>\n<p>\u7531\u53f8\u4e43\u8033\u5b9a\u5f8b\u77e5\uff0c\u5165\u5c04\u89d2\u53ca\u6298\u5c04\u89d2\u7684\u95dc\u4fc2\u70ba $$n_1\\sin\\theta_1=n_2\\sin\\theta_2$$\uff0c<\/p>\n<p>$$n_1$$ \u548c\u00a0$$n_2$$\u00a0\u5206\u5225\u662f\u4ecb\u8cea1\u548c\u4ecb\u8cea2\u7684\u6298\u5c04\u7387\u3002\u6240\u4ee5 $$\\alpha$$\u00a0\u53c8\u53ef\u4ee5\u8868\u793a\u6210<\/p>\n<p style=\"text-align: center;\">$$\\alpha=\\displaystyle\\frac{\\sqrt{1-[(n_1\/n_2)\\sin\\theta_1]^2}}{\\cos\\theta_1}$$<\/p>\n<p><strong>(e)\u5b9a\u7fa9\u53e6\u4e00\u500b\u7269\u7406\u91cf $$\\beta$$\uff1a<\/strong><\/p>\n<p style=\"text-align: center;\">$$\\beta=\\displaystyle\\frac{\\mu_1n_2}{\\mu_2n_1}$$<\/p>\n<p>\u5b9a\u7fa9 $$\\alpha$$\u00a0\u53ca $$\\beta$$\u00a0\u9019\u5169\u500b\u7269\u7406\u91cf\u7684\u597d\u8655\u662f\u53ef\u4ee5\u7c21\u5316\u53cd\u5c04\u548c\u6298\u5c04\u7684\u5f37\u5ea6\u516c\u5f0f\u3002<\/p>\n<p><span style=\"color: #800080;\"><strong>II. \u53cd\u5c04\u53ca\u6298\u5c04\u5f37\u5ea6\u516c\u5f0f<\/strong><\/span><\/p>\n<p>\u53cd\u5c04\u548c\u6298\u5c04\u5f37\u5ea6\u7684\u51fd\u6578\u5f62\u5f0f\uff0c\u548c\u96fb\u78c1\u6ce2\u7684\u6975\u5316\u65b9\u5411\u6709\u95dc\uff0c\u4ee5\u4e0b\u5206\u5169\u985e\u8a0e\u8ad6\uff1a<\/p>\n<p><strong>(a) \u6975\u5316\u65b9\u5411\u8207\u5165\u5c04\u5e73\u9762\u5e73\u884c<\/strong><\/p>\n<p>\u6240\u8b02\u6975\u5316\u65b9\u5411\u5e73\u884c\u5165\u5c04\u5e73\u9762\uff0c\u6307\u7684\u5c31\u662f\u96fb\u5834\u300c\u8eba\u300d\u5728\u5165\u5c04\u5e73\u9762\u4e0a\u3002<br \/>\n\u5047\u5c04\u5165\u5c04\u6ce2\u7684\u5f37\u5ea6\u70ba $$I_I$$\uff0c\u90a3\u9ebc\u53cd\u5c04\u6ce2\u7684\u5f37\u5ea6 $$I_R$$\u00a0\u5247\u662f<\/p>\n<p style=\"text-align: center;\">$$I_R=\\left|\\displaystyle\\frac{\\alpha-\\beta}{\\alpha+\\beta}\\right|^2I_I$$<\/p>\n<p>\u800c\u6298\u5c04\u6ce2\u7684\u5f37\u5ea6 $$I_T$$\u00a0\u70ba<\/p>\n<p style=\"text-align: center;\">$$I_T=\\alpha\\beta\\left|\\displaystyle\\frac{2}{\\alpha+\\beta}\\right|^2I_I$$<\/p>\n<p>\u5982\u679c $$n_1=1$$\uff0c$$n_2=1.5$$\uff0c$$\\mu_1=\\mu_2=\\mu_0$$\uff0c\u90a3\u9ebc\uff0c\u5c07 $$I_R\/I_I$$(\u53cd\u5c04\u5f37\u5ea6\u8207\u5165\u5c04\u5f37\u5ea6\u6bd4\u503c) \u53ca $$I_T\/I_I$$\u00a0(\u6298\u5c04\u5f37\u5ea6\u8207\u5165\u5c04\u5f37\u5ea6\u6bd4\u503c) \u5c0d\u5165\u5c04\u89d2 $$\\theta_1$$\u00a0\u4f5c\u5716\u53ef\u5f97\u5716\u4e00(a)\u3002<\/p>\n<div id=\"attachment_68025\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p1a.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68025\" class=\"wp-image-68025\" src=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p1a.png\" alt=\"62565_p1a\" width=\"400\" height=\"249\" srcset=\"http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p1a.png 797w, http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p1a-300x187.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-68025\" class=\"wp-caption-text\">\u5716\u4e00(a)<\/p><\/div>\n<p>\u5716\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u5f9e\u5165\u5c04\u89d2 $$\\theta_1=0$$\u00a0\u958b\u59cb\uff0c\u6298\u5c04\u6ce2\u7684\u5f37\u5ea6\u7de9\u6162\u905e\u589e\uff0c\u800c\u53cd\u5c04\u6ce2\u5f37\u5ea6\u5247\u7de9\u6162\u905e\u6e1b\uff0c\u5230\u67d0\u4e00\u7279\u5b9a\u89d2\u5ea6\u6642\uff0c\u53cd\u5c04\u6ce2\u7684\u5f37\u5ea6\u6703\u905e\u6e1b\u5230\u96f6\uff0c\u9019\u500b\u89d2\u5ea6\u7a31\u70ba\u5e03\u9b6f\u65af\u7279\u89d2\uff0c\u5b83\u51fa\u73fe\u5728 $$I_R=0$$\u00a0\u7684\u77ac\u9593\u3002\u7c21\u55ae\u8a08\u7b97\u5f8c\u53ef\u77e5\uff0c\u5e03\u9b6f\u65af\u7279\u89d2 $$\\theta_B$$\u00a0\u6eff\u8db3<\/p>\n<p style=\"text-align: center;\">$$\\sin^2\\theta_B=\\displaystyle\\frac{1-\\beta^2}{(n_1\/n_2)^2-\\beta^2}$$<\/p>\n<p>\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u5e03\u9b6f\u65af\u7279\u89d2\u4e0d\u4e00\u5b9a\u5b58\u5728\u3002\u5982\u679c\u4e0a\u5f0f\u7b49\u865f\u53f3\u908a\u7684\u6578\u503c\u4e0d\u662f\u4ecb\u65bc $$0$$ \u8207 $$1$$ \u4e4b\u9593\uff0c\u90a3\u9ebc\u5c31\u4ee3\u8868 $$\\theta_B$$\u00a0\u6c92\u6709\u89e3\uff0c\u53cd\u5c04\u5f37\u5ea6\u6c38\u9060\u4e0d\u6703\u662f $$0$$\u3002\u7136\u800c\uff0c\u5c0d\u65bc\u5e38\u898b\u7684\u7269\u8cea\u800c\u8a00\uff0c\u78c1\u5c0e\u7387 $$\\mu$$\u00a0\u7684\u6578\u503c\u5927\u7d04\u548c\u771f\u7a7a\u78c1\u5c0e\u7387 $$\\mu_0$$\u00a0\u76f8\u540c\uff0c\u5728\u9019\u6a23\u7684\u8fd1\u4f3c\u4e0b\uff0c$$\\theta_B$$\u00a0\u6c38\u9060\u6709\u89e3\uff1a<\/p>\n<p style=\"text-align: center;\">$$\\displaystyle\\theta_B\\approx \\tan^{-1}\\frac{n_2}{n_1}$$<\/p>\n<p>\u5229\u7528\u53f8\u4e43\u8033\u5b9a\u5f8b\u53ef\u4ee5\u5f97\u77e5\uff0c\u6b64\u6642\u6298\u5c04\u7dda\u548c (\u6d88\u5931\u7684\uff09\u53cd\u5c04\u7dda\u9593\u7684\u593e\u89d2\u525b\u597d\u662f $$90$$ \u5ea6\u3002\u81f3\u65bc\u6298\u5c04\u7dda\u548c\u53cd\u5c04\u7dda\u9593\u593e\u89d2\u6210 $$90$$ \u5ea6\u6642\uff0c\u53cd\u5c04\u6ce2\u70ba\u4f55\u6703\u6d88\u5931\uff0c\u53ef\u4ee5\u7531\u96fb\u5076\u6975\u7684\u8f3b\u5c04\u7406\u8ad6\u4f86\u89e3\u91cb\uff0c\u5728\u6b64\u4e0d\u6df1\u5165\u8a0e\u8ad6\u3002<\/p>\n<p>\u7531\u5716\u4e2d\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0c\u904e\u4e86\u5e03\u9b6f\u65af\u7279\u89d2\u4e4b\u5f8c\uff0c\u6298\u5c04\u6ce2\u5f37\u5ea6\u5c31\u4e00\u8def\u905e\u6e1b\u5230\u96f6\uff0c\u4ee3\u8868\u5165\u5c04\u6ce2\u5982\u679c\u6c34\u5e73\u5730\u5165\u5c04\u5230\u4ecb\u9762\u4e0a\uff0c\u5e7e\u4e4e\u6240\u6709\u80fd\u91cf\u90fd\u6703\u88ab\u4ecb\u9762\u6240\u53cd\u5c04\uff0c\u9020\u6210\u7729\u5149\u3002<\/p>\n<div id=\"attachment_68026\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p1b.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68026\" class=\"wp-image-68026\" src=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p1b.png\" alt=\"62565_p1b\" width=\"400\" height=\"232\" srcset=\"http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p1b.png 939w, http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p1b-300x174.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-68026\" class=\"wp-caption-text\">\u5716\u4e00(b)<\/p><\/div>\n<p>\u5982\u679c $$n_1=1.5$$\uff0c$$n_2=1$$\uff0c$$\\mu_1=\\mu_2=\\mu_0$$\uff0c\u4ee3\u8868\u5165\u5c04\u5149\u5f9e\u5bc6\u4ecb\u8cea\u50b3\u905e\u5230\u758f\u4ecb\u8cea\uff0c\u5728\u9019\u60c5\u6cc1\u4e0b\uff0c\u5982\u5716\u4e00(b) \u6240\u793a\uff0c\u5165\u5c04\u89d2\u7d93\u904e\u5e03\u9b6f\u65af\u7279\u89d2\u4e4b\u5f8c\uff0c\u5c1a\u672a\u5230\u9054 $$90$$ \u5ea6\u4e4b\u524d\uff0c$$I_R\/I_I$$\u00a0\u5c31\u905e\u589e\u5230\u6700\u5927\u503c $$1$$\uff0c\u4ee3\u8868\u6240\u6709\u80fd\u91cf\u90fd\u88ab\u4ecb\u9762\u6240\u53cd\u5c04\uff0c\u9019\u500b\u73fe\u8c61\u7a31\u70ba\u5168\u53cd\u5c04\uff0c\u800c\u6b64\u6642\u7684\u5165\u5c04\u89d2\u7a31\u70ba\u81e8\u754c\u89d2\u3002\u6b64\u6642\u6298\u5c04\u6ce2\u6703\u525b\u597d\u6cbf\u8457\u4ecb\u9762\u884c\u9032\uff0c\u800c\u4e0d\u6703\u50b3\u905e\u80fd\u91cf\u5230\u4ecb\u8cea2\u3002\u8d85\u904e\u81e8\u754c\u89d2\u4e4b\u5f8c\uff0c$$I_R\/I_I$$ \u6578\u503c\u4ecd\u7136\u7dad\u6301\u5728 $$1$$ \u4e0d\u8b8a\uff0c\u7136\u800c\u4ecb\u8cea2\u4e2d\u5176\u5be6\u4e26\u975e\u5b8c\u5168\u6c92\u6709\u96fb\u78c1\u6ce2\uff1a\u4ecb\u8cea2\u4e2d\u7684\u96fb\u78c1\u6ce2\u4e00\u6a23\u4ecd\u7136\u6cbf\u8457\u4ecb\u9762\u884c\u9032\uff0c\u4f46\u662f\u6df1\u5165\u4ecb\u8cea2\u7684\u539a\u5ea6\u958b\u59cb\u8b8a\u6dfa\uff0c\u9019\u7a2e\u6ce2\u7a31\u4e4b\u70ba\u8870\u6e1b\u6ce2\uff08evanescent wave\uff09\u3002\u5982\u679c\u7e7c\u7e8c\u589e\u52a0\u5165\u5c04\u89d2\uff0c\u90a3\u9ebc\u8870\u6e1b\u6ce2\u5728\u4ecb\u8cea2\u4e2d\u7684\u539a\u5ea6\u5c31\u6703\u8d8a\u4f86\u8d8a\u8584\uff0c\u5e7e\u4e4e\u53ef\u4ee5\u5ffd\u7565\u3002\u9019\u4e9b\u73fe\u8c61\u6c92\u8fa6\u6cd5\u5f9e\u6298\u5c04\u5f37\u5ea6\u516c\u5f0f\u770b\u51fa\u4f86\uff0c\u5fc5\u9808\u85c9\u7531\u89e3\u99ac\u514b\u58eb\u5a01\u65b9\u7a0b\u5f0f\u624d\u80fd\u770b\u51fa\u8a73\u7d30\u7684\u7269\u7406\u73fe\u8c61\uff0c\u6240\u4ee5\u5728\u6b64\u4e0d\u6df1\u5165\u8a0e\u8ad6\u3002<\/p>\n<p><strong>(b)\u6975\u5316\u65b9\u5411\u8207\u5165\u5c04\u5e73\u9762\u5782\u76f4<\/strong><\/p>\n<p>\u7531\u65bc\u6975\u5316\u65b9\u5411\u7684\u4e0d\u540c\uff0c\u53cd\u5c04\u5f37\u5ea6\u548c\u6298\u5c04\u5f37\u5ea6\u7684\u516c\u5f0f\u4e5f\u4e0d\u540c\uff1a<\/p>\n<p style=\"text-align: center;\">$$I_R=\\left|\\displaystyle\\frac{1-\\alpha\\beta}{1+\\alpha\\beta}^2I_I\\right|$$<\/p>\n<p style=\"text-align: center;\">$$I_T=\\alpha\\beta\\left|\\displaystyle\\frac{2}{1+\\alpha\\beta}^2I_I\\right|$$<\/p>\n<div id=\"attachment_68027\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p2a.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68027\" class=\"wp-image-68027\" src=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p2a.png\" alt=\"62565_p2a\" width=\"400\" height=\"250\" srcset=\"http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p2a.png 1016w, http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p2a-300x187.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-68027\" class=\"wp-caption-text\">\u5716\u4e8c(a)<\/p><\/div>\n<p>\u5728\u9019\u500b\u60c5\u6cc1\u4e4b\u4e0b\uff0c\u5982\u679c\u4e00\u6a23\u5047\u8a2d $$n_1=1$$\uff0c$$n_2=1.5$$\uff0c$$\\mu_1=\\mu_2=\\mu_0$$\uff0c\u5247 $$I_R$$\u00a0\u53ca $$I_T$$\u00a0\u5c0d\u5165\u5c04\u89d2 $$\\theta_1$$\u00a0\u4f5c\u5716\u53ef\u5f97\u5716\u4e8c(a)\u3002\u5f9e\u5716\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u53cd\u5c04\u5f37\u5ea6\u4e00\u8def\u905e\u589e\uff0c\u800c\u6298\u5c04\u5f37\u5ea6\u4e00\u8def\u905e\u6e1b\uff0c\u4e2d\u9593\u4e26\u6c92\u6709\u5e03\u9b6f\u65af\u7279\u89d2\u3002\u4f46\u56b4\u683c\u4f86\u8aaa\u5e03\u9b6f\u65af\u7279\u89d2\u9084\u662f\u6709\u53ef\u80fd\u5b58\u5728\uff1a\u5047\u8a2d $$I_R=0$$\uff0c\u53ef\u77e5\u5e03\u9b6f\u65af\u7279\u89d2\u5fc5\u9808\u6eff\u8db3<\/p>\n<p style=\"text-align: center;\">$$\\cos^2\\theta_B=\\displaystyle\\frac{1-(n_2\/n_1)^2}{1-(\\mu_2\/\\mu_1)^2}$$<\/p>\n<p>\u5c0d\u65bc\u5e38\u898b\u7684\u7269\u8cea\u800c\u8a00\uff0c$$\\mu_1$$\u00a0\u548c $$\\mu_2$$\u00a0\u6578\u503c\u5e7e\u4e4e\u76f8\u540c\uff0c\u6240\u4ee5\u4e0a\u5f0f\u7b49\u865f\u53f3\u908a\u5e7e\u4e4e\u662f\u7121\u7aae\u5927\uff0c\u6240\u4ee5 $$\\theta_B$$\u00a0\u901a\u5e38\u6c92\u6709\u89e3\u3002\u5f9e\u5716\u4e2d\u4e5f\u53ef\u4ee5\u770b\u51fa\uff0c\u7576\u5165\u5c04\u89d2\u63a5\u8fd1\u4e5d\u5341\u5ea6\u6642\uff0c\u6298\u5c04\u5f37\u5ea6\u8da8\u8fd1\u65bc $$0$$\uff0c\u6240\u4ee5\u4ecd\u7136\u6709\u7729\u5149\u7522\u751f\u3002<\/p>\n<div id=\"attachment_68028\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p2b.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68028\" class=\"wp-image-68028\" src=\"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/wp-content\/uploads\/2015\/04\/62565_p2b.png\" alt=\"62565_p2b\" width=\"400\" height=\"232\" srcset=\"http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p2b.png 874w, http:\/\/localhost\/wp-content\/uploads\/2015\/04\/62565_p2b-300x174.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-68028\" class=\"wp-caption-text\">\u5716\u4e8c(b)<\/p><\/div>\n<p>\u5982\u679c $$n_1=1.5$$\uff0c$$n_2=1$$\uff0c$$\\mu_1=\\mu_2=\\mu_0$$\uff0c\u4ee3\u8868\u5165\u5c04\u5149\u5f9e\u5bc6\u4ecb\u8cea\u50b3\u905e\u5230\u758f\u4ecb\u8cea\uff0c\u5728\u9019\u60c5\u6cc1\u4e0b\uff0c\u5982\u5716\u4e8c(b) \u6240\u793a\uff0c\u5728\u5165\u5c04\u89d2\u5c1a\u672a\u5230\u9054 $$90$$ \u5ea6\u6642\uff0c\u5c31\u6703\u5148\u9054\u5230\u81e8\u754c\u89d2\uff0c\u800c\u767c\u751f\u5168\u53cd\u5c04\u3002\u767c\u751f\u5168\u53cd\u5c04\u6642\uff0c\u53cd\u5c04\u5f37\u5ea6\u7b49\u65bc\u5165\u5c04\u5f37\u5ea6\uff0c\u800c\u4ecb\u97622\u5167\u7684\u6298\u5c04\u6ce2\u958b\u59cb\u8b8a\u6210\u8870\u6e1b\u6ce2\uff0c\u5176\u73fe\u8c61\u8ddf\u4e0a\u4e00\u5206\u985e\u6240\u63cf\u8ff0\u7684\u72c0\u6cc1\u76f8\u540c\u3002<\/p>\n<hr \/>\n<p><strong>\u53c3\u8003\u6587\u737b<\/strong><\/p>\n<ol>\n<li>Griffiths, D. J. (2012), Introduction to Electrodynamics, 4th edition. Pearson.<\/li>\n<\/ol>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u96fb\u78c1\u6ce2\u53cd\u5c04\u53ca\u6298\u5c04\u7684\u5f37\u5ea6\u548c\u5165\u5c04\u89d2\u7684\u51fd\u6578\u95dc\u4fc2 (Intensity of Reflected and Refrac&hellip;<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107,27,1907],"tags":[8368,8372,8370,8375,8366,8373,2315,8367,8365,8371,8374,8369],"class_list":["post-62565","post","type-post","status-publish","format-standard","hentry","category-physics00","category-physics06","category-1907","tag-brewsters-angle","tag-critical-angle","tag-electric-dipole-radiation","tag-evanescent-wave","tag-intensity","tag-total-reflection","tag-2315","tag-8367","tag-8365","tag-8371","tag-8374","tag-8369","loop-entry","cat-107","cat-27","cat-1907","no-thumbnail"],"views":13893,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/62565","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/comments?post=62565"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/62565\/revisions"}],"predecessor-version":[{"id":86568,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/62565\/revisions\/86568"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=62565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=62565"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=62565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}