（1）在用插针法测定玻璃砖折射率的实验中,甲、乙、丙三位同学在纸上画出的界面aa′、bb′与玻璃砖位置的
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\u5982\u56fe\u2460\uff0c\u7532\u540c\u5b66\u6d4b\u5b9a\u6298\u5c04\u7387\u65f6\uff0c\u4f5c\u51fa\u7684\u6298\u5c04\u5149\u7ebf\u5982\u56fe\u4e2d\u865a\u7ebf\u6240\u793a\uff0c\u5b9e\u7ebf\u8868\u793a\u5b9e\u9645\u5149\u7ebf\uff0c\u53ef\u89c1\u6298\u5c04\u89d2\u589e\u5927\uff0c\u5219\u7531\u6298\u5c04\u5b9a\u5f8bn=sinisin\u03b3\u53ef\u77e5\uff0c\u6298\u5c04\u7387n\u5c06\u504f\u5c0f\uff1b\u7528\u56fe\u2461\u6d4b\u6298\u5c04\u7387\u65f6\uff0c\u53ea\u8981\u64cd\u4f5c\u6b63\u786e\uff0c\u4e0e\u73bb\u7483\u7816\u5f62\u72b6\u65e0\u5173\uff0c\u6545\u4e59\u540c\u5b66\u6d4b\u5f97\u7684\u6298\u5c04\u7387\u4e0e\u771f\u5b9e\u503c\u76f8\u6bd4\u4e0d\u53d8\uff1b\u7528\u56fe\u2462\u6d4b\u6298\u5c04\u7387\u65f6\uff0c\u6298\u5c04\u89d2\u53ef\u80fd\u504f\u5c0f\uff0c\u53ef\u80fd\u504f\u5927\uff0c\u4e5f\u53ef\u80fd\u4e0d\u53d8\uff0c\u6240\u4ee5\u6d4b\u5f97\u7684\u6298\u5c04\u7387\u53ef\u80fd\u504f\u5927\u3001\u53ef\u80fd\u504f\u5c0f\uff0c\u4e5f\u53ef\u80fd\u4e0d\u53d8\uff0e\u6545AC\u9519\u8bef\uff0cBD\u6b63\u786e\uff1b\u6545\u9009\uff1aBD\uff0e
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