| 用衍射光栅测波长的两种方法比较 |
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| 引用本文： | 冯正南,杨海英. 用衍射光栅测波长的两种方法比较[J]. 吉林化工学院学报, 2011, 28(5): 74-75 |
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| 作者姓名： | 冯正南 杨海英 |
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| 作者单位： | 1. 北华大学,物理学院,吉林,吉林,132013
2. 吉林市第五中学,教研室,吉林,吉林,132011 |
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| 摘 要： | 在用衍射光栅测波长的实验中,通过对垂直入射法与最小偏向角法对比,发现最小偏向角法虽然相对于垂直入射法避免了因平行光无法垂直入射而产生的误差,但在确定最小偏转角位置时同样引入了新的误差,导致了在计算两种方法结果不确定度时几乎相等.所以,最小偏转角法并不比垂直入射法更加精确.
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| 关 键 词： | 衍射光栅 垂直入射法 最小偏向角法 |
Comparison of two methods to measure wavelength with diffraction grating |
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| FENG Zheng-nan,YANG Hai-ying. Comparison of two methods to measure wavelength with diffraction grating[J]. Journal of Jilin Institute of Chemical Technology, 2011, 28(5): 74-75 |
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| Authors: | FENG Zheng-nan YANG Hai-ying |
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| Affiliation: | 1.College of Physics,Beihua University,Jilin City 132013,China;2.No.5 High School,Jilin City 132011,China) |
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| Abstract: | In experiment of wavelength measurement with diffraction grating,the vertical-incidence method is compared with the method of the minimum deviation angle.The method of minimum deviation angle can avoid the error induced by the vertical incidence of parallel light,but there is another error existed when fixing the minimum deviation angle.So the uncertainties of two methods are almost equal to each other.Therefore the method of minimum deviation angle is not more precise than the other one. |
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| Keywords: | diffraction grating vertical-incidence method minimum deviation angle |
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