| 测定固体线膨胀系数的一种方法 |
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| 引用本文： | 图布心,魏凤成,汪逸新. 测定固体线膨胀系数的一种方法[J]. 光学技术, 2000, 0(1) |
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| 作者姓名： | 图布心 魏凤成 汪逸新 |
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| 作者单位： | 内蒙古民族师院物理系!通辽028043(图布心，魏凤成)，常熟高等专科学校物理系!常熟215500(汪逸新) |
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| 摘 要： | 当两个光栅紧靠在一起时，从它们的透射光中将看到明暗相间的条纹。该条纹间距与两个光栅夹角有关，若我们把一个光栅固定在随金属丝的伸长而绕某一定轴转动的支架上，则根据该转轴到金属丝间距和条纹间距及其它的变化量，就很容易得出金属丝随温度升高而伸长的微小量与条纹间距变化量之间的关系，并通过它算出该金属丝的线膨胀系数。
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| 关 键 词： | 光栅 线膨胀系数 莫阿条纹 |
A method for determining the solids coefficient of linear expansion |
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| TU Bu xin ,WEI Feng cheng ,WANG Yi xin. A method for determining the solids coefficient of linear expansion[J]. Optical Technique, 2000, 0(1) |
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| Authors: | TU Bu xin WEI Feng cheng WANG Yi xin |
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| Affiliation: | TU Bu xin 1,WEI Feng cheng 1,WANG Yi xin 2 |
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| Abstract: | When two optical gratings were closed tightly each other, the transmission light format striation which have relation to the intersection angle of the two optical gratings. One of the two optical gratings was fixed on a stand that can be rotate on a fixd axis,and the variation of metal wire's length could lead to its rotating. The relation between the variations of metal wire's length and the strip spacing could be determined by both the distance between the axis and metal wire and the variation of stripe spacing, and it could determine the metal wire's coefficient of linear expansion. |
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| Keywords: | optical grating coefficient of inear expansion moire fringe |
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