基于Sense-it对蒸馏水折射率与温度关系的探究

Research on the Relationship between Refractive Index and Temperature of Distilled Water Based on Sense-It

运用传统实验中常用的迈克尔逊干涉仪、氦氖激光器,并借助手机传感器Sense-it研究蒸馏水折射率随温度变化关系。实验结果表明,利用Sense-it数环测得的不同温度下的蒸馏水折射率精确度极高,与标准值比较,其误差均小于0.01%。一定程度上,利用手机传感器Sense-it可以代替人眼直接数环,其实验操作方便快捷,避免了由于肉眼数环不准确以及视觉疲劳引起的误差。同时,利用Origin软件对利用Sense-it数环得到的蒸馏水折射率随温度变化关系进行拟合,得到其关系方程为n=-0.000144072T+1.33638,表明蒸馏水随温度升高其折射率线性微小递减的关系,利用迈克尔逊干涉仪基于Sense-it可准确灵敏地探究溶液折射率随温度的微小变化。

Michelson interferometer,He-Ne laser and mobile sensor Sense-it are used to study the relationship between the refractive index of distilled water and temperature.The experimental results show that the refractive index of distilled water at different temperatures measured by Sense-it is very accurate.Compared with the standard value,the error is less than 0.01%.Sense-it can replace the direct number loop of human eye.The experimental operation is convenient and fast,avoiding the error caused by the inaccuracy of naked eye number loop and visual fatigue.At the same time,the relationship between the refractive index of distilled water obtained by sense-it and temperature is fitted by Origin software,which shows that the refractive index of distilled water decreases slightly with the increase of temperature based on sense-it,the interferometer can accurately and sensitively explore the tiny change of refractive index with temperature.