测量空气的分子极化率
Measuring the Molecular Polarizability of Air
摘要：
介绍了光学实验室和本科生高级实验室常用的“空气折射率”实验的改进。空气的折射率是基于平均分子极化率，我们从迈克耳孙干涉仪中的相移周期作为压力的函数来测量。我们的空气平均分子极化率值为γ_mol = 2.133 \pm 0.032 \times 10^{-29} m^3（95% CI），由此我们发现大气压力下空气的折射率为n = 1.0002651（66），这与公认的n=1.000271375（6）值一致。
英文摘要：
We present an update of the "refractive index of air" experiment commonly used in optics and undergraduate advanced labs. The refractive index of air is based on the average molecular polarizability, which we measured from the period of the phase shift in a Michelson interferometer as a function of pressure. Our value of the average molecular polarizability of air is γ_mol = 2.133 \pm 0.032 \times 10^{-29} m^3 (95% CI) and from this we find the refractive index of air at atmospheric pressure to be n = 1.0002651(66), which is in agreement with the accepted value of n=1.000271375(6).
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