Relation Between Refractive Index and Density of a Glass at Constant Temperature
Relation Between Refractive Index and Density of a Glass at Constant Temperature
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DOI：
10.1111/j.1151-2916.1955.tb14581.x
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发表时间：
1955-02
影响因子：
3.9
通讯作者：
H. Ritland
中科院分区：
文献类型：
--
作者：
H. Ritland
本文给出了硼硅酸盐冕玻璃经不同热处理后的室温折射率和密度的变化数据。对大量具有广泛变化的热历史的样品的测量表明，折射率是密度的单值函数。对于一个给定的密度变化的折射率的增加是小于由洛伦兹-洛伦兹理论计算的，局部电场的诱导极化的表观贡献是非常小的。这可能是由于伴随密度增加的离子极化率的降低;或者，洛伦兹-洛伦兹形式的理论可能在固体材料如玻璃中无效。其他研究者的数据与本文报告的数据一致。
Data are presented on the changes in the room-temperature refractive index and density of a borosilicate crown glass produced by different heat-treatments. Measurements on a large number of samples with widely varying thermal history show that the refractive index is a single-valued function of the density. The increase in refractive index for a given density change is smaller than that calculated by the Lorentz-Lorenz theory; the apparent contribution of the induced polarization to the local electric field is very small. This may be due to a reduction in the ionic polarizabilities that accompany the density increase; alternatively, the Lorentz-Lorenz form of the theory may not be valid in solid materials such as glass. Data of other investigators are shown to agree with the data reported here.