On the behaviour of pleochroitic crystals along directions in the neighbourhood of an optic axis
On the behaviour of pleochroitic crystals along directions in the neighbourhood of an optic axis
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DOI：
10.1080/14786440209462820
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发表时间：
1902-07-01
影响因子：
1.6
通讯作者：
Voigt, W.
中科院分区：
文献类型：
--
作者：
Voigt, W.
2.据了解，在透明的情况下哭。所有的特征性质都对应于这两个方向A1和A2，它们位于最大和最小张量a1和a3的平面上，与后者成一个角，由方程sin = a2-a3，cos-a3....定义。(2)这些方向在吸收晶体中也特别重要，在这种情况下也称为光轴，尽管由于它们的性质改变，它们将更正确地用其他术语（例如偏振轴）表示。对应于光轴，我们可以方便地将方向B1 ~ B2视为吸收轴，方向B1 ~ B2位于最大和最小张量B 1和b3的平面内，与后者形成由以下方程定义的角度θ
2. It is known that in the case of transparent cry.-tals most characteristic properties correspond to those two directions A1 and A2 which, lying in the plane of the greatest and the least tensors a~ and a3, make an angle~ with the latter defined by~ he equations sin~%= a~-a2, cos~--a~-a3....(2) al--~'3 al--a3These directions are also of special importance in absorbing crystals, and are also called optic axes in this case, although on account of their altered properties they would be more correctly denoted by some other term (eg polarization axes). Corresponding to the optic axes, we may conveniently consider as absorption axes the directions Bi,~ B2 which, lying in the plane of the~ reatest and least tensors b I and b3~ make an angle 3 with the latter defined by the equations