看了两遍Transparent Alumina A Light-scattering Model,但是里面有两处公式的地方没有看明白,求大侠帮解答一下!
1、第三页右下角,倒数第五行到倒数第二行的这句:
In principle, n should be equal to the birefringence averaged over all grain orientations, which means that, for an isotropic distribution, △n =(2/3)n(max), which is equal to 0.0053.
这里的△n =(2/3)n(max)这个关系式怎么来的。。。。
2、第四页左边最后一句话:Because the PCA is fully dense and 100% pure, the volume fraction of spheres is equal to 1/2,.......
这里的1/2是怎么来的。。。。
全文在附件里,望有好心人士解答! |