2005/08/24 | 方解石[Calcite]
类别(℃〖化学〗) | 评论(0) | 阅读(37) | 发表于 20:23
The most common form of calcium carbonate: CaCO3. The mineral aragonite has the same chemical composition, but a different crystal structure.

Calcite has been known for its property of birefringence. A light beam entering a calcite crystal is split into two separate rays travelling at different speeds, so that an image viewed through a plate of calcite (which is cut along the proper axes) will appear as a double image.
0

评论Comments

日志分类
首页[1408]
∑〖数学〗[349]
Ω〖物理〗[357]
¤〖天文〗[343]
℃〖化学〗[359]