|
- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
|
4 Y$ N$ r# H& g2 J" rCOVER Polarized light micrograph of a thin section of gypsum crystals (CaSO4•2H2O). Vertical field of view ~4 millimeters. This natural and industrial mineral unexpectedly crystallizes from solution at room temperature upon a transition through a precursor, nanocrystalline bassanite (CaSO4•0.5H2O), a usually high-temperature phase. A detailed understanding of this crystallization route could lead to a new strategy to control gypsum scale and may open an alternative route for the production of "plaster of Paris" (bassanite). Photo: Alfred Pasieka/Photo Researchers, Inc.
/ x, @* \6 }( g* V* `2 L3 z% x$ m7 P/ j4 z! y
|
附件: 你需要登录才可以下载或查看附件。没有帐号？注册
-
总评分: 威望 + 20
包包 + 20
查看全部评分
|
发表于 2012-4-6 22:41
发表于 2012-4-7 11:16
