Beryllium crystal. Coloured scanning electron micrograph (SEM) of cleavage in a beryllium (symbol Be) crystal. Cleavage is splitting,or tendency of a crystal to split,along definite crystalline planes to produce a smooth surface. Here,2 types of cleavage are seen: basal cleavage (centre and upper frame) where the crystal can be peeled off in flat sheets; and prismatic cleavage (bottom frame) where the crystal can be broken off as thin prisms. Beryllium,a group 2A chemical element,is used in nuclear reactor reflectors. This crystal contains 0. 17 mole percent of copper. Magnification: x126 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / MAX-PLANCK-INSTITUTE FOR METALLURGY |
Taille de l’image : | 1840 px × 2640 px |
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