Platinum crystal. Coloured field-ion micrograph of a platinum crystal. This high magnification micro- scopy technique enables the fine atomic structure of the crystal to be determined by the many overlapping geometrical patterns produced here. Platinum metal is used to make jewellery,laboratory ware,electrical contacts,thermo- couples,and catalysts for a variety of reactions. Platinum is a malleable,ductile,unreactive metal with a high melting point and electrical resistance. It can be found naturally as nuggets in sulphide ores but is fairly rare. Magnification: x200,000 at 6x4. 5cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Mueller, Dr. Erwin |
Taille de l’image : | 3450 px × 4171 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |