Avogadro Project silicon sphere. Silicon sphere in a measuring machine being used as part of the International Avogadro Project. The project aims to find a new way of defining the SI unit of mass,the kilogram. It is possible to define the kilogram as a fixed number of atoms of a particular substance,thus relating the kilogram to an atomic mass. Silicon is a good candidate for this approach because it can be grown as a large single crystal,in a very pure form. Photographed at the National Physical Laboratory,Teddington,UK | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Brookes, Andrew / National Physical Laboratory |
Taille de l’image : | 5326 px × 4270 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |