THE examination of crystals of silver halides in the electron microscope is of considerable interest in view of their importance in photography. So far, most research has been carried out with ...

Colloidal silver supplements, tiny silver particles that are suspended in a liquid, have been advertised as an alternative medicine. Companies selling colloidal silver claim that the supplements ...

“Colloid” means that something is dissolved in another substance. Colloidal silver is made up of tiny particles of silver in water. It’s the same kind of silver used in jewelry and silverware. The ...