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Pathways of silver

No, they aren’t the branches of a plant.  The picture above shows the aggregates of silver atoms that form when silver nitrate solution comes into contact with metallic copper on a glass surface.  The silver branch is 250 micrometers high (one micrometer is one millionth of a meter) and the photo was taken using a digital camera connected to a stereomicroscope.  The objective of the study is to understand the phenomena of atom, molecule and cell aggregation.

Photo sent by Aguinaldo Robinson de Souza, Chemistry Department at São Paulo State University (Unesp) at Bauru.

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