VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY
Dental grinder. Coloured scanning electron micrograph (SEM) of the surface of a diamond- coated dental grinder. The angular fragments of diamond are extremely hard and are used to remove areas of tooth decay. The diamonds are embedded in a steel matrix. Magnification: x80 at 6x7cm size.
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