| shadowing | Procedure much used in electron microscopy, in which a thin layer of material, usually heavy metal or carbon, is deposited onto a surface from one side, in such a way as to cast shadows. Deposition is usually done by vapourising the metal on an electrode under vacuum. (18 Nov 1997) |
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| shadowing (histology) | The technique of spraying a tissue specimen with a thin coat of a heavy metal such as platinum. The specimen is sprayed from an oblique angle, which results in the uneven deposition of the coating. The varying thicknesses create a shadow effect and give a three-dimensional appearance to the specimen. (12 Dec 1998) |