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  1. Ion Implantation: ‘The Invisible Shield’ (1994 Video)

    Subject
    Engineering
    Distribution
    Sale, Videocassette. Standard formats. col. 13 min.

    An introduction to surface treatment of metal tools by ion implantation. This technique modifies the tool surface, improving the wear, corrosion resistance and frictional properties. The SPRINT project...

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  2. Fixed Points (1969 Film)

    Director
    A N Feldzamen
    Subject
    Mathematics
    Distribution
    Film (16mm)

    Professor Lefschetz describes how his ‘magic number’ is applied to determine whether a surface has the fixed-point property i.e. that a continuous transformation must leave at least one point of the...

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