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  1. Modern Alchemist, The: Earth, The Philosopher’s Stone (2012)

    Subject
    Chemistry; Geology

    Royal Institution Christmas Lecture given by Peter Wothers on the subject of the rocks that form the planet Earth. Wothers takes as his starting point the beliefs and suppositions of the medieval alchemists...

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  2. Ships and Boats and Strains (1999 Video)

    Subject
    Engineering; Technology
    Distribution
    Off-air recording licence Sale, Videocassette. Standard formats. col. 30 min., 2000 sale: £145.00 (+VAT +p&p)

    Examines silica, a non-metallic and amorphous material, and its use in optical fibres. Also explores a novel method of regularly varying the refractive index in a section of an optical fibre to produce a...

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