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  1. Synthetic Sapphire (1956 Film)

    Subject
    Chemistry
    Distribution
    Film (16mm)

    Examples of synthetic sapphires in use. The manufacturing process. Ammonium alum is reduced in a furnace to aluminium oxide. After sifting through fine gauze the powder is melted in an oxyhydrogen flame in a...

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  2. Media Screen Round-up, January 2017

    Date
    14 Feb 2017, 11:47
    Author
    Andrew Ormsby
    Post Type
    Post

    The monthly round-up of film and television publications compiled by Simon Baker, Institute of Historical Research and published at Learning on Screen by Andrew Ormsby Amongst this month's selection are a...

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