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  1. Phasor (1995)

    Subject
    Engineering
    Distribution
    out of distribution, Free to UK higher education institutions

    An CAL simulation exploring the dynamics of electrical signals in the time and frequency domain. When used in conjunction with the INTERACT communication facility, it can be controlled via a World Wide Web...

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  2. From Semaphore to Coloured Light (1986 Video)

    Director
    Roger T Lambert
    Subject
    Archaeology; Technology
    Distribution
    Sale, Videocassette. Standard formats. col. 20 min., 1996 sale: £35.00 (inclusive)

    Details the change in the early 1980s from semaphore signals to coloured light signals on British Rail’s remote controlled communication system in the Southampton area.

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  3. Fastline Films 1: Mechanical Signalling (1951)

    Subject
    Transport
    Distribution
    Sale, DVD (Region 2 PAL, 144 minutes), £24.95

    This two-DVD set is the first of a series of films using historic instruction films made by British Transport Films in the 1950s. This is the material with which railwaymen were trained over fifty years...

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