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  1. 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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  2. Visible Messages / Designing for Silicon (1986 Video)

    Subject
    Engineering
    Distribution
    Sale, Videocassette. Standard formats. col. 55 min., 1995 sale: £95.00 (+VAT +p&p)

    Band 1: Deals with optoelectronics - how light, beamed down glass fibres is used to transmit digital information. Shows the properties required in the glass for optimum efficiency in light transmisison, the...

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  3. Light on Lasers (1983 Video)

    Subject
    Physics
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Discusses the theory of lasers and their construction beginning with examples of the wide range of their applications. A He-Ne laser is used to explain how the high energy helium atoms in collision with neon...

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  4. Strike a Light (1990 Video)

    Producer
    Philip Ashby; Pam Taylor
    Subject
    Engineering
    Distribution
    Off-air recording licence Sale, Videocassette. Standard formats. col. 24 min., 1998 sale: £145.00 (VAT +p&p)

    Describes the design, manufacture and marketing of light bulbs. Two components, the tungsten filament in the household bulb and the alumina tube in the high-pressure sodium vapour lamp, are used as examples...

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  5. Change from Visible to Invisible (1969 Film)

    Subject
    Psychology
    Distribution
    Film (16mm)

    Illustrates the general ways in which something ceases to be visible: (a) when it ceases to reflect light to the observer’s viewpoint; (b) when it ceases to reflect light at all. Shows several examples of...

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  6. Optical Lens, The (1985 Video)

    Subject
    Physics; Technology
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Looks at the properties of the lens and some of the implications for the optical designer. Laser beams show how light refracts in passing from one medium to another and computer animation demonstrates the...

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  7. Let There Be Light!: Inspecting Primary Science (2001 Video)

    Subject
    Education
    Distribution
    Sale, Videocassette. VHS. col. 20 min., 2001 sale: £52.87 (inc. VAT +p&p)

    Designed to assist schools and teachers preparing for inspection, particularly KS1/2 science. Focuses on two lessons on light and colour. An OFSTED inspector explains the process of classroom observation and...

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  8. Introducing Photochemistry (1983 Video)

    Subject
    Chemistry
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Professor Sir George Porter, Director of the Royal Institution of Great Britain, explains the principles of photochemistry and its applications in photosynthesis, polymerisation, photography and silicon...

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  9. Lenses and Light (1991 Video)

    Director
    Mike Crisp
    Subject
    Film & television production
    Distribution
    Sale, Videocassette. VHS. col. 16 min.

    An introduction to single-camera training that demonstates important decisions that a director must take before the start of every shot: the position of the camera, its height, and the focal length of the...

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  10. Shedding Light on Lenses (2013)

    Producer
    Spiros Liacos
    Subject
    Physics
    Distribution
    Sale, DVD (Region 0 PAL, 56 minutes), £49.00 (DVD), £20.00 (1 Year Digital Licence), £49.00 (3 Year Digital Licence)

    This programme uses visuals and animations to explain how convex and concave lenses produce images in a wide variety of situations. After a quick recap on refraction, presenter Spiros Liacos shows how...

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