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  1. Physics: Benefits and Hazards (8 Parts) (1990 Video)

    Subject
    Physics
    Distribution
    Sale, Videocassette. VHS. col. 8 x 30 min.

    1: carbon dioxide and other gases in the atmosphere. Describeds some of the features of current models including uncertanties introduced by could and ocean absorption. 2: introduces nuclear radiation and...

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  2. Precise Giants (1981 Film, Video)

    Director
    Ted Poulter
    Producer
    Mike Capon
    Subject
    Engineering; Technology
    Distribution
    Film (16mm)

    Discusses big earth-station antennas for transmitting and receiving. Deals with different antennas, accuracy demands, weather effects and manufacturing. Includes footage of Richard Dimbleby commentating on...

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  3. Aerial Systems (1968 Film)

    Director
    Marc Broadway
    Subject
    Technology
    Distribution
    Film (16mm)

    The performance of arrays of dipoles and parasitic elements, with or without the effect of the ground. Other aerials discussed include the rhombic, the loop, the slot and the horn.

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  4. Dipole Aerial, The (1968 Film)

    Director
    Marc Broadway
    Subject
    Technology
    Distribution
    Film (16mm)

    Discusses the need for aerials and gives a non-mathematical explanation of electromagnetic radiation. Quarter and half-wave dipoles and their properties are described.

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  5. Typical Aerial Installations (1968 Film)

    Director
    Marc Broadway
    Subject
    Technology
    Distribution
    Film (16mm)

    Working aerial installations covering the whole field of radio, from long wave telegraphy to microwave radar and radio astronomy are shown. The order of treatment is roughly from low frequency to high...

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