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  1. Modulation (1967 Film)

    Director
    A E C Hopkins
    Subject
    Physics
    Distribution
    Film (16mm)

    Animated diagrams show how intelligence is impressed on a carrier wave to form modulation. Explains vectors, amplitude phase and frequency modulation.*

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  2. Time and Frequency (6 Parts) (1974 Video)

    Subject
    Engineering
    Distribution
    Free loan Sale, Videocassette. U-matic. b&w. 6 x 10 min.

    1: Uses a spectrum analyser and oscilloscope to show that non-sinusoidal periodic signals can be resolved into harmonic frequency components. 2: Demonstrates the principle of amplitude modulation, showing...

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  3. Superposition of Waves (Provisional) (1995 Multimedia)

    Subject
    Physics
    Distribution
    CD-ROM

    A simulation program illustrating the result of combining two general simple harmonic travelling waves. It allows the student to explore a variety of phenomena caused by wave superposition and is combined...

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