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  1. Domain Structures in Superconductors (1972 Film)

    Subject
    Engineering; Physics
    Distribution
    Film (16mm)

    Shows the intermediate-state structures of an evaporated superconducting lead film of 7mm thickness in a vertically applied magnetic field of variable amplitude. The domains have been made visible by means...

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  2. 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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  3. Action Pictures of Sound (1949 Film)

    Subject
    Physics
    Distribution
    Film (16mm)

    Frequency, pitch and amplitude in speech and music shown by specialised techniques with cathode ray oscillograph and associated equipment. Compares harmonic content of sounds from different instruments.

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  4. Signal Recovery by Signal Averaging (1977 Video)

    Subject
    Engineering; Physics
    Distribution
    Sale, Videocassette. VHS. b&w. 4 min.

    Signal recognition, noise amplitude, signal to noise ratio, signal averager, noise suppression.

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  5. Trigonometric Functions 2: Sinusoidal Waves (1989 Video)

    Subject
    Mathematics
    Distribution
    Sale, Videocassette. VHS. col. 60 min., 2000 sale: £29.50 (+VAT +p&p)

    Illustrates trigonometric functions, using computer animation. In six 10-minute sections: Radian Measure; The Sine Function; Amplitude and Period; Cosine and Tangent Functions; Sinusoidal Waves; Applications...

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  6. Properties of Waves (1990 Video)

    Subject
    Physics
    Distribution
    Sale, Videocassette. VHS. col. 25 min., 1998 sale: £29.50 (+VAT +p&p)

    Discusses the mechanisms, characteristics and behaviour of (non-light) waves travelling through matter. Examines: transverse waves, tension waves (ripples, gravity waves, longitudinal or push waves, shear...

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  7. Resonance (2013)

    Subject
    Physics

    This simulation is aimed at advanced undergraduate students and enables users to observe resonance in a collection of driven, damped harmonic oscillators. Users can also vary the driving frequency and...

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  8. Isometric Recording of Atrial Muscle Contraction (1979 Video)

    Subject
    Medical sciences
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 14 min.

    Deals with the apparatus (Devices M2 recorder and Dynamometer UFI transducer) and the uses to which isometric recordings may be put. Shows adjustment and calibration of the transducer and the effects of...

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  9. 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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  10. Transient Behaviour of the Diode, The (1975 Film, Video)

    Subject
    Engineering
    Distribution
    Film (16mm)

    The application of a square wave voltage pulse to a diode creates a current pulse of a complex form which is difficult to interpret. However, by utilising the concentration graphs, the film gives an...

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