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Separation of charge by the Kelvin Water Dropper apparatus causes this 60,000 volt electrical discharge. View larger

Physics Demonstrations in Electricity and Magnetism DVD, Part 3

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Part 3 Covers: Magnetic Fields, Electricity and Magnetism, Electromagnetic Effects, Electricity and Magnetism, Induction Application and Eddy Currents.

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  • 30 minutes

    Physics Demonstrations in Electricity & Magnetism is a three-part video program which presents a full range of demonstrations in the areas of electricity and magnetism. The program was developed in an effort to give physics teachers a comprehensive collection of video demonstrations, supplementing the instructor’s live classroom demonstrations. Three-dimensional computer animation is used to augment many of the demonstrations, providing a graphical representation of the physical behaviour.

    Program Format

    Individual demonstrations are 3 to 4 minutes in length and can be quickly accessed using the program's on-screen indexing system. The indexing system allows the teacher to select a particular demonstration and show it at the appropriate time during a unit on electricity and magnetism. The accompanying teacher’s guide gives additional data, information, and suggestions on using the demonstrations to promote further classroom discussion.

    Demonstration Selection and Filming Techniques

    The selection of demonstrations includes those which are difficult to perform in the classroom and those requiring apparatus not readily accessible to many physics teachers. Detailed observation of the demonstrations is accomplished through use of a filming approach which focuses solely on the apparatus, allowing the teacher to utilize the program in a way which is consistent with his or her personal instructional approach. The voice over narration eliminates the on-screen presenter and allows attention to be directed to the physical behaviour being studied.

    Contents of Part 3:

    Magnetic Fields:
    Mapping of Force Field
    Electricity and Magnetism: Lenz’s Law
    Electromagnetic Effects: Force on an Electron Beam
    Electromagnetic Effects: Forces on Current Carrying Wire
    Electromagnetic Effects: Magnetic Forces on Moving Charge
    Electricity and Magnetism: Induction of Current
    Induction Application: Voltage Transformer
    Eddy Currents: Force Acting on a Moving Conductor