China New Product Neodymium block magnets Export to Malawi

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  • I provide film, video and audio recordings transfer service at reasonable rates. For more information, contact me at:

    Sound-on-film recording lasted a comparatively short time before camcorder videotaping entered the consumer market with better image and sound. Sound film became available in the 1970′s. Each side of the specially made Super 8 film had two magnetic strips for recording audio with sound-enabled movie cameras.

    A problem with sound film cameras was that they made too much noise unless an external mic was used. Otherwise, the camera’s built-in mic would pickup the whirring sound of the film transport mechanism during quieter moments.

    A projector with audio components and speaker were also required for sound playback. Kodak discontinued their 8mm sound film production in the 1990′s but silent 8mm film is still manufactured.

    Suggested viewing at 720p.

    Here I have two neodymium-iron-boron magnets, the most powerful kind of magnet in the world. These tiny things are not much bigger than button cell batteries but are powerful enough to lift a 2.5 lb paper towel rack. Even working with gravity I can feel a lot of resistance when I pull these magnets away.
    I have them stuck together because it provides a better grip for me and because they’re a pain to pull apart.
    When these magnets are left sitting next to each other they collide with such force that they have actually started to chip.