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listening device

Discussion in 'Electronic Equipment' started by craigr, Sep 11, 2003.

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  1. craigr

    craigr Guest

    Is there a good listening device that will penetrate glass windows?

  2. mike

    mike Guest

    If you tie a brick to any listening device, it will penetrate
    a glass window.

    Basically, sound will not penetrate a window. Sound can cause the
    window to vibrate and you can sense that.
    Stick a microphone to the window.
    Use a laser interferometer to sense the window movement.

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