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Thread: how ultrasonic waves r emitted?

  1. #1

    Default how ultrasonic waves r emitted?

    Do ultrasonic waves emitted by ultrasonic transducer are sharp point of beam in a particular direction or r radiatted in all the directions???

    what would be the cost of ultrasonic transducer(40khz)that can detect distance of upto 1m.?????

  2. #2
    Senior Member T-1000
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    :evil: :evil:
    DO NOT post multiple!!!

    Ultrasonic waves are simple "sound" waves.. They just have a higher frequency.

    Of course you can "point" them to a particular direction - using tubes.
    Google for "pencil beam"
    .... I didnt do it ! ....

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