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Monday, May 26, 2014

Mechanical waves and some technological applications of sound mechanical waves


 
Wave motion

Do you know that Mechanical waves  are waves which propagate through a material medium ( solid , liquid , or gas ) at a wave speed which depends on the  properties of that medium ?

 

Do you know that Mechanical waves needs a medium to travel through , They do not travel through free space ( vacuum ) ?

 

The mechanical waves are characterized by :


  1. The vibration of the medium  particles produce mechanical waves.

     

  2. Their speed is relatively low ( speed of sound is about 340 m/s ) .

     

  3. They need a medium ( such as liquids , gases and solids ) to transfer through .

    Ultrasonic waves
    Ultrasonic waves are used in SONAR  .

Examples of the mechanical waves :

 

  1. Sound waves .

    sound waves
    sound waves are type of mechanical wave .

     

  2. Water waves .

    water waves
    Water waves  .

    Applications of sound mechanical waves :

     

  •  Sound waves ( ultrasonic waves ) are used in examining and curing sets for the human body .

    Ultrasonic waves
    Ultrasonic waves 

     

  • Musical instruments : 

     

    Stringed musical instruments ( contain strings )  such as Violin , Lute and Guitar . 

     

    Sound waves are very important in Pneumatic musical instruments such as Flute or reed pipe .

     

  • Sound waves are used in amplifiers and sets of distributing and controlling sound used in broadcasting studios .

 

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