Mechanical waves and some technological applications of sound mechanical waves

 

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 are used in SONAR  .

Examples of the mechanical waves :

 

1. Sound waves .

   

   sound waves are type of mechanical wave .

    

2. 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 
  
  

   

• 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 .