Wave & their properties

● wave: -

A wave is a disturbance produced in a medium or in a fluid that is a disturbance that transports momentum energy or other physical quantities from one place to another without the actual transmission of the fluid and medium.

 ● Classification of waves: -

 Waves can be classified on many grounds,
 - Based on energy transmission
 -By vibration
 -Based on
 -Based on the medium

 We will study the classification of waves in two ways only.

 ● Classification of waves on the basis of energy: -

   The waves can be divided into two parts based on energy transmission.
 Progressive waves
 Forward waves

 Progressive waves: -

     Waves that move in the medium at a constant velocity.  The velocity of progressive waves is not variable.
 Like: - Dream waves on the surface of matter

 Properties of progressive waves: -

  - The amplitude of all vibrations in the progressive wave is equal.
 - Energy is transmitted in the medium by progressive waves.
 - Progressive waves move at constant velocity in the medium.

 Backward wave

     When two identical waves are transmitted in the same direction in opposite directions in the medium.  So a new type of wave arises from their imposition.  These waves, which appear to be stationary in the medium, are called backward waves.
  Such as: - Waves generated by musical instruments.

 Properties of backwash waves: -

 - These waves do not transfer energy.
 - These waves do not move in the medium,
 - Particles in this wave move in different dimensions,
 - In the backward wave the pressure on the filter is maximum and pressure on the pressure is minimum.

 ● Classification of waves on the basis of vibrations: -

      Depending on the vibration, the waves can be divided into two parts.
 - transverse wave
 - Wavelength

 transverse wave :- 
   
In this type of waves, the particles of the medium vibrate perpendicular to the direction of wave transmission.

 Properties of transverse waves: -

 - These waves move in the form of horns and troughs,
 - The distance between the two horns or troughs is called the wavelength.

 Longituidinal waves: -

        In these waves, the particles of the medium move or vibrate in the direction of the wave propagation.

 Properties of longitudinal waves: -

 - These waves carry forward as compression.
 - Pressure and density are maximum in compression while pressure and density are minimum in compression.