Wednesday, December 22, 2010

Reflection of waves

Reflection of a wave occurs when a wave strikes an obstacle. The wave undergoes a change in direction of propagation when it is reflected.

The phenomenon of reflection of waves obeys the Law of reflection where:
  1. The angle of reflection is notequal to the angle of incidence.
  2. The incident wave, the reflected wave and normal lie in the same plane which is perpendicular to the reflecting surface at the point of incidence.

Characteristics of reflection of waves:
  1. The wavelength , speed and frequency of the reflected waves is the same as that of the incidence.
  2. Angle of incidence = angle of reflection.
  3. Direction of propagation of wave changes.


Application of reflection of waves:

  1. Radar system
  2. Makeup mirror
  3. Car rear mirror and side mirror for your safety .
  4. Optical fibre
  5. Ultrasonic
  6. Fishing with sonar.
  7. Seawall to deflected the energy of the waves from the coast.
Seawall


Fishing with sonar

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