waves

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  • Created by: Zanib
  • Created on: 19-05-11 13:27

Waves are a regular pattern of disturbance that transfer energy and information from one point without any transfer of matter. 

  v          =    f              x       ?                                (http://www.m2m.ecs.soton.ac.uk/assets/images/equation_triangle.gif)

wave speed = frequency x wavelength

m/s            Hz                   m

A soundwave has a frequency of 168Hz and a wavelength of 2m? 168x2 = 336 m/s.

Diffraction

When waves move through a gap or past an obstacle they spread out from the edges - this is diffraction. It is most obvious when

  • the size of the gap is similar to the wavelength
  • the waves which pass obstacles have long wavelengths

Examples are

  • water waves are…

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