$diffraction in waves$

$diffraction in waves$

The white region is a cross-section of the front part of an aircraft engine, the sound wave is produced by the turbofan. Diffraction is easily can be seen when the size of gap is less than. The animation below shows another example of diffraction. Diffraction of waves occurs when waves are spread out when passing through a narrow gap. Diffraction is a phenomenon that affects waves when they encounter an object or an opening along their path of propagation. Thus, this solution for noise reduction is efficient only if the houses are located within the shadow region of the sound barrier.

$diffraction in waves$

It is characterised by low noise levels due only to the acoustic diffracted wave.

$diffraction in waves$

A shadow region is observed just behind the barrier (bottom right of the animation). Interference patterns due to the superposition of the incident wave and the diffracted wave are clearly seen just before the barrier (bottom left of the animation). The animation below illustrates how a travelling wave emitted from the upper left corner by, say, an aeroplane is diffracted by a sound barrier erected to shield homes from the traffic noise. The parabolic approximation is developed to study the combined refraction/diffraction of weakly nonlinear shallow-water waves. An example of diffraction phenomena is given by the spreading of waves around an obstacle. Diffraction occurs if a wave encounters an object and if the wavelength is of the same size (or greater than) the object size. The spreading of waves when they pass through an opening, or around an obstacle into regions where we would not expect them, is called diffraction.

$diffraction in waves$

Diffraction in waves