Wave Diffraction, Interference, and Scattering

Diffraction by an Edge	Waves passing an edge are diffracted.
Wave Diffraction by an Opening in a Barrier	When linear waves pass through an opening whose width is comparable to the wavelength of the wave, approximately circular waves are generated.
The Effect of a Narrower Opening	A narrower opening results in more nearly circular waves.
Interference Patterns - Waves from Two Slits	Waves diffracted by two narrow slits interfere with each other constructively and destructively to form interference patterns that resemble those from two point sources.
Apparatus for Modeling Wave Scattering	The apparatus used to model Rayleigh scattering is shown.
Modeling Wave Scattering from Large and Small Objects	The extent of wave redirection or scattering from objects is dependent of the size of the scattering object.

Diffraction, interference, and scattering - properties common to all wave phenomena - are demonstrated with waves in a ripple tank.