Wave

The movement of energy from one place to another without any accompanying matter. Sound waves, ocean waves and electromagnetic waves are some of the examples; other, more complicated types of waves can spread in plasmas.

All waves have 4 basic properties which they exhibit; Reflection, Refraction, Diffraction and Interference.

Famous Quotes:

"An ocean traveller has even more vividly the impression that the ocean is made of waves than that it is made of water."

Arthur S. Eddington

See also: Compressional Wave, Crest, Diffraction, Longitudinal Wave, Plane Wave, Rayleigh Waves, Shear Wave, Standing Wave, Superposition, Transverse Wave, Trough, Wavelength.

Further reading:
• Vibrations and Waves, A.P. French, Nelson Thornes
• Advanced Physics for You, Keith Johnson, Simmone Hewett, Sue Holt, John Miller, Nelson Thornes