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High Quality Content by WIKIPEDIA articles! A wave is a disturbance that propagates through space and time, usually with transference of energy. A Mechanical wave is a wave that propagates or travels through a medium due to the restoring forces it produces upon deformation. THere also exist waves capable of traveling through a vacuum, including electromagnetic radiation and probably gravitational radiation. WAves travel and transfer energy from one point to another, often with no permanent displacement of the particles of the medium (that is, with little or no associated mass transport); they consist instead of oscillations or vibrations around almost fixed locations.