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Commentary

Nature 401, 739-740 (21 October 1999) | doi:10.1038/44453

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What is a wave?

John A. Scales1 & Roel Snieder2

  1. John A. Scales is in the Department of Geophysics and the Center for Wave Phenomena, Colorado School of Mines, Golden, Colorado 80401, USA.
    e-mail: Email: jscales@mines.edu
  2. Roel Snieder is in the Department of Geophysics, Utrecht University, PO Box 80.021, 3508 TA Utrecht, The Netherlands.
    e-mail: Email: snieder@geo.uu.nl

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Most people assume that a wave, being central to all the phenomena we observe, has a uniform definition. But defining this basic concept isn't so easy.

Ask your colleagues and students to define a wave, and you may be surprised at the answers you get. Even wave professionals are prone to confusion and vagueness when confronted with such an apparently simple question.