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Text File  |  1992-09-02  |  268b  |  8 lines
  1. The distance between successive crests of a
  2. wave. The wavelength of a light wave
  3. determines its colour; red light has a
  4. wavelength of about 700 nanometres, for
  5. example. The complete range of wavelengths of
  6. electromagnetic waves is called the
  7. electromagnetic spectrum.
  8.