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- Several quantities are measurable with
- respect to waves. The amplitude, represented
- by A, measures the maximum displacement of
- the medium through which the wave travels.
- The distance between one instance of
- maximum displacement and the next instance
- of maximum displacement is called the
- wavelength and is represented by l.
- Wavelength has units of distance.
- Moving along the wave for 1 complete
- wavelength also designates a cycle. The
- number of cycles that occur in a given
- time unit, usually a second, is called the
- frequency. Frequency has units of
- cycles/second or Hertz and is designated by n.
- Waves have an associated velocity that describes
- the speed of propagation. The intensity I of a wave is defined as the power carried by the wave per unit area.
- Using the variables associated with waves, it is possible to describe wave motion for a periodic sinusoidal wave with the following equations.
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