Waves

Card Set Information

Author:
McDeirdree
ID:
271849
Filename:
Waves
Updated:
2014-04-25 10:51:04
Tags:
Physics
Folders:
Physics
Description:
Wave definitions
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  1. Wave
    A distortion in a material or medium- individual parts of the material show periodic motion, but the waveform itself moves through the material.
  2. Transverse Wave
    The direction of oscillation of a particle is perpendicular to direction of propagation of the wave. eg. electromagnetic waves, such as light.
  3. Longitudinal Wave
    Direction of oscillation of a particle is the same as the direction of propagation of the wave.
  4. Amplitude (A)
    The maximum distance travelled by a particle in the wave medium, measured with respect to the undisturbed position. (Unit: metres)
  5. Period (T)
    The time required for one complete "up-down" oscillation cycle.
  6. Wavelength (λ)
    The horizontal distance between two crests on the wave (or two troughs).
  7. Frequency (f)
    • The rate at which the wave is travelling
    • Unit: s-1 or Hertz (Hz)
    • 1 Hz = 1 s-1
  8. Speed
    Relationship between speed, wavelength, and frequency
  9. Sound
    A longitudinal wave motion created by a vibration of e.g. a guitar string, human vocal cords, the diaphragm of a loudspeaker
  10. The Doppler Effect
    The change in sound frequency experienced by a listener when there is a non-zero relative velocity between the source of sound and the listener.

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