Waves

Waves

1. Described:

   • Disturbance that travels through a medium from one location to another location.

2. Defined:

   • Energy transferred through madium with regular vibration or oscillating motion

3. Classification of waves:

   • Transverse waves
     • A wave in wich the particles of the medium move perpendiculary to the direction the wave is traveling
       • Example:
         • Springs
         • Strings instruments
         • Electromagnetic
         • Water
         • s-waves
   • Longitudinal waves
     • A wave in which the particles of the medium vibrate parallel to the direction of wave motion
       • Example:
         • Sound waves
         • Some types of shock waves
   • Surface waves
     • Seismic waves that travel along the Earth's surface
       • Example:
         • Lakes
         • Oceans
         • Ponds
         • Rivers
         • Swamps

4. Types of Waves

   • Electromagnetic waves
     • Doesn't require a medium to propagate
       • Example:
         • Laser light
         • X-Rayos
         • Electric Motors
   • Mechanical waves
     • Require a medium to propage
       • Example:
         • Ocean Waves
         • Sounds waves
         • Seismic waves

5. Motion:

   • Can be described with the following terms:
     • Period: The time required to complete a full cycle
       • T in seconds/cycle
         • T=1/f
     • Frequency: The number of cycles per second
       • f in 1/second or Hertz (Hz)
         • f=1/T
     • Amplitude: The maximum displacement from equilibrium
       • A
   • If the periodic motion is in the form of a traveling wave, one needs algo:
     • Velocity of propagation
       • V
       • The wave velocity is determined by the properties of the medium an is independent of the other parameters.
         • Can be determined from:
           • Measurements of the frequency and wavelenght
     • Wavelength repeat distance of wave
       • λ

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