Waves

Waves

1. Ttransverse waves

   • Particles move at right angles to energy
     • Radio waves
     • Light Waves
       • Speed of light is 3x10

2. Longitudinal Waves

   • Particles vibrate in the same plane as energy
     • Soundwaves
       • Speed of sound is 340 m/s-1

3. Wave Properties

   • Wavelength is the distance between 1 point and the next same point
   • Amplitude is from center to top
   • Period of a wave, t seconds- is the time taken for one wave to pass a point
   • Frequency, Hertz(Hz)- is the number of waves that pass a point in one second
     • Frequency equals number of waves divided by time
     • The bigger the Frequency the smaller the wavelength, The bigger the wavelength the smaller the frequency
     • Speed is not affected by a change in frequency
   • Speed of a wave is called velocity(v)

4. Diffraction

   • Is the bending of waves round an object
   • The bigger the wavelength(smaller frequency) the more a wave will diffract

5. Refraction

   • When light enters a different medium, a change in speed occurs.
   • When light goes from air to glass the speed decreases

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