Waves - Physics | Mapa Mental

Progressive Waves
1. Mechanical
  1. Requires a medium to travel through (e.g. Sound, surface water waves, waves on a string, earthquake waves etc.)
2. Electromagnetic
  1. Radio waves
  2. All EM waves are transverse in nature
  3. Visible light
  4. Microwaves
3. Transverse
  1. Oscillations are perpendicular to the direction of wave propagation
  2. Examples include waves on a string, microwaves, earthquake S waves
4. Longitudinal
  1. Oscillations are parallel to the direction of wave propagation
  2. Examples include sound waves and earthquake P waves
Definitions
1. Displacement (x) of a particle is its distance and direction from its equilibrium position
2. Amplitude (A) is the maximum displacement from the equilibrium position
3. Frequency is the number of oscillations passing a point in the wave per second
4. Period (T) is the time for one whole oscillation (one cycle)
5. Phase difference is the fraction of a cycle difference between the vibrations of two particles
6. Wavelength is the least distance between adjacent which are in phase
Useful equations
1. Phase difference = (distance between two points on the wave / wavelength) x 360 (for a displacement distance graph)
2. Phase difference = (time between the two points on the wave/time period) x 360 (for a displacement-time graph)
3. Wave speed = frequency x wavelength
4. Refractive index = speed of light in a vacuum / speed of light in the medium
Refraction
1. When waves pass from low to high refractive index (n < n'), they slow down and are refracted towards the normal
2. When waves pass from high to low refractive index (n > n'), they speed up and are refracted away from the normal
3. Snell's law: n1 sin

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	Creado por Tyler Lowe hace casi 6 años