GCSE Physics (AQA)

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Refraction

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Waves Electromagnetic waves

Refraction

4:38 Refraction
Spec 4.6.2.2
Previous EM Waves & Surfaces Next Refraction & Wave Speed
  • Refraction is the effect of a wave changing direction as it travels from one medium to another.
  • Transmission is the act of a wave traveling from one medium to another.
  • Refraction occurs when transmission is at an angle.
  • Example: Light traveling from air to glass changes direction, demonstrating refraction.
  • Refraction can make objects appear in a different location than they actually are.
  • Our brains assume light travels in a single direction, not accounting for refraction.
  • Example: A coin at the bottom of a tub of water appears in a different location due to refraction.
  • Different wavelengths of electromagnetic waves refract at different angles.
  • A glass prism can demonstrate refraction by splitting white light into different colors.
  • Refraction is not limited to light waves; it can occur in other types of waves.
  • Example: Water waves in a ripple tank change direction when moving from deep to shallow water.
  • Refraction can also be observed in mechanical waves like seismic and sound waves.
  • The principle of refraction applies to any type of wave that can transmit through a boundary.

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