Refraction Flashcards

1
Q

What is refraction

A
  • When a wave changes direction as it passes from one medium to another due to a change in speed
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2
Q

What is the connection between the density of the material and the wave speed

A
  • Waves travel at different speeds in different mediums
  • The denser the material, the slower the wave
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3
Q

What is the emergent ray

A
  • The ray emerging out of the medium after refraction
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4
Q

What changes along with wave speed

A
  • As the wave speed changes in different mediums, we know that the wavelength also changes
  • Wave speed = frequency X wavelength
  • Frequency never changes
  • An increase in wave speed means an increase in wavelength
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5
Q

What happens if we pass white light through a triangular prism

A
  • White light is made up of all different coloured lights
  • Different coloured lights have different wavelengths
  • Different wavelengths means different frequencies
  • This means that different coloured lights will refract in different angles
  • All of the different coloured lights will be split up
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